TropFlux: air-sea fluxes for the global tropical oceans—description and evaluation

摘要: In this paper, we evaluate several timely, daily air-sea heat flux products (NCEP, NCEP2, ERA-Interim and OAFlux/ISCCP) against observations present the newly developed TropFlux product. This new product uses bias-corrected ERA-interim ISCCP data as input parameters to compute fluxes from COARE v3.0 algorithm. Wind speed is corrected for mesoscale gustiness. Surface net shortwave radiation based on data. We extend time series by using ''near real-time'' SWR estimated outgoing longwave radiation. All reproduce con- sistent intraseasonal surface variations asso- ciated with Madden-Julian Oscillation in Indian Ocean, but display more disparate interannual associated El Nino eastern Pacific. They also exhibit marked differences mean values seasonal cycle. Comparison global tropical moored buoy array data, I-COADS fully independent mooring sets shows that two NCEP lowest correlation turbulent significant bia- ses. captures well temporal variability, biases. OAFlux perform best. have issues reproducing observed Shortwave much better captured than any of re-analyses. Our performs most re-analyses, tends underestimate variability over cold tongues Atlantic Compared NCEP2 *0.78 (65 W m -2 rms-difference, ERA-I (*0.86 *48 ) while best (*0.9 *43 ). hence provides a useful option