[1] In the context of climate feedback associated with temperature change, there exist two potential mechanisms that affect the outgoing longwave radiation (OLR) and the downward longwave radiation (DLR). One is the ‘‘Planck’’ effect that determines the blackbody thermal emission at a considered temperature. The other is the ‘‘absorptivity’’ effect, in which a temperature change causes a change...

Atmospheric downward longwave radiation (DLR) is a key component of the surface energy budget in Earth system. Satellite retrievals and atmospheric reanalysis estimates are two typical approaches to obtaining spatio-temporally continuous DLR product. In this study, we evaluated product from latest ERA5 well-known Clouds Earth's Radiant Energy System (CERES) satellite retrievals, against high-qu...

To elucidate physical processes responsible for the response of U.S. surface temperatures to El Niño– Southern Oscillation (ENSO), the surface energy balance is diagnosed from observations, with emphasis on the role of clouds, water vapor, and land surface properties associated with snow cover and soil moisture. Results for the winter season (December–February) indicate that U.S. surface temper...

The radiation budget in polar regions plays an important role global climate change study. This study investigates the performance of downward longwave (DLR) three satellite products regions, including GEWEX-SRB, ISCCP-FD, and CERES-SYN. RMSEs are 35.8, 40.5, 26.9 W/m2 at all sites for results Arctic much better than those Antarctic, 34.7 W/m2, 36.0 26.2 38.8 54.8 28.6 Antarctic. Both GEWEX-SRB...

[1] The Tibetan Plateau has warmed most rapidly during the winter months in the latter half of the 20th century. Changes in surface specific humidity and their effect on changes in downward longwave radiation (DLR) at the surface are examined to evaluate the pattern of seasonal warming at different elevations over the plateau between 1961 and 2000. We use observed seasonal changes in specific h...

We have studied the spatial and temporal variation of the surface longwave radiation (downwelling and net) over a 21-year period in the tropical and subtropical Pacific Ocean (40 S–40 N, 90 E-75 W). The fluxes were computed using a deterministic model for atmospheric radiation transfer, along with satellite data from the ISCCP-D2 database and reanalysis data from NCEP/NCAR (acronyms explained i...

[1] Several studies have suggested enhanced rates of warming in high-elevation regions since the latter half of the twentieth century. One of the potential reasons why enhanced rates of warming might occur at high elevations is the nonlinear relationship between downward longwave radiation (DLR) and specific humidity (q). Using ground-based observations at a high-elevation site in southwestern ...

Earth surface longwave radiation (SLR), including downward (DLR), upward (ULR), and net (NLR), significantly impacts the budget global climate evolution. However, spatiotemporal variation in SLR remains poorly understood. In this study, three satellite products (GLASS-MODIS V40, GLASS-AVHRR, CERES-SYN) reanalysis datasets (ERA5, MERRA-2, GLDAS) were validated using ground measurements from 288 ...