---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '21013'
abstract:
- lang: eng
text: We have addressed convective self‐aggregation (CSA) in steady and oscillating
sea surface temperature (SST) and solar radiation (SOLIN) cloud‐resolving model
simulations in a non‐rotating radiative‐convective equilibrium (RCE) framework.
Our experiment designs are motivated by land‐ocean heterogeneity of atmospheric
convection. The steady and oscillating forcings are idealizations of ocean and
land conditions, respectively, based on their differences in heat capacities.
In both kinds of simulations, the diurnal mean SST and SOLIN are the same, and
both SST and SOLIN are only varied in time (i.e., they are spatially homogeneous
at any given time). We find that diurnally oscillating forcing accelerates CSA.
Stronger long‐wave cooling in dry regions at night and during the warm SST phase
(late afternoon) both allow the long‐wave feedback, known to favor aggregation,
to intensify compared to steady forcing simulations. In addition to the long‐wave,
reduced short‐wave warming in dry regions (during the day) further enhances radiative
cooling there compared to moist regions. Overall, the radiative cooling is enhanced
in dry regions compared to neighboring moist convective regions. A dry subsidence
is driven by this net radiative (short‐wave plus long‐wave) cooling, consistent
with earlier work on CSA. Stronger radiative cooling allows stronger subsidence
which allows low‐level circulation to more efficiently transport moisture and
energy up‐gradient, driving convection to aggregate faster. We also note a sensitivity
of our experimental setup to initial conditions, more so at warmer SST. This stochastic
behavior might be critical in reconciling the differences of opinion regarding
the response of convection aggregation to oscillating SST forcing.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: The authors gratefully acknowledge funding from the European Research
Council (ERC) under the European Union's Horizon 2020 research and innovation program
(Project CLUSTER, Grant Agreement No. 805041). This research was supported by the
Scientific Service Units (SSU) of ISTA through resources provided by Scientific
Computing (SciComp). We are grateful to three anonymous reviewer(s) for their insightful
suggestions that have improved the quality of our manuscript. Open Access funding
provided by Institute of Science and Technology Austria/KEMÖ.
article_number: e2024MS004576
article_processing_charge: Yes
article_type: original
author:
- first_name: BIDYUT B
full_name: GOSWAMI, BIDYUT B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: GOSWAMI
orcid: 0000-0001-8602-3083
- first_name: Ziyin
full_name: Lu, Ziyin
id: a6e549c6-8972-11ed-ae7b-a336d97ac043
last_name: Lu
orcid: 0009-0008-5320-7730
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
citation:
ama: GOSWAMI BB, Lu Z, Muller CJ. Convective self‐aggregation in diurnally oscillating
sea surface temperature and solar forcing experiments. Journal of Advances
in Modeling Earth Systems. 2026;18(1). doi:10.1029/2024ms004576
apa: GOSWAMI, B. B., Lu, Z., & Muller, C. J. (2026). Convective self‐aggregation
in diurnally oscillating sea surface temperature and solar forcing experiments.
Journal of Advances in Modeling Earth Systems. Wiley. https://doi.org/10.1029/2024ms004576
chicago: GOSWAMI, BIDYUT B, Ziyin Lu, and Caroline J Muller. “Convective Self‐aggregation
in Diurnally Oscillating Sea Surface Temperature and Solar Forcing Experiments.”
Journal of Advances in Modeling Earth Systems. Wiley, 2026. https://doi.org/10.1029/2024ms004576.
ieee: B. B. GOSWAMI, Z. Lu, and C. J. Muller, “Convective self‐aggregation in diurnally
oscillating sea surface temperature and solar forcing experiments,” Journal
of Advances in Modeling Earth Systems, vol. 18, no. 1. Wiley, 2026.
ista: GOSWAMI BB, Lu Z, Muller CJ. 2026. Convective self‐aggregation in diurnally
oscillating sea surface temperature and solar forcing experiments. Journal of
Advances in Modeling Earth Systems. 18(1), e2024MS004576.
mla: GOSWAMI, BIDYUT B., et al. “Convective Self‐aggregation in Diurnally Oscillating
Sea Surface Temperature and Solar Forcing Experiments.” Journal of Advances
in Modeling Earth Systems, vol. 18, no. 1, e2024MS004576, Wiley, 2026, doi:10.1029/2024ms004576.
short: B.B. GOSWAMI, Z. Lu, C.J. Muller, Journal of Advances in Modeling Earth Systems
18 (2026).
