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... https://www.roneverhart.com/RKT-9-RDO/