2,DATETIME,DATETIME,MJD2K,DOUBLE,Mean time of the measurement sequence used for each retrieval
2,DATETIME.START,DATETIME,MJD2K,DOUBLE,Start time of the measurement sequence used for each retrieval
2,DATETIME.STOP,DATETIME,MJD2K,DOUBLE,End time of the measurement sequence used for each retrieval
2,DATETIME,DATETIME,MJD2K,DOUBLE,Mean time of the measurement sequence used for each retrieval; defined relative to reference datetime of Jan. 1 2000 at 0:00:00 UT which is equal to 0.00,x
2,DATETIME.START,DATETIME,MJD2K,DOUBLE,Start time of the measurement sequence used for each retrieval; defined relative to reference datetime of Jan. 1 2000 at 0:00:00 UT which is equal to 0.00,x
2,DATETIME.STOP,DATETIME,MJD2K,DOUBLE,End time of the measurement sequence used for each retrieval; defined relative to reference datetime of Jan. 1 2000 at 0:00:00 UT which is equal to 0.00,x
2,INTEGRATION.TIME,DATETIME,s,REAL,Duration of the DOAS measurements corresponding to the retrieved profile,x
2,LATITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Latitude north (decimal degrees) of the location of the instrument (+ for north
2,LONGITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Longitude east (decimal degrees) of the location of the instrument (+ for east
2,LATITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Latitude north (decimal degrees) of the location of the instrument (+ for north; - for south),x
2,LONGITUDE.INSTRUMENT,CONSTANT,deg,REAL,Inst. geolocation. Longitude east (decimal degrees) of the location of the instrument (+ for east; - for west),x
2,ALTITUDE.INSTRUMENT,CONSTANT,m,REAL,Inst. geolocation. Altitude of the instrument relative to the location site,x
2,ALTITUDE,[ALTITUDE|DATETIME;ALTITUDE],km,REAL,Retrieval effective altitude vector - possibly also dependent on DATETIME - in which case it becomes a 2D matrix,x
2,PRESSURE_INDEPENDENT,DATETIME;ALTITUDE,hPa,REAL,Effective air pressure at each altitude,x
2,COLUMN.PARTIAL_INDEPENDENT,DATETIME;ALTITUDE,molec cm-2,REAL,Vertical profile of partial columns of dry air number densities (for conversion between VMR and partial column profile),x
2,COLUMN.PARTIAL_INDEPENDENT_SOURCE,[CONSTANT|DATETIME|DATETIME;ALTITUDE],[empty],STRING,Partial columns of air source (e.g. NCEP; Sonde; ECMWF etc.),x
2,ALTITUDE.BOUNDARIES,[ALTITUDE;INDEPENDENT|DATETIME;ALTITUDE;INDEPENDENT],km,REAL,2D matrix with on each row the lower and upper boundaries of the layers for which the partial columns are provided. In layer-based retrieval these are equal to the lower and upper boundaries of the respective retrieval layers. This matrix becomes 3D if the ALTITUDE.BOUNDARIES varies with DATETIME,x
2,ANGLE.SOLAR_ZENITH.ASTRONOMICAL,DATETIME,deg,REAL,The solar astronomical zenith angle at which the measurement was taken,x
2,ANGLE.SOLAR_AZIMUTH,DATETIME,deg,REAL,The solar azimuth angle at which the measurement was taken using north as the reference plane and increasing clockwise (0 for north
2,ANGLE.VIEW_AZIMUTH,DATETIME,deg,REAL,The azimuth viewing direction of the instrument using north as the reference plane and increasing clockwise (0 for north
2,ANGLE.SOLAR_AZIMUTH,DATETIME,deg,REAL,The solar azimuth angle at which the measurement was taken using north as the reference plane and increasing clockwise (0 for north; 90 for east and so on),x
2,ANGLE.VIEW_AZIMUTH,DATETIME,deg,REAL,The azimuth viewing direction of the instrument using north as the reference plane and increasing clockwise (0 for north; 90 for east and so on),x
2,ANGLE.VIEW_ZENITH,DATETIME,deg,REAL,The zenith viewing direction of the instrument,x
2,LATITUDE,DATETIME
2,LONGITUDE,DATETIME
2,AEROSOL.OPTICAL.DEPTH_INDEPENDENT,DATETIME,1,REAL,The total aerosol optical depth used for the retrieval is based on a climatology
2,LATITUDE,DATETIME;ALTITUDE,deg,REAL,The latitude of the effective air mass at each altitude (+ for north; - for south),o
2,LONGITUDE,DATETIME;ALTITUDE,deg,REAL,The longitude of the effective air mass at each altitude (+ for east; - for west),o
2,AEROSOL.OPTICAL.DEPTH_INDEPENDENT,DATETIME,1,REAL,The total aerosol optical depth used for the retrieval is based on a climatology; model; or auxiliary measurements,o
2,AEROSOL.OPTICAL.DEPTH_ABSORPTION.SOLAR,DATETIME,1,REAL,The total aerosol optical depth used for the retrieval is retrieved from the Direct Sun DOAS measurements,o
2,[GAS].COLUMN_ABSORPTION.SOLAR,DATETIME,Pmolec cm-2,REAL,Total vertical column of target gas retrieved from Direct Sun DOAS measurements,x
2,[GAS].COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.RANDOM.STANDARD,DATETIME,Pmolec cm-2,REAL,Total random uncertainty on the total column (expressed in same units as the column) (without smoothing error) retrieved from Direct Sun DOAS measurements,x
2,[GAS].COLUMN_ABSORPTION.SOLAR_UNCERTAINTY.SYSTEMATIC.STANDARD,DATETIME,Pmolec cm-2,REAL,Total systematic uncertainty on the retrieved total column (expressed in same units as the column) (without smoothing error) retrieved from Direct Sun DOAS measurements,x
4,SOURCE.PRODUCT,INDEPENDENT,[empty],STRING,Information relevant to the source history of the Metadata and Data,o
\ No newline at end of file
2,[GAS].COLUMN_ABSORPTION.SOLAR_AVK,DATETIME;ALTITUDE,1,REAL,Averaging kernel matrix associated with the total vertical column of the target gas (in molec cm-2/molec cm-2 units) retrieved from Direct Sun DOAS measurements,o
2,[GAS].COLUMN.PARTIAL_ABSORPTION.SOLAR_APRIORI,DATETIME;ALTITUDE,Pmolec cm-2,REAL,Vertical profile of apriori of partial columns per layer (in molec cm-2 units) associated with the Direct Sun column retrieval,x if [GAS].COLUMN_ABSORPTION.SOLAR_AVK reported
4,SOURCE.PRODUCT,INDEPENDENT,[empty],STRING,Information relevant to the source history of the Metadata and Data,o