corr_author: '1'
date_created: 2026-01-20T10:08:54Z
date_published: 2026-01-12T00:00:00Z
date_updated: 2026-01-21T08:41:19Z
day: '12'
ddc:
- '550'
department:
- _id: CaMu
- _id: BjHo
- _id: GradSch
doi: 10.1029/2024ms004576
ec_funded: 1
file:
- access_level: open_access
checksum: 6ea369e3b46bea58efab4f38b6c671a7
content_type: application/pdf
creator: dernst
date_created: 2026-01-21T08:39:01Z
date_updated: 2026-01-21T08:39:01Z
file_id: '21027'
file_name: 2026_JAMES_Goswami.pdf
file_size: 19509786
relation: main_file
success: 1
file_date_updated: 2026-01-21T08:39:01Z
has_accepted_license: '1'
intvolume: ' 18'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 629205d8-2b32-11ec-9570-e1356ff73576
call_identifier: H2020
grant_number: '805041'
name: Organization of CLoUdS, and implications of Tropical cyclones and for the
Energetics of the tropics, in current and waRming climate
publication: Journal of Advances in Modeling Earth Systems
publication_identifier:
eissn:
- 1942-2466
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Convective self‐aggregation in diurnally oscillating sea surface temperature
and solar forcing experiments
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '20319'
abstract:
- lang: eng
text: The time needed by deep convection to bring the atmosphere back to equilibrium
is called convective adjustment timescale or simply adjustment timescale, typically
denoted by . In the Community Atmospheric Model|Community Atmosphere Model (CAM), is
the convective available potential energy (CAPE) relaxation timescale and is 1 hr,
worldwide. Observational evidence suggests that is generally longer than 1 hr.
Further, continental and oceanic convection are different in terms of the vigor
of updrafts and can have different longevities. So using hour worldwide in CAM
has two potential caveats. A longer improves the simulation of the mean climate.
However, it does not address the land‐ocean heterogeneity of atmospheric deep
convection. We investigate the prescription of two different CAPE relaxation timescales
for land ( hr) and ocean ( to 4 hr). It is arguably an extremely crude parameterization
of boundary layer control on atmospheric convection. We contrast a suite of 5‐year‐long
simulations with two different for land and ocean to having one globally. The
choice of longer over ocean is guided by previous studies and inspired by observational
pieces of evidence. Nonetheless, to complement our variable experiments, we perform
a simulation with hr and hrs. Most importantly, our key findings are immune
to the exact values of prescribed and . The CAM model, with two values , improves
convective‐stratiform rainfall partitioning and the Madden–Julian oscillation
propagation characteristics.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: The authors gratefully acknowledge funding from the European Research
Council (ERC) under the European Union's Horizon 2020 research and innovation program
(Project CLUSTER, Grant 805041). This research was supported by the Scientific Service
Units (SSU) of ISTA through resources provided by Scientific Computing (SciComp).
We would like to thank Prof. Courtney Schumacher and Dr. Aaron Funk of Texas A&M
University for their help in understanding the TRMM Radar data. The authors are
grateful to two anonymous reviewers who helped improve the quality of this paper.
article_number: e2025MS005035
article_processing_charge: Yes
article_type: original
author:
- first_name: BIDYUT B
full_name: GOSWAMI, BIDYUT B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: GOSWAMI
orcid: 0000-0001-8602-3083
- first_name: Andrea
full_name: Polesello, Andrea
id: 74c777f4-32da-11ee-b498-874db0835561
last_name: Polesello
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
citation:
ama: GOSWAMI BB, Polesello A, Muller CJ. An assessment of representing land‐ocean
heterogeneity via CAPE relaxation timescale in the Community Atmospheric Model
6 (CAM6). Journal of Advances in Modeling Earth Systems. 2025;17(9). doi:10.1029/2025ms005035
apa: GOSWAMI, B. B., Polesello, A., & Muller, C. J. (2025). An assessment of
representing land‐ocean heterogeneity via CAPE relaxation timescale in the Community
Atmospheric Model 6 (CAM6). Journal of Advances in Modeling Earth Systems.
Wiley. https://doi.org/10.1029/2025ms005035
chicago: GOSWAMI, BIDYUT B, Andrea Polesello, and Caroline J Muller. “An Assessment
of Representing Land‐ocean Heterogeneity via CAPE Relaxation Timescale in the
Community Atmospheric Model 6 (CAM6).” Journal of Advances in Modeling Earth
Systems. Wiley, 2025. https://doi.org/10.1029/2025ms005035.
ieee: B. B. GOSWAMI, A. Polesello, and C. J. Muller, “An assessment of representing
land‐ocean heterogeneity via CAPE relaxation timescale in the Community Atmospheric
Model 6 (CAM6),” Journal of Advances in Modeling Earth Systems, vol. 17,
no. 9. Wiley, 2025.
ista: GOSWAMI BB, Polesello A, Muller CJ. 2025. An assessment of representing land‐ocean
heterogeneity via CAPE relaxation timescale in the Community Atmospheric Model
6 (CAM6). Journal of Advances in Modeling Earth Systems. 17(9), e2025MS005035.
mla: GOSWAMI, BIDYUT B., et al. “An Assessment of Representing Land‐ocean Heterogeneity
via CAPE Relaxation Timescale in the Community Atmospheric Model 6 (CAM6).” Journal
of Advances in Modeling Earth Systems, vol. 17, no. 9, e2025MS005035, Wiley,
2025, doi:10.1029/2025ms005035.
