Dataset Information

keywords: EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > ANTENNA TEMPERATURE
Conventions: CF-1.6, ACDD-1.3
history: Created on 2021-05-20T12:04:15Z by L1A ATMS PGE at Sounder SIPS: GES DISC, v03.15.02; Created on 2021-05-20T15:05:02Z by Level 1B ATMS PGE at Sounder SIPS: GES DISC, version v03_15
source: ATMS instrument telemetry
processing_level: 1B
product_name_type_id: L1B
acknowledgment: Support for this research was provided by NASA.
license: Freely Distributed
standard_name_vocabulary: CF Standard Name Table v28
date_created: 2021-05-20T15:05:02Z
creator_name: Sounder SIPS: GES DISC
creator_email: gsfc-help-disc@lists.nasa.gov
creator_url: http://disc.sci.gsfc.nasa.gov/
institution: Goddard Space Flight Center - National Aeronautics and Space Administration
project: Sounder SIPS
product_name_project: SNDR
publisher_name: Goddard Earth Science Data and Information Services Center
publisher_email: gsfc-help-disc@lists.nasa.gov
publisher_url: http://disc.sci.gsfc.nasa.gov/
geospatial_bounds: POLYGON ((17.27 -36.73, 44.72 -32.41, 37.35 -12.36, 14.26 -16.02, 17.27 -36.73))
geospatial_bounds_crs: EPSG:4326
geospatial_lat_min: -36.73728943
geospatial_lat_max: -12.36659813
geospatial_lon_min: 14.26504230
geospatial_lon_max: 44.72531509
time_coverage_start: 2014-02-17T11:48:00Z
time_of_first_valid_obs: 2014-02-17T11:48:02Z
time_coverage_mid: 2014-02-17T11:51:00Z
time_coverage_end: 2014-02-17T11:54:00Z
time_of_last_valid_obs: 2014-02-17T11:54:01Z
time_coverage_duration: P0000-00-00T00:06:00
product_name_duration: m06
creator_type: institution
creator_institution: Goddard Space Flight Center - National Aeronautics and Space Administration
product_version: v03.15.02
keywords_vocabulary: GCMD:GCMD Keywords
platform: SUOMI-NPP > Suomi National Polar-orbiting Partnership
platform_vocabulary: GCMD:GCMD Keywords
product_name_platform: SNPP
instrument: ATMS > Advanced Technology Microwave Sounder
instrument_vocabulary: GCMD:GCMD Keywords
product_name_instr: ATMS
product_name: SNDR.SNPP.ATMS.20140217T1148.m06.g119.L1B.std.v03_15.G.210520150502.nc
product_name_variant: std
product_name_version: v03_15
product_name_producer: G
product_name_timestamp: 210520150502
product_name_extension: nc
granule_number: 119
product_name_granule_number: g119
gran_id: 20140217T1148
geospatial_lat_mid: -24.55194473
geospatial_lon_mid: 29.49517822
featureType: point
data_structure: swath
cdm_data_type: Swath
id: 10.5067/FCXKUUE9VCLN
naming_authority: http://dx.doi.org/
identifier_product_doi: 10.5067/FCXKUUE9VCLN
identifier_product_doi_authority: http://dx.doi.org/
algorithm_version: 2017-08 IDPS emulation
production_host: Linux ac25-local 3.10.0-1160.24.1.el7.x86_64 #1 SMP Thu Apr 8 19:51:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
format_version: v02.02.08
input_file_names: SNPPATMSL1A.A2014048.1142.3.2021140110623.hdf; SNPPATMSL1A.A2014048.1148.3.2021140110623.hdf; SNPPATMSL1A.A2014048.1154.3.2021140110753.hdf; SNDR.SNPP.L1bMw.apf.171115000000.xml; SNDR.SNPP.L1bMw.template.201217000000.nc
input_file_types: ATMS_L1A; ATMS_L1A; ATMS_L1A; ATMS_L1B_AlgParam; ATMS_L1B_Template
input_file_dates: 2014-02-17; 2014-02-17; 2014-02-17; N/A; N/A
orbitDirection: Ascending
day_night_flag: Day
AutomaticQualityFlag: Passed
qa_pct_data_missing: 0.000000000
qa_pct_data_geo: 100.0000000
qa_pct_data_sci_mode: 100.0000000
qa_no_data: FALSE
title: SNPP ATMS Level-1B
summary: The Level-1B ATMS product includes data from the ATMS instrument for one six-minute interval. Data is geolocated and calibrated to antenna temperature.
