The TropFlux project aims at providing daily, timely, accurate air-sea heat
and momentum flux data for the entire 30°N-30°S region.
Wind stresses and the four components of net surface heat flux are currently
available for the entire 1979 to March 2013 period.
We are currently working on a regular (~monthly) update of the
TropFlux product until 3-4 months behind realtime.
TropFlux is largely derived from a combination of
re-analysis data for turbulent and longwave fluxes, and
surface radiation data for shortwave flux.
All input products are bias- and amplitude-corrected on the basis of
Global Tropical Moored Buoy Array
data, before surface net heat flux and wind stresses are computed using the
COARE v3 bulk algorithm.
A precise description of the flux computation procedure, as well as a
detailed evaluation against other timely, daily air-sea heat flux
alternatives (OAFLUX, NCEP, NCEP2, ERA-I) is provided in
Praveen Kumar et al. 2012.
The wind stress product is described, evaluated and compared against other
widely used products (QuikSCAT, NCEP, NCEP2, ERA-I) in
Praveen Kumar et al. 2013
We believe that this product offers the following advantages:
better variability and less biases than re-analysis fluxes (and equivalent or slightly better than the best performing products: OAFLUX for heat fluxes and ERA-I for wind stresses) ,
available until August 2013, and soon updated every month, lagging realtime by ~3 months,
a simple estimate of surface shortwave radiation is provided from OLR data, as a near-realtime alternative to the more accurate but irregularly updated ISCCP data.