short: B.B. GOSWAMI, A. Polesello, C.J. Muller, Journal of Advances in Modeling
Earth Systems 17 (2025).
corr_author: '1'
date_created: 2025-09-10T05:36:16Z
date_published: 2025-09-01T00:00:00Z
date_updated: 2025-09-10T08:14:28Z
day: '01'
ddc:
- '550'
department:
- _id: CaMu
doi: 10.1029/2025ms005035
ec_funded: 1
file:
- access_level: open_access
checksum: 5961d6290432c5ac0e8587ef07f30c9b
content_type: application/pdf
creator: dernst
date_created: 2025-09-10T08:12:34Z
date_updated: 2025-09-10T08:12:34Z
file_id: '20338'
file_name: 2025_JAMES_Goswami.pdf
file_size: 2143025
relation: main_file
success: 1
file_date_updated: 2025-09-10T08:12:34Z
has_accepted_license: '1'
intvolume: ' 17'
issue: '9'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 629205d8-2b32-11ec-9570-e1356ff73576
call_identifier: H2020
grant_number: '805041'
name: Organization of CLoUdS, and implications of Tropical cyclones and for the
Energetics of the tropics, in current and waRming climate
publication: Journal of Advances in Modeling Earth Systems
publication_identifier:
eissn:
- 1942-2466
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: An assessment of representing land‐ocean heterogeneity via CAPE relaxation
timescale in the Community Atmospheric Model 6 (CAM6)
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2025'
...
---
APC_amount: 1470 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '15165'
abstract:
- lang: eng
text: Current knowledge suggests a drought Indian monsoon (perhaps a severe one)
when the El Nino Southern Oscillation and Pacific Decadal Oscillation each exhibit
positive phases (a joint positive phase). For the monsoons, which are exceptions
in this regard, we found northeast India often gets excess pre-monsoon rainfall.
Further investigation reveals that this excess pre-monsoon rainfall is produced
by the interaction of the large-scale circulation associated with the joint phase
with the mountains in northeast India. We posit that a warmer troposphere, a consequence
of excess rainfall over northeast India, drives a stronger monsoon circulation
and enhances monsoon rainfall over central India. Hence, we argue that pre-monsoon
rainfall over northeast India can be used for seasonal monsoon rainfall prediction
over central India. Most importantly, its predictive value is at its peak when
the Pacific Ocean exhibits a joint positive phase and the threat of extreme drought
monsoon looms over India.
acknowledgement: The author gratefully acknowledges ISTA for supporting this research
through funding from the European Research Council (ERC) under the European Union’s
Horizon 2020 research and innovation programme (Project CLUSTER, grant agreement
No. 805041).
article_number: e2023GL106569
article_processing_charge: Yes
article_type: original
author:
- first_name: Bidyut B
full_name: Goswami, Bidyut B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: Goswami
orcid: 0000-0001-8602-3083
citation:
ama: GOSWAMI BB. A pre-monsoon signal of false alarms of Indian monsoon droughts.
Geophysical Research Letters. 2024;51(5). doi:10.1029/2023GL106569
apa: GOSWAMI, B. B. (2024). A pre-monsoon signal of false alarms of Indian monsoon
droughts. Geophysical Research Letters. Wiley. https://doi.org/10.1029/2023GL106569
chicago: GOSWAMI, BIDYUT B. “A Pre-Monsoon Signal of False Alarms of Indian Monsoon
Droughts.” Geophysical Research Letters. Wiley, 2024. https://doi.org/10.1029/2023GL106569.
ieee: B. B. GOSWAMI, “A pre-monsoon signal of false alarms of Indian monsoon droughts,”
Geophysical Research Letters, vol. 51, no. 5. Wiley, 2024.
ista: GOSWAMI BB. 2024. A pre-monsoon signal of false alarms of Indian monsoon droughts.
Geophysical Research Letters. 51(5), e2023GL106569.
mla: GOSWAMI, BIDYUT B. “A Pre-Monsoon Signal of False Alarms of Indian Monsoon
Droughts.” Geophysical Research Letters, vol. 51, no. 5, e2023GL106569,
Wiley, 2024, doi:10.1029/2023GL106569.
short: B.B. GOSWAMI, Geophysical Research Letters 51 (2024).
corr_author: '1'
date_created: 2024-03-24T23:00:58Z
date_published: 2024-03-16T00:00:00Z
date_updated: 2025-09-04T13:11:41Z
day: '16'
ddc:
- '550'
department:
- _id: CaMu
doi: 10.1029/2023GL106569
ec_funded: 1
external_id:
isi:
- '001181635700001'
file:
- access_level: open_access
checksum: 243bd966aca968ec7d9e474af8639f8d
content_type: application/pdf
creator: dernst
date_created: 2024-03-25T08:36:00Z
date_updated: 2024-03-25T08:36:00Z
file_id: '15178'
file_name: 2024_GeophysResLetters_Goswami.pdf
file_size: 2887134
relation: main_file
success: 1
file_date_updated: 2024-03-25T08:36:00Z
has_accepted_license: '1'
intvolume: ' 51'
isi: 1
issue: '5'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 629205d8-2b32-11ec-9570-e1356ff73576
call_identifier: H2020
grant_number: '805041'
name: Organization of CLoUdS, and implications of Tropical cyclones and for the
Energetics of the tropics, in current and waRming climate
publication: Geophysical Research Letters
publication_identifier:
eissn:
- 1944-8007
issn:
- 0094-8276
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: A pre-monsoon signal of false alarms of Indian monsoon droughts
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 51
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18708'
abstract:
- lang: eng
text: This study investigates the response of Indian summer monsoon (ISM) precipitation
to CO2 removal, with a specific focus on regional and subseasonal variations.