shortname: SNPPATMSL1B
product_group: l1b_atms
metadata_link: http://disc.sci.gsfc.nasa.gov/
references: ATMS ATBD is in review. It will be published at http://eospso.gsfc.nasa.gov/content/algorithm-theoretical-basis-documents
contributor_name: Jet Propulsion Laboratory: Bjorn Lambrigtsen
contributor_role: ATMS Scientist


Variables in this Dataset

sol_zen: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 180.0000000
long_name: solar zenith angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: solar_zenith_angle
units: degree
description: solar zenith angle at the center of the spot
AIRS_HDF_name: solzen
origname: sol_zen
fullnamepath: /sol_zen
coordinates: lon lat
sat_att: Array of 32 bit Reals [atrack = 0..134][attitude = 0..2]
valid_range: -180.0000000, 180.0000000
long_name: satellite attitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: satellite attitude at scan_mid_time. An orthogonal triad. First element is angle about the +x (roll) ORB axis. +x axis is positively oriented in the direction of orbital flight. Second element is angle about +y (pitch) ORB axis. +y axis is oriented normal to the orbit plane with the positive sense opposite to that of the orbit's angular momentum vector H. Third element is angle about +z (yaw) axis. +z axis is positively oriented Earthward parallel to the satellite radius vector R from the spacecraft center of mass to the center of the Earth.
origname: sat_att
fullnamepath: /sat_att
coordinates: subsat_lon subsat_lat attitude_lbl
sat_range: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 100000.0000, 10000000.00
long_name: satellite range
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: m
description: line of sight distance between satellite and spot center
origname: sat_range
fullnamepath: /sat_range
coordinates: lon lat
obs_time_utc: Array of 16 bit Unsigned integers [atrack = 0..134][xtrack = 0..95][utc_tuple = 0..7]
long_name: earth view UTC FOV time
_FillValue: 65535
coverage_content_type: referenceInformation
description: UTC earth view observation time as an array of integers: year, month, day, hour, minute, second, millisec, microsec
origname: obs_time_utc
fullnamepath: /obs_time_utc
coordinates: utc_tuple_lbl
scan_mid_time: Array of 64 bit Reals [atrack = 0..134]
valid_range: -2934835217.0000000, 3376598410.0000000
long_name: midscan TAI93
_FillValue: 9.9692099683868690e+36
coverage_content_type: referenceInformation
standard_name: time
units: seconds since 1993-01-01 00:00
description: TAI93 at middle of earth scene scans
AIRS_HDF_name: nadirTAI
origname: scan_mid_time
fullnamepath: /scan_mid_time
coordinates: subsat_lon subsat_lat
sol_azi: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 360.0000000
long_name: solar azimuth angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: solar_azimuth_angle
units: degree
description: solar azimuth angle at the center of the spot (clockwise from North)
AIRS_HDF_name: solazi
origname: sol_azi
fullnamepath: /sol_azi
coordinates: lon lat
obs_time_tai93: Array of 64 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: -2934835217.0000000, 3376598410.0000000
long_name: earth view FOV midtime
_FillValue: 9.9692099683868690e+36
coverage_content_type: referenceInformation
standard_name: time
units: seconds since 1993-01-01 00:00
description: earth view observation midtime for each FOV
AIRS_HDF_name: Time
origname: obs_time_tai93
fullnamepath: /obs_time_tai93
band_surf_alt: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4]
units: m
valid_range: -500.0000000, 10000.00000
long_name: band surface altitude
standard_name: surface_altitude
description: band-specific mean surface altitude over the fov
_FillValue: 9.969209968e+36
cell_methods: area: mean (beam-weighted)
coverage_content_type: referenceInformation
origname: band_surf_alt
fullnamepath: /band_surf_alt
coordinates: band_lbl band_lat band_lon
band_lon: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4]
units: degrees_east
valid_range: -180.0000000, 180.0000000
long_name: band longitude
standard_name: longitude
description: band-specific fov center longitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
bounds: band_lon_bnds
origname: band_lon
fullnamepath: /band_lon
lon: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: -180.0000000, 180.0000000
long_name: longitude
_FillValue: 9.969209968e+36
bounds: lon_bnds
coverage_content_type: referenceInformation
standard_name: longitude
units: degrees_east
description: longitude of FOV center
AIRS_HDF_name: Longitude
origname: lon
fullnamepath: /lon
sun_glint_dist: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 30000000.00
long_name: sun glint distance
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: m
description: Distance from the center of the calculated sun glint spot to the center of the spot. Note that there may not be a glint for cloudy or land cases and in ocean cases the glint can move based on wind conditions. Fill for night observations.
