File name: Pandora213s1_ChiangMai_L2_rnvh3p1-8.txt
File generation date: 20240919T043651.3Z
Data description: Level 2 file (columns and more)
Data file version: rnvh3p1-8
Data product status: Nitrogen dioxide data are official, Water vapor data are unvalidated
Local principal investigator: Surassawadee Phoompanit
Network principal investigator: Alexander Cede
DOI: 10.48596/pgn.rnvh3p1-8.ChiangMai.P213s1
Instrument type: Pandora
Instrument number: 213
Spectrometer number: 1
Processing software version used: BlickP v1.8.49
Full location name: Chiang Mai Rajabhat University (Chiang Mai)
Short location name: ChiangMai
Country of location: Thailand
Location latitude [deg]: 18.8063
Location longitude [deg]: 98.9860
Location altitude [m]: 60
Data start time: NONE
Data end time: NONE
Data caveats: OoB data based on session102
---------------------------------------------------------------------------------------
Column 1: UT date and time for measurement center, yyyymmddThhmmssZ (ISO 8601)
Column 2: Fractional days since 1-Jan-2000 UT midnight for measurement center
Column 3: Effective duration of measurement [s]
Column 4: Solar zenith angle for measurement center [deg]
Column 5: Solar azimuth for measurement center [deg], 0=north, increases clockwise
Column 6: Lunar zenith angle for measurement center [deg]
Column 7: Lunar azimuth for measurement center [deg], 0=north, increases clockwise
Column 8: Pointing zenith angle for measurement center [deg]
Column 9: Pointing azimuth for measurement center [deg], 0=north, increases clockwise
Column 10: rms of unweighted fitting residuals, -9=fitting not successful
Column 11: Normalized rms of fitting residuals weighted with independent uncertainty, -9=fitting not successful or no uncertainty given
Column 12: Expected rms of unweighted fitting residuals based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 13: Expected normalized rms of weighted fitting residuals based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 14: Climatological station pressure [mbar]
Column 15: Climatological station temperature [K]
Column 16: Climatological effective O2 height [km]
Column 17: Climatological effective O2O2 height [km]
Column 18: Climatological surface O2 concentration [mol/m3]
Column 19: Climatological surface O2O2 concentration [mol2/m6]
Column 20: Climatological total O2 column [mol/m2]
Column 21: Climatological total O2O2 column [mol2/m5]
Column 22: Data processing type index
Column 23: Calibration file version
Column 24: Calibration file validity starting date
Column 25: Mean value of measured data inside fitting window [same units as measurements]
Column 26: Wavelength effective temperature [°C], 999=no effective temperature given
Column 27: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher)
Column 28: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination
Column 29: Retrieved total wavelength shift [nm], -9=no wavelength change fitting
Column 30: Retrieved resolution change [%], -999=no resolution change fitting
Column 31: Integration time [ms]
Column 32: Number of bright count cycles
Column 33: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions
Column 34: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions
Column 35: Atmospheric variability [%], 999=no atmospheric variability was determined
Column 36: L1 data quality flag, 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 37: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ1 limit, 0=Saturated data, 1=Too few dark counts measurements, 2=No temperature given or effective temperature too different from the reference temperature, 3=Dark count too high, 4=Unsuccessful dark background fitting, 5=The dark count differs significantly from the dark map for too many pixels, 6=Absolute value of estimated average residual stray light level too high, 7=Although attempted, no wavelength change could be retrieved, 8=Absolute value of retrieved wavelength shift too large, 9=Retrieved wavelength shift differs too much from the shift predicted by the effective temperature
Column 38: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 39: L2Fit data quality flag, 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 40: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ1 limit, 0=L1 data quality above 0, 1=Spectral fitting was not successful, 2=Wavelength shift too large, 3=Normalized rms of fitting residuals weighted with independent uncertainty too large
Column 41: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 42: L2 data quality flag for water vapor, 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality, 20=unusable high quality, 21=unusable medium quality, 22=unusable low quality
