On the Importance of Precipitation‐Induced Surface Sensible Heat Flux for Diurnal Cycle of Precipitation in the Maritime Continent

Zhou, Xin; Ray, Pallav; Dudhia, Jimy; Tewari, Mukul; Nikolopoulos, Efthymios; Johnson, Nathaniel C.; Hagos, Samson

doi:10.1029/2024gl111940

i

On the Importance of Precipitation‐Induced Surface Sensible Heat Flux for Diurnal Cycle of Precipitation in the Maritime Continent

2024
By Zhou, Xin ; Ray, Pallav ; Dudhia, Jimy ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Zhou, Xin ; Ray, Pallav ; Dudhia, Jimy ; Tewari, Mukul ; Nikolopoulos, Efthymios ; Johnson, Nathaniel C. ; Hagos, Samson
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)
Description:

The Maritime Continent (MC) exhibits a pronounced diurnal cycle in precipitation, with many high‐resolution models overestimating the diurnal peak and predicting earlier precipitation over the islands than observed. We hypothesize that part of this model bias comes from ignoring precipitation‐induced surface sensible heat flux (QP). To test this conjecture, we performed simulations with and without QP for April 2009 and June 2006. The inclusion of QP reduced the bias in diurnal peak precipitation amplitude by 83% in April 2009 and 23% in June 2006. Similarly, the bias in precipitation peak timing decreased by 26% and 15%, respectively. This bias reduction was even more prominent during periods of heavier rainfall. This improvement in both the amplitude and phase of diurnal precipitation also led to a reduction in bias for total precipitation by ∼10%. These findings suggest that QP cannot be neglected over the MC, particularly during heavy precipitation.
Source:

Geophysical Research Letters, 51(22)
DOI:

https://doi.org/10.1029/2024gl111940
ISSN:

0094-8276 ; 1944-8007
Format:

pdf
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA22OAR4310612
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
Rights Information:

CC BY-NC-ND
Compliance:

Library
Main Document Checksum:

urn:sha-512:bb79e1a866eddf2a061352fbd5c8cfea10d25cf7d5175e67248f8cdbaf35d7c34b9a37f4bfc6172f3bd6d37d5ad492ee03d88a88952c301f228688588bcbe9c0
Download URL:

https://repository.library.noaa.gov/view/noaa/67956/noaa_67956_DS1.pdf
File Type:

[PDF - 2.87 MB ]

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