AIRS_HDF_name: sun_glint_distance
origname: sun_glint_dist
fullnamepath: /sun_glint_dist
coordinates: lon lat
moon_ang: Array of 32 bit Reals [atrack = 0..134][spacextrack = 0..3]
valid_range: 0.000000000, 180.0000000
long_name: moon angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: angle between moon and FOV center for space view
origname: moon_ang
fullnamepath: /moon_ang
coordinates: subsat_lon subsat_lat
sat_pos: Array of 32 bit Reals [atrack = 0..134][spatial = 0..2]
long_name: satellite position
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: m
description: satellite ECR position at scan_mid_time
origname: sat_pos
fullnamepath: /sat_pos
coordinates: subsat_lon subsat_lat spatial_lbl
asc_node_lon: 32 bit Real
valid_range: -180.0000000, 180.0000000
long_name: ascending node
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degrees_east
description: Longitude of the last ascending node of spacecraft orbit before time_coverage_end.
AIRS_HDF_name: eq_x_longitude
origname: asc_node_lon
fullnamepath: /asc_node_lon
band_geoloc_chan: Array of 16 bit Unsigned integers [band = 0..4]
units: 1
valid_range: 1, 22
long_name: band geolocation channel
description: Channel used in determining the geolocation information for each band
_FillValue: 65535
coverage_content_type: referenceInformation
origname: band_geoloc_chan
fullnamepath: /band_geoloc_chan
coordinates: bad_lbl
asc_node_local_solar_time: 32 bit Real
valid_range: 0.000000000, 24.00000000
long_name: local apparent solar time at the ascending node
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: hours
description: local apparent solar time at the last ascending node before time_coverage_end in hours from midnight
origname: asc_node_local_solar_time
fullnamepath: /asc_node_local_solar_time
antenna_temp_qc: Array of 16 bit Integers [atrack = 0..134][xtrack = 0..95][channel = 0..21]
valid_range: 0, 2
long_name: antenna_temp QC
standard_name: brightness_temperature status_flag
description: antenna_temp QC flag
_FillValue: -1
coverage_content_type: qualityInformation
flag_meanings: Best Good Do_Not_Use
flag_values: 0, 1, 2
origname: antenna_temp_qc
fullnamepath: /antenna_temp_qc
coordinates: lon lat
surf_alt_sdev: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 10000.00000
long_name: surface altitude standard deviation
_FillValue: 9.969209968e+36
coverage_content_type: qualityInformation
units: m
description: standard deviation of surface altitude within the FOV
AIRS_HDF_name: topog_err
cell_methods: area: standard_deviation (beam-weighted)
origname: surf_alt_sdev
fullnamepath: /surf_alt_sdev
coordinates: lon lat
lat_bnds: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][fov_poly = 0..7]
valid_range: -90.00000000, 90.00000000
long_name: FOV boundary latitudes
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degrees_north
description: latitudes of points forming a polygon around the perimeter of the FOV
origname: lat_bnds
fullnamepath: /lat_bnds
band_land_frac: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4]
units: 1
valid_range: 0.000000000, 1.000000000
long_name: band land fraction
standard_name: land_area_fraction
description: band-specific land fraction over the fov
_FillValue: 9.969209968e+36
cell_methods: area: mean (beam-weighted)
coverage_content_type: referenceInformation
origname: band_land_frac
fullnamepath: /band_land_frac
coordinates: band_lbl band_lat band_lon
sun_glint_lon: Array of 32 bit Reals [atrack = 0..134]
valid_range: -180.0000000, 180.0000000
long_name: sun glint longitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: longitude
units: degrees_east
description: sun glint spot longitude at scan_mid_time. Fill for night observations.