Following CO2 removal, monsoon circulation weakens throughout the summer owing
to the reduced large-scale meridional temperature gradient around India. Weakened
monsoon circulation decreases the local-scale thermodynamic stability within India,
following monsoon-onset periods. While the frequency of synoptic-scale ISM low-pressure
systems (LPSs) decreases overall, the lower thermodynamic stability causes the
LPSs to form and resultantly shift west and south from their typical paths, last
longer and move more quickly zonally during August and September. Changes in these
rain-producing processes induce distinct regional (Western Ghats, south-central-east
India, and Tamil Nadu) and subseasonal precipitation responses. Also, extreme
precipitation exhibits similar patterns, but is more strongly affected by changes
in LPS. Our results suggest that reliable future projections of regional hydroclimate
change require a more accurate understanding of multi-scale precipitation processes.
acknowledgement: This study was supported by the National Research Foundation of Korea
(NRF) grant funded by the Korean government (MSIT) (NRF-2018R1A5A1024958, NRF-2021R1C1C2094185,
RS-2024-00336160). Model simulation and data transfer were supported by the National
Supercomputing Center with supercomputing resources including technical support
(KSC-2021-CHA-0030), the National Center for Meteorological Supercomputer of the
Korea Meteorological Administration (KMA), and by the Korea Research Environment
Open NETwork (KREONET), respectively. DK was supported by New Faculty Startup Fund
from Seoul National University. We acknowledge the World Climate Research Programme,
which, through its Working Group on Coupled Modelling, coordinated and promoted
CMIP6. We thank the climate modeling groups for producing and making available their
model output, the Earth System Grid Federation (ESGF) for archiving the data and
providing access (https://esgf-node.llnl.gov/projects/cmip6/), and the multiple
funding agencies who support CMIP6 and ESGF.
article_number: '305'
article_processing_charge: Yes
article_type: original
author:
- first_name: Seungmok
full_name: Paik, Seungmok
last_name: Paik
- first_name: Daehyun
full_name: Kim, Daehyun
last_name: Kim
- first_name: Soon Il
full_name: An, Soon Il
last_name: An
- first_name: Hyoeun
full_name: Oh, Hyoeun
last_name: Oh
- first_name: Jongsoo
full_name: Shin, Jongsoo
last_name: Shin
- first_name: Bidyut B
full_name: Goswami, Bidyut B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: Goswami
orcid: 0000-0001-8602-3083
- first_name: Seung Ki
full_name: Min, Seung Ki
last_name: Min
- first_name: Sanjit Kumar
full_name: Mondal, Sanjit Kumar
last_name: Mondal
citation:
ama: Paik S, Kim D, An SI, et al. Exploring causes of distinct regional and subseasonal
Indian summer monsoon precipitation responses to CO2 removal. npj Climate and
Atmospheric Science. 2024;7. doi:10.1038/s41612-024-00858-0
apa: Paik, S., Kim, D., An, S. I., Oh, H., Shin, J., GOSWAMI, B. B., … Mondal, S.
K. (2024). Exploring causes of distinct regional and subseasonal Indian summer
monsoon precipitation responses to CO2 removal. Npj Climate and Atmospheric
Science. Springer Nature. https://doi.org/10.1038/s41612-024-00858-0
chicago: Paik, Seungmok, Daehyun Kim, Soon Il An, Hyoeun Oh, Jongsoo Shin, BIDYUT
B GOSWAMI, Seung Ki Min, and Sanjit Kumar Mondal. “Exploring Causes of Distinct
Regional and Subseasonal Indian Summer Monsoon Precipitation Responses to CO2
Removal.” Npj Climate and Atmospheric Science. Springer Nature, 2024. https://doi.org/10.1038/s41612-024-00858-0.
ieee: S. Paik et al., “Exploring causes of distinct regional and subseasonal
Indian summer monsoon precipitation responses to CO2 removal,” npj Climate
and Atmospheric Science, vol. 7. Springer Nature, 2024.
ista: Paik S, Kim D, An SI, Oh H, Shin J, GOSWAMI BB, Min SK, Mondal SK. 2024. Exploring
causes of distinct regional and subseasonal Indian summer monsoon precipitation
responses to CO2 removal. npj Climate and Atmospheric Science. 7, 305.
