NO2 overpass data |
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Some notes regarding the data file are given below the table.
Notes
The list in the table above gives for each ground station the geographical coordinates (in degrees). If there is no ground station known in a place listed above, the coordinates are those of the inhabited place.These files show the nearest OMI measurement in a an OMI track (orbit), if it is closer than 50 km to the groundstation. Typically, a few overpasses per day are available.
The data files give for each overpass:
- date of observation: year, month, day (UTC)
- time of observation: hour, minutes,seconds (UTC)
- latitude corner 1 [degrees]
- longitude corner 1 [degrees]
- latitude corner 2 [degrees]
- longitude corner 2 [degrees]
- latitude corner 3 [degrees]
- longitude corner 3 [degrees]
- latitude corner 4 [degrees]
- longitude corner 4 [degrees]
- latitude center point [degrees]
- longitude center point [degrees]
- distance between observation and station [km]
- Total vertical column [1015/cm2]
- Error on total vertical column [1015/cm2]
- Tropopsheric vertical column [1015/cm2]
- Error on tropospheric vertical column [1015/cm2]
- Slant column NO2 [1015/cm2]
- Solar zenith angle [degrees]
- Cloud fraction [-] (No data = -1)
- Cloud pressure [hPa] (No data = 0.)
- Cloud radiance fraction [%]
- Across-track pixel number [1-60], only for OMI