AIRS_HDF_name: glintlon
origname: sun_glint_lon
fullnamepath: /sun_glint_lon
coordinates: subsat_lon subsat_lat
chan_band: Array of Strings [channel = 0..21]
long_name: channel band
description: Name of band for each channel
coverage_content_type: auxillaryInformation
origname: chan_band
fullnamepath: /chan_band
utc_tuple_lbl: Array of Strings [utc_tuple = 0..7]
long_name: UTC date/time parts
coverage_content_type: auxiliaryInformation
description: names of the elements of UTC when it is expressed as an array of integers year,month,day,hour,minute,second,millisecond,microsecond
origname: utc_tuple_lbl
fullnamepath: /utc_tuple_lbl
bandwidth: Array of 32 bit Reals [channel = 0..21]
units: MHz
long_name: total bandwidth
description: bandwidth of sum of 1, 2, or 4 channels
_FillValue: 9.969209968e+36
AIRS_HDF_name: bandwidth
coverage_content_type: auxillaryInformation
origname: bandwidth
fullnamepath: /bandwidth
if_offset_2: Array of 32 bit Reals [channel = 0..21]
units: MHz
long_name: second intermediate frequency offset
description: Offset of second intermediate frequency stage (zero for no mixing)
_FillValue: 9.969209968e+36
AIRS_HDF_name: IF_offset_2
coverage_content_type: auxillaryInformation
origname: if_offset_2
fullnamepath: /if_offset_2
attitude_lbl: Array of Strings [attitude = 0..2]
long_name: rotational direction
coverage_content_type: auxiliaryInformation
description: list of rotational directions (roll, pitch, yaw)
origname: attitude_lbl
fullnamepath: /attitude_lbl
asc_node_tai93: 64 bit Real
valid_range: -2934835217.0000000, 3376598410.0000000
long_name: ascending node time
_FillValue: 9.9692099683868690e+36
coverage_content_type: referenceInformation
units: seconds since 1993-01-01 00:00
description: TAI93 time of the last ascending node of spacecraft orbit before time_coverage_end.
AIRS_HDF_name: eq_x_tai
origname: asc_node_tai93
fullnamepath: /asc_node_tai93
land_frac: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 1.000000000
long_name: land fraction
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: land_area_fraction
units: 1
description: land fraction over the FOV
AIRS_HDF_name: landFrac
cell_methods: area: mean (beam-weighted)
origname: land_frac
fullnamepath: /land_frac
coordinates: lon lat
beam_width: Array of 32 bit Reals [channel = 0..21]
units: degree
long_name: Beam width
description: Nominal beam width
_FillValue: 9.969209968e+36
coverage_content_type: auxillaryInformation
origname: beam_width
fullnamepath: /beam_width
sat_sol_azi: Array of 32 bit Reals [atrack = 0..134]
valid_range: 0.000000000, 360.0000000
long_name: satellite solar azimuth
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: solar azimuth angle at the satellite (clockwise from North)
origname: sat_sol_azi
fullnamepath: /sat_sol_azi
coordinates: subsat_lon subsat_lat
solar_beta_angle: 32 bit Real
valid_range: -90.00000000, 90.00000000
long_name: beta angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: Beta angle for the spacecraft orbit, determining the percentage of the orbit that the spacecraft is in direct sunlight.
