Dataset Information

IdentifierProductDOI: 10.5067/AURA/OMI/DATA3010
ProductGenerationAlgorithm: OMHCHOd
RangeBeginningDate: 2012-10-03
ContactPersonName: Kelly Chance
GranuleID: OMI-Aura_L3-OMHCHOd_2012m1003_v003-2019m0726t081525.nc
RangeBeginningTime: 00:00:00Z
RangeEndingTime: 00:00:00Z
ContactPersonEmail: kchange@cfa.harvard.edu
DataSetQuality: OMHCHOd dataset has been computed after excluding level 2 observations with SZA > 70 and cloud fraction > 0.3 and including only the highest quality retrievals as characterized by the level 2 product quality flags. Further details can be found in the OMHCHOd.README file
ProcessingLevel: Level 3
VersionID: 003
IdentifierProductionDOIAuthority: https://www.doi.org
references: Sun et al., 2018 (https://doi.org/10.5194/amt-11-6679-2018),Gonzalez Abad et al., 2015 (https://doi.org/10.5194/amt-8-19-2015)
SouthernmostLatitude: -90.00000000
ContactPersonRole: Lead algorithm scientist
ObservationArea: Global
institution: OMI SIPS
ProductionDateTime: 2019m0726t081525Z
NorthernmostLatitude: 90.00000000
MaximumCloudFraction: 0.3000000119
ProductGenerationAlgorithmVersion: 0.0.5
LongitudeResolution: 0.1000000015
title: OMI/Aura Formaldehyde (HCHO) Total Column Daily L3 Weighted Mean Global 0.1deg Lat/Lon Grid
MaximumSZA: 70.00000000
Format: NetCDF-4
EasternmostLongitude: 180.0000000
InputOriginalFile: OMI-Aura_L2-OMHCHO_2012m1002t2242-o43712_v003-2014m0707t144205.he5,OMI-Aura_L2-OMHCHO_2012m1003t0021-o43713_v003-2014m0707t144656.he5,OMI-Aura_L2-OMHCHO_2012m1003t0200-o43714_v003-2014m0707t144649.he5,OMI-Aura_L2-OMHCHO_2012m1003t0339-o43715_v003-2014m0707t144328.he5,OMI-Aura_L2-OMHCHO_2012m1003t0518-o43716_v003-2014m0707t144116.he5,OMI-Aura_L2-OMHCHO_2012m1003t0657-o43717_v003-2014m0707t145207.he5,OMI-Aura_L2-OMHCHO_2012m1003t0835-o43718_v003-2014m0707t144322.he5,OMI-Aura_L2-OMHCHO_2012m1003t1014-o43719_v003-2014m0707t144518.he5,OMI-Aura_L2-OMHCHO_2012m1003t1153-o43720_v003-2014m0707t144448.he5,OMI-Aura_L2-OMHCHO_2012m1003t1332-o43721_v003-2014m0707t145406.he5,OMI-Aura_L2-OMHCHO_2012m1003t1511-o43722_v003-2014m0707t145430.he5,OMI-Aura_L2-OMHCHO_2012m1003t1650-o43723_v003-2014m0707t145400.he5,OMI-Aura_L2-OMHCHO_2012m1003t1829-o43724_v003-2014m0707t145619.he5,OMI-Aura_L2-OMHCHO_2012m1003t2008-o43725_v003-2014m0707t145738.he5,OMI-Aura_L2-OMHCHO_2012m1003t2146-o43726_v003-2014m0707t154028.he5,OMI-Aura_L2-OMHCHO_2012m1003t2325-o43727_v003-2014m0707t150448.he5
Conventions: CF-1.7
source: OMI
DayOfYear: 277
LatitudeResolution: 0.1000000015
LongName: OMI/Aura Formaldehyde (HCHO) Total Column Daily L3 Weighted Mean Global 0.1deg Lat/Lon Grid
RangeEndingDate: 2012-10-04
ShortName: OMHCHOd
WesternmostLongitude: -180.0000000
history: 2019m0726t081525Z; Original file created by OMI SIPS


