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Previous Next Up Topic Products and Algorithms / Satellite Data Products & Algorithms / Precision (705 hits)
By Alfredo Date 2007-03-07 12:58
  Are there any statistics on the precision of L2 Chl-a and SST estimates from Modis Aqua Data currently available at the Ocean Color   Browser?

Thanks
By kay Date 2007-03-20 19:31
generally the sea surface temperature bias  during the daytime is -0.1 +- 0.6. Below is a table of the validation stats for both sensors (day,night, sst,sst4) againt in situ buoys.

Bouy stats   sat-insitu           
           
SST 11-12um  TERRA           
  day      night   
Year  mean  RMS  Count  mean  RMS  Count
2000  -0.139  0.797  3091  -0.186  0.794  1800
2001  -0.262  1.43  6321  -0.228  0.707  4935
2002  -0.135  0.621  9244  -0.204  0.58  6935
2003  -0.086  0.607  15685  -0.19  0.558  11058
2004  -0.068  0.579  24964  -0.167  0.559  16943
2005  -0.11  0.549  39826  -0.213  0.519  28460
2006  -0.105  0.574  32495  -208  0.524  23149
all years  -0.108  0.65  131626  -0.2  0.555  93280
total      131626      93280
           
SST 11-12um  AQUA           
  day       night   
Year  mean  RMS  Count  mean  RMS  Count
2001   -   -   -   -   -   -
2002  -0.153  0.538  10293  -0.235  0.499  5906
2003  -0.133  0.577  22988  -0.224  0.508  12977
2004  -0.137  0.562  26415  -0.219  -0.484  15471
2005  -0.152  0.539  40941  -0.235  0.461  25083
2006  -0.135  0.55  34687  -0.205  0.452  22187
all years  -0.142  0.553  135324  -0.222  0.475  81624
total      135324      81624

           
SST4  TERRA       AQUA    
Year  Night       night    
  mean  RMS  Count  mean  RMS  Count
2000  -0.161  0.829  1993     
2001  -0.220  0.663  5397  -  -  -
2002  -0.191  0.528  7580  -0.224  0.449  6429
2003  -0.176  0.500  12006  -0.217  0.455  14095
2004  -0.178  0.493  18452  -0.214  0.426  16765
2005  -0.178  0.471  31130  -0.223  0.414  27280
2006  -0.174  0.473  25294  -0.208  0.404  24140
all years  -0.179  0.505  101852  -0.216  0.423  88709
totals      101852      88709
Previous Next Up Topic Products and Algorithms / Satellite Data Products & Algorithms / Precision (705 hits)



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