mla: Paik, Seungmok, et al. “Exploring Causes of Distinct Regional and Subseasonal
Indian Summer Monsoon Precipitation Responses to CO2 Removal.” Npj Climate
and Atmospheric Science, vol. 7, 305, Springer Nature, 2024, doi:10.1038/s41612-024-00858-0.
short: S. Paik, D. Kim, S.I. An, H. Oh, J. Shin, B.B. GOSWAMI, S.K. Min, S.K. Mondal,
Npj Climate and Atmospheric Science 7 (2024).
date_created: 2024-12-29T23:01:57Z
date_published: 2024-12-19T00:00:00Z
date_updated: 2025-09-09T11:51:56Z
day: '19'
ddc:
- '550'
department:
- _id: CaMu
doi: 10.1038/s41612-024-00858-0
external_id:
isi:
- '001381218300007'
file:
- access_level: open_access
checksum: 6b3148315a444835113c32b399010370
content_type: application/pdf
creator: dernst
date_created: 2025-01-02T08:49:13Z
date_updated: 2025-01-02T08:49:13Z
file_id: '18717'
file_name: 2024_npjclimate_Paik.pdf
file_size: 1927871
relation: main_file
success: 1
file_date_updated: 2025-01-02T08:49:13Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: npj Climate and Atmospheric Science
publication_identifier:
eissn:
- 2397-3722
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exploring causes of distinct regional and subseasonal Indian summer monsoon
precipitation responses to CO2 removal
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 7
year: '2024'
...
---
_id: '11434'
abstract:
- lang: eng
text: The Indian summer monsoon rainfall (ISMR) has been declining since the 1950s.
However, since 2002 it is reported to have revived. For these observed changes
in the ISMR, several explanations have been reported. Among these explanations,
however, the role of the eastern equatorial Indian Ocean (EEIO) is missing despite
being one of the warmest regions in the Indian Ocean, and monotonously warming.
A recent study reported that EEIO warming impacts the rainfall over northern India.
Here we report that warming in the EEIO weakens the low-level Indian summer monsoon
circulation and reduces ISMR. A warm EEIO drives easterly winds in the Indo–Pacific
sector as a Gill response. The warm EEIO also enhances nocturnal convection offshore
the western coast of Sumatra. The latent heating associated with the increased
convection augments the Gill response and the resultant circulation opposes the
monsoon low-level circulation and weakens the seasonal rainfall.
acknowledgement: This work was supported by the National Research Foundation of Korea
(NRF) grant funded by the Korea government (MSIT) (NRF-2018R1A5A1024958). Model
simulation and data transfer were supported by the National Supercomputing Center
with supercomputing resources including technical support (KSC-2019-CHA-0005), the
National Center for Meteorological Supercomputer of Korea Meteorological Administration,
and by the Korea Research Environment Open NETwork (KREONET), respectively. The
authors declare no conflicts of interest.
article_processing_charge: No
article_type: original
author:
- first_name: Bidyut B
full_name: Goswami, Bidyut B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: Goswami
orcid: 0000-0001-8602-3083
citation:
ama: GOSWAMI BB. Role of the eastern equatorial Indian Ocean warming in the Indian
summer monsoon rainfall trend. Climate Dynamics. 2023;60:427-442. doi:10.1007/s00382-022-06337-7
apa: GOSWAMI, B. B. (2023). Role of the eastern equatorial Indian Ocean warming
in the Indian summer monsoon rainfall trend. Climate Dynamics. Springer
Nature. https://doi.org/10.1007/s00382-022-06337-7
chicago: GOSWAMI, BIDYUT B. “Role of the Eastern Equatorial Indian Ocean Warming
in the Indian Summer Monsoon Rainfall Trend.” Climate Dynamics. Springer
Nature, 2023. https://doi.org/10.1007/s00382-022-06337-7.
ieee: B. B. GOSWAMI, “Role of the eastern equatorial Indian Ocean warming in the
Indian summer monsoon rainfall trend,” Climate Dynamics, vol. 60. Springer
Nature, pp. 427–442, 2023.
ista: GOSWAMI BB. 2023. Role of the eastern equatorial Indian Ocean warming in the
Indian summer monsoon rainfall trend. Climate Dynamics. 60, 427–442.
mla: GOSWAMI, BIDYUT B. “Role of the Eastern Equatorial Indian Ocean Warming in
the Indian Summer Monsoon Rainfall Trend.” Climate Dynamics, vol. 60, Springer
Nature, 2023, pp. 427–42, doi:10.1007/s00382-022-06337-7.
short: B.B. GOSWAMI, Climate Dynamics 60 (2023) 427–442.
corr_author: '1'
date_created: 2022-06-05T22:01:50Z
date_published: 2023-01-01T00:00:00Z
date_updated: 2024-10-09T20:53:52Z
day: '01'
department:
- _id: CaMu
doi: 10.1007/s00382-022-06337-7
external_id:
isi:
- '000803119400002'
intvolume: ' 60'
isi: 1
language:
- iso: eng
month: '01'
oa_version: None
page: 427-442
publication: Climate Dynamics
publication_identifier:
eissn:
- 1432-0894
issn:
- 0930-7575
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: ' https://doi.org/10.1007/s00382-022-06401-2'
scopus_import: '1'
status: public
title: Role of the eastern equatorial Indian Ocean warming in the Indian summer monsoon
rainfall trend
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 60
year: '2023'
...
