Publication Abstracts
Hsiao et al. 2024
Hsiao, W.-T., E.D. Maloney, , and C.D. Kummerow, 2024: Observed relationships between sea surface temperature, vertical wind shear, tropical organized deep convection, and radiative effects. J. Climate, 37, no. 4, 1277-1293, doi:10.1175/JCLI-D-23-0262.1.
Organized deep convective activity has been routinely monitored by satellite precipitation radar from the Tropical Rainfall Measuring Mission (TRMM) and Global Precipitation Mission (GPM). Organized deep convective activity is found to increase not only with sea surface temperature (SST) above 27°C, but also with low-level wind shear. Precipitation shows a similar increasing relationship with both SST and low-level wind shear, except for the highest low-level wind shear. These observations suggest that the threshold for organized deep convection and precipitation in the tropics should consider not only SST, but also vertical wind shear. The longwave cloud radiative feedback, measured as the tropospheric longwave cloud radiative heating per amount of precipitation, is found to generally increase with stronger organized deep convective activity as SST and low-level wind shear increase. Organized deep convective activity, the longwave cloud radiative feedback, and cirrus ice cloud cover per amount of precipitation also appear to be controlled more strongly by SST than by the deviation of SST from its tropical mean. This study hints at the importance of non-thermodynamic factors such as vertical wind shear for impacting tropical convective structure, cloud properties, and associated radiative energy budget of the tropics.
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BibTeX Citation
@article{hs03000d,
author={Hsiao, W.-T. and Maloney, E. D. and Leitmann-Niimi, N. M. and Kummerow, C. D.},
title={Observed relationships between sea surface temperature, vertical wind shear, tropical organized deep convection, and radiative effects},
year={2024},
journal={Journal of Climate},
volume={37},
number={4},
pages={1277--1293},
doi={10.1175/JCLI-D-23-0262.1},
}
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RIS Citation
TY - JOUR ID - hs03000d AU - Hsiao, W.-T. AU - Maloney, E. D. AU - Leitmann-Niimi, N. M. AU - Kummerow, C. D. PY - 2024 TI - Observed relationships between sea surface temperature, vertical wind shear, tropical organized deep convection, and radiative effects JA - J. Climate JO - Journal of Climate VL - 37 IS - 4 SP - 1277 EP - 1293 DO - 10.1175/JCLI-D-23-0262.1 ER -
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