Diurnal Cycle of ASCAT-Identified Cold Pools and Associated Convective Systems in the Maritime Continent and South China Sea

Nesbitt, Stephen W ; Garg, Piyush ; Lang, Timothy J ; Priftis, George ; Chronis, Themis

关键词: AIR WATER INTERACTIONS;    ALGORITHMS;    CONVECTION;    DIURNAL VARIATIONS;    HEAT FLUX;    LATENT HEAT;    LIFE (DURABILITY);    MESOSCALE PHENOMENA;    OCEANS;    PRECIPITATION MEASUREMENT;    SEA SURFACE TEMPERATURE;    SCATTEROMETERS;    SYNCHRONOUS SATELLITES;    TEMPERATURE GRADIENTS;    TROPICAL REGIONS;    WIND VELOCITY MEASUREMENT;   

RP-ID  :  MSFC-E-DAA-TN68971

学科分类：地球科学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Mesoscale convective cold pools are known to alter the turbulent air-sea fluxes in the regions of active convection such as maritime tropics. Satellite-based Ocean Vector Wind instruments have proven to be useful in observing these mesoscale outflows corresponding to convective cold pools. A new storm-centric, tensor-based wind-gradient identification algorithm identifies gradients associated with convective cold pools and other boundaries such as land-sea breeze fronts. We term these as Gradient Features or GFs; analyzed over tropical oceans (2007-2018) using horizontal winds from Advanced Scatterometer (ASCAT-A).