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AbstractSensible heat flux is a turbulent flux driving interactions between the Earth’s surface and the atmosphere, propelling local and regional climate. While turbulent fluxes are measured in-situ, global scales require estimates at larger spatial scales which can be made using remotely-sensed satellite data. This study uses a first-order approximation to calculate the un-constrained hourly, terrestrial, 0.5°-resolution sensible heat flux using a land surface temperature consistent with the High-Resolution Infrared Radiation Sounder (HIRS) retrievals, six reanalysis-based air temperature products, and a dataset of Zilitinkevich empirical constant (Czil) values. This sensible heat flux dataset is constrained using the daily Bowen ratio and available energy to produce nine constrained, daily products. All resulting global, terrestrial averages are within the uncertainty range of +/- 6.3 W/m2 from the 38.8 W/m2 global annual average previously reported in the literature. The product constrained with the ne...

Development and Validation of a Long-Term, Global, Terrestrial Sensible Heat Flux Dataset