---
_id: '13256'
abstract:
- lang: eng
text: The El Niño-Southern Oscillation (ENSO) and the Indian summer monsoon (ISM,
or monsoon) are two giants of tropical climate. Here we assess the future evolution
of the ENSO-monsoon teleconnection in climate simulations with idealized forcing
of CO2 increment at a rate of 1% year-1 starting from a present-day condition
(367 p.p.m.) until quadrupling. We find a monotonous weakening of the ENSO-monsoon
teleconnection with the increase in CO2. Increased co-occurrences of El Niño and
positive Indian Ocean Dipoles (pIODs) in a warmer climate weaken the teleconnection.
Co-occurrences of El Niño and pIOD are attributable to mean sea surface temperature
(SST) warming that resembles a pIOD-type warming pattern in the Indian Ocean and
an El Niño-type warming in the Pacific. Since ENSO is a critical precursor of
the strength of the Indian monsoon, a weakening of this relation may mean a less
predictable Indian monsoon in a warmer climate.
acknowledgement: This work was supported by National Research Foundation of Korea
(NRF) grants funded by the Korean government (MSIT) (NRF-2018R1A5A1024958, RS-2023-00208000).
Model simulation and data transfer were supported by the National Supercomputing
Center with supercomputing resources including technical support (KSC-2019-CHA-0005),
the National Center for Meteorological Supercomputer of the Korea Meteorological
Administration (KMA), and by the Korea Research Environment Open NETwork (KREONET),
respectively. We sincerely thank Dr. Jongsoo Shin of Pohang University of Science
and Technology, Pohang, South Korea for the model simulations.
article_number: '82'
article_processing_charge: Yes
article_type: original
author:
- first_name: Bidyut B
full_name: Goswami, Bidyut B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: Goswami
- first_name: Soon Il
full_name: An, Soon Il
last_name: An
citation:
ama: GOSWAMI BB, An SI. An assessment of the ENSO-monsoon teleconnection in a warming
climate. npj Climate and Atmospheric Science. 2023;6. doi:10.1038/s41612-023-00411-5
apa: GOSWAMI, B. B., & An, S. I. (2023). An assessment of the ENSO-monsoon teleconnection
in a warming climate. Npj Climate and Atmospheric Science. Springer Nature.
https://doi.org/10.1038/s41612-023-00411-5
chicago: GOSWAMI, BIDYUT B, and Soon Il An. “An Assessment of the ENSO-Monsoon Teleconnection
in a Warming Climate.” Npj Climate and Atmospheric Science. Springer Nature,
2023. https://doi.org/10.1038/s41612-023-00411-5.
ieee: B. B. GOSWAMI and S. I. An, “An assessment of the ENSO-monsoon teleconnection
in a warming climate,” npj Climate and Atmospheric Science, vol. 6. Springer
Nature, 2023.
ista: GOSWAMI BB, An SI. 2023. An assessment of the ENSO-monsoon teleconnection
in a warming climate. npj Climate and Atmospheric Science. 6, 82.
mla: GOSWAMI, BIDYUT B., and Soon Il An. “An Assessment of the ENSO-Monsoon Teleconnection
in a Warming Climate.” Npj Climate and Atmospheric Science, vol. 6, 82,
Springer Nature, 2023, doi:10.1038/s41612-023-00411-5.
short: B.B. GOSWAMI, S.I. An, Npj Climate and Atmospheric Science 6 (2023).
date_created: 2023-07-23T22:01:10Z
date_published: 2023-07-08T00:00:00Z
date_updated: 2023-08-02T06:38:07Z
day: '08'
ddc:
- '550'
department:
- _id: CaMu
doi: 10.1038/s41612-023-00411-5
external_id:
isi:
- '001024920300002'
file:
- access_level: open_access
checksum: e9967d436a83b8ffcc6f58782e1f7500
content_type: application/pdf
creator: dernst
date_created: 2023-07-31T08:00:01Z
date_updated: 2023-07-31T08:00:01Z
file_id: '13326'
file_name: 2023_npjclimate_Goswami.pdf
file_size: 1750712
relation: main_file
success: 1
file_date_updated: 2023-07-31T08:00:01Z
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: npj Climate and Atmospheric Science
publication_identifier:
eissn:
- 2397-3722
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: An assessment of the ENSO-monsoon teleconnection in a warming climate
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 6
year: '2023'
...
