Exploring CYGNSS mission for surface heat flux estimates and analysis over tropical oceans

The Cyclone Global Navigation Satellite System (CYGNSS) mission can measure sea surface wind over tropical oceans with unprecedented temporal resolution and spatial coverage, so as to estimate latent sensible heat fluxes (LHF SHF). In this paper, the satellite-derived LHF/SHF estimates from CYGNSS are quantitatively evaluated analyzed by those Tropical Moored Buoy. Comparisons of LHF SHF demonstrate good performance reliability flux products during period 2017–2022, including Level 2 Ocean Surface Heat Flux Climate Data Record (CDR) Version 1.0 1.1. Different characteristics in separately based on each buoy array, suggesting better agreement Atlantic for products. Based Coupled Ocean-Atmosphere Response Experiment 3.5 algorithm, impact speed is using Science V3.1 NOAA V1.2 science results show that directly affects accuracy products, an improvement 17% root-mean-square error CDR V1.0. Especially, Indian Ocean, be improved 26.8%. This paper demonstrates along orbit important supplement situ observational data will benefit study global climate change.