origname: solar_beta_angle
fullnamepath: /solar_beta_angle
antenna: Array of Strings [channel = 0..21]
long_name: antenna name
description: Name of antenna for each channel
_FillValue: ,
coverage_content_type: auxillaryInformation
origname: antenna
fullnamepath: /antenna
lat: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: -90.00000000, 90.00000000
long_name: latitude
_FillValue: 9.969209968e+36
bounds: lat_bnds
coverage_content_type: referenceInformation
standard_name: latitude
units: degrees_north
description: latitude of FOV center
AIRS_HDF_name: Latitude
origname: lat
fullnamepath: /lat
subsat_lat: Array of 32 bit Reals [atrack = 0..134]
valid_range: -90.00000000, 90.00000000
long_name: sub-satellite latitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: latitude
units: degrees_north
description: sub-satellite latitude at scan_mid_time
AIRS_HDF_name: sat_lat
origname: subsat_lat
fullnamepath: /subsat_lat
surf_alt: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
ancillary_variables: surf_alt_sdev
valid_range: -500.0000000, 10000.00000
long_name: surface altitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: surface_altitude
units: m
description: mean surface altitude wrt earth model over the FOV
AIRS_HDF_name: topog
cell_methods: area: mean (beam-weighted)
origname: surf_alt
fullnamepath: /surf_alt
coordinates: lon lat
polarization: Array of Strings [channel = 0..21]
long_name: Polarization
description: Nominal polarization: Vertical or Horizontal
_FillValue: ,
coverage_content_type: auxillaryInformation
origname: polarization
fullnamepath: /polarization
band_lat_bnds: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4][fov_poly = 0..7]
units: degrees_north
valid_range: -90.00000000, 90.00000000
long_name: band fov boundary latitudes
description: latitudes of points forming a polygon around the perimeter of the band-specific fov
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
origname: band_lat_bnds
fullnamepath: /band_lat_bnds
if_offset_1: Array of 32 bit Reals [channel = 0..21]
units: MHz
long_name: first intermediate frequency offset
description: Offset of first intermediate frequency stage (zero for no mixing)
_FillValue: 9.969209968e+36
AIRS_HDF_name: IF_offset_1
coverage_content_type: auxillaryInformation
origname: if_offset_1
fullnamepath: /if_offset_1
mean_anom_wrt_equat: Array of 32 bit Reals [atrack = 0..134]
valid_range: 0.000000000, 360.0000000
long_name: mean anomaly with respect to the equator
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: spacecraft mean anomaly measured with respect to the ascending node
origname: mean_anom_wrt_equat
fullnamepath: /mean_anom_wrt_equat
coordinates: subsat_lon subsat_lat
band_lon_bnds: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4][fov_poly = 0..7]
units: degrees_east
valid_range: -180.0000000, 180.0000000
long_name: band fov boundary longitudes
description: longitudes of points forming a polygon around the perimeter of the band-specific fov
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
origname: band_lon_bnds
fullnamepath: /band_lon_bnds
band_lat: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][band = 0..4]
units: degrees_north
valid_range: -90.00000000, 90.00000000
long_name: band latitude
standard_name: latitude
description: band-specific fov center latitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
bounds: band_lat_bnds
origname: band_lat
fullnamepath: /band_lat
sat_azi: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 360.0000000
long_name: satellite azimuth angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: sensor_azimuth_angle
units: degree
description: satellite azimuth angle at the center of the spot (clockwise from North)
AIRS_HDF_name: satazi
origname: sat_azi
fullnamepath: /sat_azi
coordinates: lon lat
lat_geoid: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: -90.00000000, 90.00000000
long_name: latitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: latitude
units: degrees_north
description: latitude of FOV center on the geoid (without terrain correction)
origname: lat_geoid
fullnamepath: /lat_geoid
band_lbl: Array of Strings [band = 0..4]
long_name: Band name
standard_name: sensor_band_identifier
description: List of Microwave bands (K, Ka, V, W, G)
coverage_content_type: auxillaryInformation
origname: band_lbl
fullnamepath: /band_lbl
instrument_state: Array of Bytes [atrack = 0..134][xtrack = 0..95]
long_name: instrument state
_FillValue: 255
flag_values: 0, 1, 2, 3
coverage_content_type: qualityInformation
description: instrument/data state: 0/'Process' - Data is usable for science; 1/'Special' - Observations are valid but instrument is not configured for science data (ex: stare mode); 2/'Erroneous' - Data is not usable (ex: checksum error); 3/'Missing' - No data was received.
