Total Water Vapour from AMSU-B

Total Water Vapour (TWV) derived from AMSU-B channel 17-20 brightness temperatures using the algorithm presented at PM2 and MTR.

Format

Flat ASCII file (PC, Linux), containing triples of numbers: each triple (longitude, latitude, TWV) corresponds to one footprint (one pixel or data point) of AMSU-B. The files can be read as binary table with routines from the GMT (General Mapping Tools) package (e.g. routine 'nearneighbor').

If you have the GMT package on your system: to produce a TWV map from one of the files, use something like this shell script (please adapt). There is also a GMT color table that the script needs twv-NCEP-05.cpt

Download

• 1 Jan, 2001:

  NSS.AMBX.NK.D01001.S0001.E0135.B1370102.GC-twv.asc   
  NSS.AMBX.NK.D01001.S1515.E1709.B1371011.GC-twv.asc 
  NSS.AMBX.NK.D01001.S0131.E0317.B1370203.GC-twv.asc   
  NSS.AMBX.NK.D01001.S1705.E1840.B1371112.GC-twv.asc  
  NSS.AMBX.NK.D01001.S0312.E0457.B1370304.GC-twv.asc   
  NSS.AMBX.NK.D01001.S1835.E2020.B1371213.GC-twv.asc  
  NSS.AMBX.NK.D01001.S0453.E0640.B1370405.GC-twv.asc   
  NSS.AMBX.NK.D01001.S2015.E2209.B1371314.WI-twv.asc  
  NSS.AMBX.NK.D01001.S0636.E0829.B1370506.WI-twv.asc   
  NSS.AMBX.NK.D01001.S2205.E2324.B1371415.WI-twv.asc  
  NSS.AMBX.NK.D01001.S0824.E1018.B1370607.WI-twv.asc   
  NSS.AMBX.NK.D01001.S2318.E0105.B1371416.WI-twv.asc  
  NSS.AMBX.NK.D01001.S1015.E1204.B1370708.WI-twv.asc   
  NSS.AMBX.NK.D01001.S1159.E1344.B1370809.WI-twv.asc   
  NSS.AMBX.NK.D01001.S1339.E1520.B1370910.GC-twv.asc