---
_id: '14564'
abstract:
- lang: eng
text: Cumulus parameterization (CP) in state‐of‐the‐art global climate models is
based on the quasi‐equilibrium assumption (QEA), which views convection as the
action of an ensemble of cumulus clouds, in a state of equilibrium with respect
to a slowly varying atmospheric state. This view is not compatible with the organization
and dynamical interactions across multiple scales of cloud systems in the tropics
and progress in this research area was slow over decades despite the widely recognized
major shortcomings. Novel ideas on how to represent key physical processes of
moist convection‐large‐scale interaction to overcome the QEA have surged recently.
The stochastic multicloud model (SMCM) CP in particular mimics the dynamical interactions
of multiple cloud types that characterize organized tropical convection. Here,
the SMCM is used to modify the Zhang‐McFarlane (ZM) CP by changing the way in
which the bulk mass flux and bulk entrainment and detrainment rates are calculated.
This is done by introducing a stochastic ensemble of plumes characterized by randomly
varying detrainment level distributions based on the cloud area fraction of the
SMCM. The SMCM is here extended to include shallow cumulus clouds resulting in
a unified shallow‐deep CP. The new stochastic multicloud plume CP is validated
against the control ZM scheme in the context of the single column Community Climate
Model of the National Center for Atmospheric Research using data from both tropical
ocean and midlatitude land convection. Some key features of the SMCM CP such as
it capability to represent the tri‐modal nature of organized convection are emphasized.
acknowledgement: The research of B.K. is supported in part by a Discovery Grant from
the Natural Sciences and Engineering Research Council of Canada (RGPIN-04246-2020).
This research was conducted during the visits of P.M. Krishna to the Center for
Prototype Climate Models at NYU Abu Dhabi and University of Victoria from November
2018 to June 2019 and July 2019 and October 2019, respectively. The authors are
very grateful to the three anonymous reviewers who provided very thoughtful and
constructive comments during the review process that helped greatly improve and
shape the final version of the manuscript.
article_number: e2022MS003391
article_processing_charge: Yes
article_type: original
author:
- first_name: B.
full_name: Khouider, B.
last_name: Khouider
- first_name: BIDYUT B
full_name: GOSWAMI, BIDYUT B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: GOSWAMI
orcid: 0000-0001-8602-3083
- first_name: R.
full_name: Phani, R.
last_name: Phani
- first_name: A. J.
full_name: Majda, A. J.
last_name: Majda
citation:
ama: Khouider B, GOSWAMI BB, Phani R, Majda AJ. A shallow‐deep unified stochastic
mass flux cumulus parameterization in the single column community climate model.
Journal of Advances in Modeling Earth Systems. 2023;15(11). doi:10.1029/2022ms003391
apa: Khouider, B., GOSWAMI, B. B., Phani, R., & Majda, A. J. (2023). A shallow‐deep
unified stochastic mass flux cumulus parameterization in the single column community
climate model. Journal of Advances in Modeling Earth Systems. American
Geophysical Union. https://doi.org/10.1029/2022ms003391
chicago: Khouider, B., BIDYUT B GOSWAMI, R. Phani, and A. J. Majda. “A Shallow‐deep
Unified Stochastic Mass Flux Cumulus Parameterization in the Single Column Community
Climate Model.” Journal of Advances in Modeling Earth Systems. American
Geophysical Union, 2023. https://doi.org/10.1029/2022ms003391.
ieee: B. Khouider, B. B. GOSWAMI, R. Phani, and A. J. Majda, “A shallow‐deep unified
stochastic mass flux cumulus parameterization in the single column community climate
model,” Journal of Advances in Modeling Earth Systems, vol. 15, no. 11.
American Geophysical Union, 2023.
ista: Khouider B, GOSWAMI BB, Phani R, Majda AJ. 2023. A shallow‐deep unified stochastic
mass flux cumulus parameterization in the single column community climate model.
Journal of Advances in Modeling Earth Systems. 15(11), e2022MS003391.
mla: Khouider, B., et al. “A Shallow‐deep Unified Stochastic Mass Flux Cumulus Parameterization
in the Single Column Community Climate Model.” Journal of Advances in Modeling
Earth Systems, vol. 15, no. 11, e2022MS003391, American Geophysical Union,
2023, doi:10.1029/2022ms003391.
short: B. Khouider, B.B. GOSWAMI, R. Phani, A.J. Majda, Journal of Advances in Modeling
Earth Systems 15 (2023).
date_created: 2023-11-20T09:18:21Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2025-09-09T13:29:45Z
day: '01'
ddc:
- '550'
department:
- _id: CaMu
doi: 10.1029/2022ms003391
external_id:
isi:
- '001106311000001'
file:
- access_level: open_access
checksum: e30329dd985559de0ddc7021ca7382b4
content_type: application/pdf
creator: dernst
date_created: 2023-11-20T11:29:16Z
date_updated: 2023-11-20T11:29:16Z
file_id: '14582'
file_name: 2023_JAMES_Khoulder.pdf
file_size: 6435697
relation: main_file
success: 1
file_date_updated: 2023-11-20T11:29:16Z
has_accepted_license: '1'
intvolume: ' 15'
isi: 1
issue: '11'
keyword:
- General Earth and Planetary Sciences
- Environmental Chemistry
- Global and Planetary Change
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
publication: Journal of Advances in Modeling Earth Systems
publication_identifier:
eissn:
- 1942-2466
publication_status: published
publisher: American Geophysical Union
quality_controlled: '1'
scopus_import: '1'
status: public
title: A shallow‐deep unified stochastic mass flux cumulus parameterization in the
single column community climate model
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
short: CC BY-NC (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 15
year: '2023'
...