AIRS_HDF_name: state
flag_meanings: Process Special Erroneous Missing
origname: instrument_state
fullnamepath: /instrument_state
coordinates: lon lat
center_freq: Array of 32 bit Reals [channel = 0..21]
units: MHz
long_name: channel center frequency
standard_name: sensor_band_central_radiation_frequency
description: Channel center frequency
_FillValue: 9.969209968e+36
AIRS_HDF_name: center_freq
coverage_content_type: auxillaryInformation
origname: center_freq
fullnamepath: /center_freq
spatial_lbl: Array of Strings [spatial = 0..2]
long_name: spatial direction
coverage_content_type: auxiliaryInformation
description: list of spatial directions (X, Y, Z)
origname: spatial_lbl
fullnamepath: /spatial_lbl
warm_nedt: Array of 32 bit Reals [channel = 0..21]
units: Kelvin
valid_range: 0.001000000047, 100.0000000
long_name: warm NEdT
description: Noise equivalent delta temperature derived from observations of the warm calibration target
_FillValue: 9.969209968e+36
AIRS_HDF_name: NeDT
coverage_content_type: qualityInformation
origname: warm_nedt
fullnamepath: /warm_nedt
sat_sol_zen: Array of 32 bit Reals [atrack = 0..134]
valid_range: 0.000000000, 180.0000000
long_name: satellite solar zenith
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degree
description: solar zenith angle at the satellite
origname: sat_sol_zen
fullnamepath: /sat_sol_zen
coordinates: subsat_lon subsat_lat
cold_nedt: Array of 32 bit Reals [channel = 0..21]
units: Kelvin
valid_range: 0.001000000047, 100.0000000
long_name: cold NEdT
description: Noise equivalent delta temperature derived from observations of cold space
_FillValue: 9.969209968e+36
coverage_content_type: qualityInformation
origname: cold_nedt
fullnamepath: /cold_nedt
lon_geoid: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: -180.0000000, 180.0000000
long_name: longitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: longitude
units: degrees_east
description: longitude of FOV center on the geoid (without terrain correction)
origname: lon_geoid
fullnamepath: /lon_geoid
obs_id: Array of Strings [atrack = 0..134][xtrack = 0..95]
long_name: earth view observation id
coverage_content_type: referenceInformation
description: unique earth view observation identifier: yyyymmddThhmm.aa[a]Exx . Includes gran_id plus two- or three-digit along-track index (01-45 or 001-135) and 2-digit cross-track index (01-96).
origname: obs_id
fullnamepath: /obs_id
view_ang: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 180.0000000
long_name: view angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: sensor_view_angle
units: degree
description: off nadir pointing angle
AIRS_HDF_name: scanang
origname: view_ang
fullnamepath: /view_ang
coordinates: lon lat
local_solar_time: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 24.00000000
long_name: local apparent solar time
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: hours
description: local apparent solar time in hours from midnight
origname: local_solar_time
fullnamepath: /local_solar_time
coordinates: lon lat
lon_bnds: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][fov_poly = 0..7]
valid_range: -180.0000000, 180.0000000
long_name: FOV boundary longitudes
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: degrees_east
description: longitudes of points forming a polygon around the perimeter of the FOV
origname: lon_bnds
fullnamepath: /lon_bnds
sat_zen: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95]
valid_range: 0.000000000, 180.0000000
long_name: satellite zenith angle
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: sensor_zenith_angle
units: degree
description: satellite zenith angle at the center of the spot
AIRS_HDF_name: satzen
origname: sat_zen
fullnamepath: /sat_zen
coordinates: lon lat
aux_cold_temp: Array of 32 bit Reals [atrack = 0..134][channel = 0..21]
units: Kelvin
long_name: cold space temperature
description: Effective temperature of cold calibration view (space) (Tcc)
_FillValue: 9.969209968e+36
coverage_content_type: auxillaryInformation
origname: cold_temp
fullnamepath: /aux/cold_temp
coordinates: aux_subsat_lon aux_subsat_lat
aux_nonlin: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][channel = 0..21]
units: Kelvin
valid_range: 0.000000000, 400.0000000
long_name: nonlinearity correction
description: Nonlinearity correction used in calibrating earth scene brightness temps.