Column 43: Sum over 2^i using those i, for which the corresponding L2 data quality parameter for water vapor exceeds the DQ1 limit, 0=L2Fit data quality above 0, 1=Retrieval error, 2=Air mass factor too large, 3=Atmospheric variability too large
Column 44: Sum over 2^i using those i, for which the corresponding L2 data quality parameter for water vapor exceeds the DQ2 limit (same parameters as for DQ1)
Column 45: Water vapor surface concentration [mol/m3], -9e99=retrieval not successful
Column 46: Independent uncertainty of water vapor surface concentration [mol/m3], -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg, -7=uncertainty could not be retrieved since slant column uncertainties were missing
Column 47: Water vapor surface concentration index, 1=Fully mixed case from extrapolation to horizon, 2=Fully mixed case from largest pointing zenith angle, 3=Heterogeneous case from extrapolation to horizon, 4=Heterogeneous case from largest pointing zenith angle, -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg
Column 48: Water vapor heterogeneity flag, 0=well mixed conditions, 1=heterogeneous conditions, -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg
Column 49: Water vapor tropospheric vertical column amount [moles per square meter], -9e99=retrieval not successful
Column 50: Independent uncertainty of water vapor tropospheric vertical column amount [moles per square meter], -4=tropospheric column was estimated from direct sun measurements using effective temperature, -5=tropospheric column was estimated from direct sun measurements using stratospheric climatology, -7=uncertainty could not be retrieved since slant column uncertainties were missing
Column 51: Maximum horizontal distance for water vapor tropospheric column [km]
Column 52: Maximum vertical distance for water vapor tropospheric column [km]
Column 53: L2 data quality flag for nitrogen dioxide, 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality, 20=unusable high quality, 21=unusable medium quality, 22=unusable low quality
Column 54: Sum over 2^i using those i, for which the corresponding L2 data quality parameter for nitrogen dioxide exceeds the DQ1 limit, 0=L2Fit data quality above 0, 1=Retrieval error, 2=Air mass factor too large, 3=Atmospheric variability too large
Column 55: Sum over 2^i using those i, for which the corresponding L2 data quality parameter for nitrogen dioxide exceeds the DQ2 limit (same parameters as for DQ1)
Column 56: Nitrogen dioxide surface concentration [mol/m3], -9e99=retrieval not successful
Column 57: Independent uncertainty of nitrogen dioxide surface concentration [mol/m3], -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg, -7=uncertainty could not be retrieved since slant column uncertainties were missing
Column 58: Nitrogen dioxide surface concentration index, 1=Fully mixed case from extrapolation to horizon, 2=Fully mixed case from largest pointing zenith angle, 3=Heterogeneous case from extrapolation to horizon, 4=Heterogeneous case from largest pointing zenith angle, -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg
Column 59: Nitrogen dioxide heterogeneity flag, 0=well mixed conditions, 1=heterogeneous conditions, -6=no surface concentration was retrieved since the maximum viewing zenith angle was below 87deg
Column 60: Climatological nitrogen dioxide stratospheric column amount [moles per square meter]
Column 61: Uncertainty of climatological nitrogen dioxide stratospheric column amount [moles per square meter]
Column 62: Nitrogen dioxide tropospheric vertical column amount [moles per square meter], -9e99=retrieval not successful
Column 63: Independent uncertainty of nitrogen dioxide tropospheric vertical column amount [moles per square meter], -4=tropospheric column was estimated from direct sun measurements using effective temperature, -5=tropospheric column was estimated from direct sun measurements using stratospheric climatology, -7=uncertainty could not be retrieved since slant column uncertainties were missing
Column 64: Maximum horizontal distance for nitrogen dioxide tropospheric column [km]
Column 65: Maximum vertical distance for nitrogen dioxide tropospheric column [km]
Column 66: Top height of water vapor layer 1 [km], -6=no profile was retrieved since the maximum viewing zenith angle was below 87deg
Column 67: Partial water vapor vertical column amount in layer 1 [moles per square meter], -9e99=retrieval not successful
Column 68: Top height of nitrogen dioxide layer 1 [km], -6=no profile was retrieved since the maximum viewing zenith angle was below 87deg
Column 69: Partial nitrogen dioxide vertical column amount in layer 1 [moles per square meter], -9e99=retrieval not successful
From Column 70: Optional results for higher layers in the same sequence as for layer 1 (4 columns per layer)
---------------------------------------------------------------------------------------