---
_id: '12007'
abstract:
- lang: eng
text: The Tibetan plateau (TP) plays an important role in the Asian summer monsoon
(ASM) dynamics as a heat source during the pre-monsoon and monsoon seasons. A
significant contribution to the pre-monsoon TP heating comes from the sensible
heat flux (SHF), which depend on the surface properties. A glaciated surface would
have a different SHF compared to a non-glaciated surface. Therefore, the TP glaciers
potentially can also impact the hydrological cycle in the Asian continent by impacting
the ASM rainfall via its contribution to the total plateau heating. However, there
is no assessment of this putative link available. Here, we attempt to qualitatively
study the role of TP glaciers on ASM by analyzing the sensitivity of an atmospheric
model to the absence of TP glaciers. We find that the absence of the glaciers
is most felt in climatologically less snowy regions (which are mostly located
at the south-central boundary of the TP during the pre-monsoon season), which
leads to positive SHF anomalies. The resulting positive diabatic heating leads
to rising air in the eastern TP and sinking air in the western TP. This altered
circulation in turn leads to a positive SHF memory in the western TP, which persists
until the end of the monsoon season. The impact of SHF anomalies on diabatic heating
results in a large-scale subsidence over the ASM domain. The net result is a reduced
seasonal ASM rainfall. Given the relentless warming and the vulnerability of glaciers
to warming, this is another flag in the ASM variability and change that needs
further attention.
acknowledgement: This research is funded by the IRCC research funding.
article_number: '29'
article_processing_charge: No
article_type: original
author:
- first_name: BIDYUT B
full_name: GOSWAMI, BIDYUT B
id: 3a4ac09c-6d61-11ec-bf66-884cde66b64b
last_name: GOSWAMI
- first_name: Soon-Il
full_name: An, Soon-Il
last_name: An
- first_name: Raghu
full_name: Murtugudde, Raghu
last_name: Murtugudde
citation:
ama: GOSWAMI BB, An S-I, Murtugudde R. Role of the Tibetan plateau glaciers in the
Asian summer monsoon. Climatic Change. 2022;173(3-4). doi:10.1007/s10584-022-03426-8
apa: GOSWAMI, B. B., An, S.-I., & Murtugudde, R. (2022). Role of the Tibetan
plateau glaciers in the Asian summer monsoon. Climatic Change. Springer
Nature. https://doi.org/10.1007/s10584-022-03426-8
chicago: GOSWAMI, BIDYUT B, Soon-Il An, and Raghu Murtugudde. “Role of the Tibetan
Plateau Glaciers in the Asian Summer Monsoon.” Climatic Change. Springer
Nature, 2022. https://doi.org/10.1007/s10584-022-03426-8.
ieee: B. B. GOSWAMI, S.-I. An, and R. Murtugudde, “Role of the Tibetan plateau glaciers
in the Asian summer monsoon,” Climatic Change, vol. 173, no. 3–4. Springer
Nature, 2022.
ista: GOSWAMI BB, An S-I, Murtugudde R. 2022. Role of the Tibetan plateau glaciers
in the Asian summer monsoon. Climatic Change. 173(3–4), 29.
mla: GOSWAMI, BIDYUT B., et al. “Role of the Tibetan Plateau Glaciers in the Asian
Summer Monsoon.” Climatic Change, vol. 173, no. 3–4, 29, Springer Nature,
2022, doi:10.1007/s10584-022-03426-8.
short: B.B. GOSWAMI, S.-I. An, R. Murtugudde, Climatic Change 173 (2022).
date_created: 2022-09-03T07:24:13Z
date_published: 2022-08-30T00:00:00Z
date_updated: 2022-09-05T08:33:33Z
day: '30'
ddc:
- '550'
doi: 10.1007/s10584-022-03426-8
extern: '1'
file:
- access_level: open_access
checksum: 38071d5c142bb76f8c8665dc374838a8
content_type: application/pdf
creator: dernst
date_created: 2022-09-05T08:29:27Z
date_updated: 2022-09-05T08:29:27Z
file_id: '12021'
file_name: 2022_ClimateChange_Goswami.pdf
file_size: 1350575
relation: main_file
success: 1
file_date_updated: 2022-09-05T08:29:27Z
has_accepted_license: '1'
intvolume: ' 173'
issue: 3-4
keyword:
- Atmospheric Science
- Global and Planetary Change
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: Climatic Change
publication_identifier:
issn:
- 0165-0009
- 1573-1480
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Role of the Tibetan plateau glaciers in the Asian summer monsoon
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 173
year: '2022'
...