_FillValue: 9.969209968e+36
AIRS_HDF_name: cal_coef_a2
coverage_content_type: auxillaryInformation
origname: nonlin
fullnamepath: /aux/nonlin
coordinates: aux_lon aux_lat
aux_offset: Array of 32 bit Reals [atrack = 0..134][channel = 0..21]
units: Kelvin
long_name: calibration offset
description: Offset used in calibrating earth scene brightness temps.
_FillValue: 9.969209968e+36
AIRS_HDF_name: cal_coef_a0
coverage_content_type: auxillaryInformation
origname: offset
fullnamepath: /aux/offset
coordinates: aux_subsat_lon aux_subsat_lat
aux_cal_blackbody_qualflag: Array of 32 bit Integers [atrack = 0..134][channel = 0..21]
long_name: blackbody calibration quality flags
description: (Bit 32 is most significant. It is not used because it can cause confusion when this flag is used as a signed or unsigned integer.) Bit 3: Insufficient valid black body (warm calibration) observation counts to produce a scan-specific calibration. Scan may still be calibrated using coefficients from another scan. (warm_cal_bad) Bit 2: Insufficient valid black body temperature readings to produce a scan-specific calibration. Scan may still be calibrated using coefficients from another scan. (bb_temp_bad) Bit 1 (LSB): This scan's black body view not used. A scan-specific calibration may still be calculated using black body views from neighboring scans. (bb_bad)
_FillValue: -2147483647
coverage_content_type: qualityInformation
flag_meanings: bb_bad bb_temp_bad warm_cal_bad
flag_masks: 1, 2, 4
origname: cal_blackbody_qualflag
fullnamepath: /aux/cal_blackbody_qualflag
coordinates: aux_subsat_lon aux_subsat_lat
aux_cal_space_qualflag: Array of 32 bit Integers [atrack = 0..134][channel = 0..21]
long_name: space view calibration quality flags
description: (Bit 32 is most significant. It is not used because it can cause confusion when this flag is used as a signed or unsigned integer.) Bit 14 : Insufficient valid space (cold calibration) observation counts to produce a scan-specific calibration. Scan may still be calibrated using coefficients from another scan. (cold_cal_bad) Bit 13: Insufficient effective space temperature values to produce a scan-specific calibration. Scan may still be calibrated using coefficients from another scan. (space_temp_bad) Bit 12: This scan's space view #1 not used because of lunar intrusion or other problem. A scan-specific calibration may still be calculated using space views from neighboring views and scans. (sv1_bad) Bit 11: This scan's space view #2 not used because of lunar intrusion or other problem. A scan-specific calibration may still be calculated using space views from neighboring views and scans. (sv2_bad) Bit 10 : This scan's space view #3 not used because of lunar intrusion or other problem. A scan-specific calibration may still be calculated using space views from neighboring views and scans. (sv3_bad) Bit 9 : This scan's space view #4 not used because of lunar intrusion or other problem. A scan-specific calibration may still be calculated using space views from neighboring views and scans. (sv4_bad) Bit 8: Missing moon angle for this scan's space view #1. Lunar intrusion status is unknown. (sv1_moon_unknown) Bit 7: Missing moon angle for this scan's space view #2. Lunar intrusion status is unknown. (sv2_moon_unknown) Bit 6: Missing moon angle for this scan's space view #3. Lunar intrusion status is unknown. (sv3_moon_unknown) Bit 5: Missing moon angle for this scan's space view #4. Lunar intrusion status is unknown. (sv4_moon_unknown) Bits 1-4: reserved (0)
_FillValue: -2147483647
coverage_content_type: qualityInformation
flag_meanings: sv4_moon_unknown sv3_moon_unknown sv2_moon_unknown sv1_moon_unknown sv4_bad sv3_bad sv2_bad sv1_bad space_temp_bad cold_cal_bad
flag_masks: 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192