Variables in this Dataset

key_science_data_column_amount: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: mean formaldehyde column amount; units of molecules/cm^2
long_name: HCHO column amount
units: molecules/cm^2
coordinates: longitude latitude
_Storage: contiguous
origname: column_amount
fullnamepath: /key_science_data/column_amount
key_science_data_column_uncertainty: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: mean column amount uncertainty; units of molecules/cm^2
long_name: HCHO column uncertainty
units: molecules/cm^2
coordinates: longitude latitude
_Storage: contiguous
origname: column_uncertainty
fullnamepath: /key_science_data/column_uncertainty
support_data_albedo: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: surface albedo
long_name: surface albedo
units: 1
valid_min: 0.000000000
valid_max: 1.000000000
coordinates: longitude latitude
_Storage: contiguous
origname: albedo
fullnamepath: /support_data/albedo
support_data_terrain_height: Array of 16 bit Integers [latitude = 0..1799][longitude = 0..3599]
_FillValue: -30000
comment: terrain height
long_name: terrain height
units: m
valid_min: -1000
valid_max: 10000
coordinates: longitude latitude
_Storage: contiguous
origname: terrain_height
fullnamepath: /support_data/terrain_height
support_data_cloud_fraction: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: cloud fraction for AMF calculation
long_name: AMF cloud fraction
units: 1
valid_min: 0.000000000
valid_max: 1.000000000
coordinates: longitude latitude
_Storage: contiguous
origname: cloud_fraction
fullnamepath: /support_data/cloud_fraction
support_data_cloud_pressure: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: cloud pressure for AMF calculation
long_name: AMF cloud pressure
units: hPa
valid_min: 0.000000000
valid_max: 1200.000000
coordinates: longitude latitude
_Storage: contiguous
origname: cloud_pressure
fullnamepath: /support_data/cloud_pressure
support_data_amf: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: air mass factor (AMF)
long_name: air mass factor
units: 1
valid_min: 0.000000000
valid_max: 100.0000000
coordinates: longitude latitude
_Storage: contiguous
origname: amf
fullnamepath: /support_data/amf
support_data_sample_weight: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: sample weight
long_name: sample weight
units: 1
valid_min: 0.000000000
coordinates: longitude latitude
_Storage: contiguous
origname: sample_weight
fullnamepath: /support_data/sample_weight
qa_statistics_num_samples: Array of 32 bit Reals [latitude = 0..1799][longitude = 0..3599]
_FillValue: -1.000000000
comment: number of samples in the calculation considering the summed spatial sensitivity of all satellite pixels in each level 3 grid box
long_name: number of samples
units: 1
valid_min: 0.000000000
valid_max: 1000.000000
coordinates: longitude latitude
_Storage: contiguous
origname: num_samples
fullnamepath: /qa_statistics/num_samples
qa_statistics_data_quality_flag: Array of 16 bit Integers [latitude = 0..1799][longitude = 0..3599]
_FillValue: 2
comment: main data quality flag. 0 (good, number of samples > 0.1)1 (good, number of samples < 0.1) 2 (bad / not computed)
long_name: main data quality flag
falg_values: 0, 1, 2
flag_meanings: good_number_of_samples_greater_than_0.1 good_number_of_samples_less_than_0.1 bad_or_not_computed
valid_min: 0
valid_max: 2
coordinates: longitude latitude
_Storage: contiguous
origname: data_quality_flag
fullnamepath: /qa_statistics/data_quality_flag
latitude: Array of 32 bit Reals [latitude = 0..1799]
_FillValue: -1.000000015e+30
comment: latitude at grid box center
long_name: latitude
units: degrees_north
valid_min: -90.00000000
valid_max: 90.00000000
_Storage: contiguous
origname: latitude
fullnamepath: /latitude
longitude: Array of 32 bit Reals [longitude = 0..3599]
_FillValue: -1.000000015e+30
comment: longitude at grid box center
long_name: longitude
units: degrees_east
valid_min: -180.0000000
valid_max: 180.0000000
_Storage: contiguous
origname: longitude
fullnamepath: /longitude