SCIAMACHY total ozone product specification

Henk Eskes and Ronald van der A, KNMI

The KNMI total ozone product is available in the form of two files:

Product Specification Table (ASCII)

Each line in the ascii data file is one retrieval. Example:

20030502 070103.849   6940   5990   6915   5966   6821   6018   6799   5994   6868   5992  6 398   2 381 1048 4482 -3417  28  606  2.578  2.809  49  16
20040816 175913.017   2460   7205   2413   7224   2727   7269   2682   7287   2571   7247  5 3053   38 2839 19925 8423 -1424  22  469  42  6.345  7.292

The specification of the fields:

Dataset name Data type Position Unit Description
Date string 1-8 - Date in format (YYYYMMDD)
Time string 9-19 - UTC time in format (_hhmmss.sss)
Longitude 1 integer 18-26 0.01 degree Longitude of corner point 1 of the ground pixel
Latitude 1 integer 27-33 0.01 degree Latitude of corner point 1 of the ground pixel
Longitude 2 integer 34-40 0.01 degree Longitude of corner point 2 of the ground pixel
Latitude 2 integer 41-47 0.01 degree Latitude of corner point 2 of the ground pixel
Longitude 3 integer 48-54 0.01 degree Longitude of corner point 3 of the ground pixel
Latitude 3 integer 55-61 0.01 degree Latitude of corner point 3 of the ground pixel
Longitude 4 integer 62-68 0.01 degree Longitude of corner point 4 of the ground pixel
Latitude 4 integer 69-75 0.01 degree Latitude of corner point 4 of the ground pixel
Longitude 5 integer 76-82 0.01 degree Longitude of center coordinate of ground pixel
Latitude 5 integer 83-89 0.01 degree Latitude of center coordinate of the ground pixel
Pixel subtype integer 90-92 - StateID ( for backscan-pixels: stateID + 50 ) *
Total ozone column integer 93-97 0.1 DU total vertical ozone column
Error integer 98-102 0.1 DU (minimum) error in the ozone column
Raw ozone column integer 103-107 0.1 DU vertical ozone column above cloud-top
Slant ozone column integer 108-113 0.1 DU total slant ozone column
SZA integer 114-118 0.01 degree solar zenith angle at the EarthÕs surface
VZA integer 119-124 0.01 degree viewing zenith angle at the EarthÕs surface
cloud fraction integer 125-128 % cloud-fraction as derived with FRESCO
cloud-top pressure integer 129-133 mb cloud top pressure as derived with FRESCO
Radiance weight cld. integer 134-137 % radiance weight of cloudy part of pixel
AMF float 138-144 - clear-sky AMF
AMF-cloud float 145-151 - cloudy AMF (cloud-albedo=0.8)

* A decription of the states for nominal operations can be found on the web-site :
http://atmos.af.op.dlr.de/projects/scops/states_description/states_description_actual.html