origname: cal_space_qualflag
fullnamepath: /aux/cal_space_qualflag
coordinates: aux_subsat_lon aux_subsat_lat
aux_cal_qualflag: Array of 32 bit Integers [atrack = 0..134][channel = 0..21]
long_name: calibration quality flags
description: (Bit 32 is most significant. It is not used because it can cause confusion when this flag is used as a signed or unsigned integer.) Bit 7 : No usable calibration. Scan is not calibrated. (cal_failed) Bit 6 : Calibration values used from different scan. (cal_from_diff_scan) Bit 5: Insufficient valid shelf temperature values to use in a scan calibration. Fall-back constant shelf temperatures are used. (shelf_temp_bad) Bit 4: Excess noise (noise) Bit 3: Telemetry out of limits (telem) Bit 2: Spectral quality is poor (spectral) Bit 1 (LSB): reserved (0)
_FillValue: -2147483647
coverage_content_type: qualityInformation
flag_meanings: spectral telem noise shelf_temp_bad cal_from_diff_scan cal_failed
flag_masks: 2, 4, 8, 16, 32, 64
origname: cal_qualflag
fullnamepath: /aux/cal_qualflag
coordinates: aux_subsat_lon aux_subsat_lat
aux_geo_qualflag: Array of 32 bit Integers [atrack = 0..134][xtrack = 0..95]
long_name: geolocation quality
description: Bit 7 - Failed geolocation on Earth topographic surface (surface_loc) Bit 6 - Could not set FOV surface elevations and land water fraction (DEM) Bit 5 - Failed geolocation on Earth geoid (geoid_loc) Bit 4 - Failed to set solar zenith or azimuth angles (solar_ang) Bit 3 - Failed to set spacecraft zenith or azimuth angles (spacecraft_ang) Bit 2 - Unused (0) Bit 1 (LSB) - Failed geolocation of some bands (band_specific)
_FillValue: -2147483647
coverage_content_type: qualityInformation
flag_meanings: surface_loc DEM geoid_loc solar_ang spacecraft_ang band_specific
flag_masks: 64, 32, 16, 8, 4, 1
origname: geo_qualflag
fullnamepath: /aux/geo_qualflag
aux_warm_temp: Array of 32 bit Reals [atrack = 0..134][channel = 0..21]
units: Kelvin
long_name: warm calibration temperature
description: Effective temperature of warm calibration view (black body) (Twc)
_FillValue: 9.969209968e+36
coverage_content_type: auxillaryInformation
origname: warm_temp
fullnamepath: /aux/warm_temp
coordinates: aux_subsat_lon aux_subsat_lat
aux_gain: Array of 32 bit Reals [atrack = 0..134][channel = 0..21]
units: Count/Kelvin
long_name: calibration gain
description: Gain factor used in calibrating earth scene brightness temps.
_FillValue: 9.969209968e+36
AIRS_HDF_name: cal_coef_a1
coverage_content_type: auxillaryInformation
origname: gain
fullnamepath: /aux/gain
coordinates: aux_subsat_lon aux_subsat_lat
antenna_temp: Array of 32 bit Reals [atrack = 0..134][xtrack = 0..95][channel = 0..21]
units: Kelvin
ancillary_variables: antenna_temp_qc
valid_range: 0.000000000, 400.0000000
long_name: antenna temperature
standard_name: brightness_temperature
description: Calibrated scene brightness temperature for each ATMS channel and beam position. This output is the Rayleigh equivalent temperature and not the Planck blackbody equivalent temperature
_FillValue: 9.969209968e+36
AIRS_HDF_name: antenna_temp
coverage_content_type: physicalMeasurement
origname: antenna_temp
fullnamepath: /antenna_temp
coordinates: lon lat
sat_alt: Array of 32 bit Reals [atrack = 0..134]
valid_range: 100000.0000, 1000000.000
long_name: satellite altitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: altitude
units: m
description: satellite altitude with respect to earth model at scan_mid_time
AIRS_HDF_name: satheight
origname: sat_alt
fullnamepath: /sat_alt
coordinates: subsat_lon subsat_lat
asc_flag: Array of Bytes [atrack = 0..134]
valid_range: 0, 1
long_name: ascending orbit flag
_FillValue: 255
flag_values: 0, 1
coverage_content_type: referenceInformation
description: ascending orbit flag: 1 if ascending, 0 descending
AIRS_HDF_name: scan_node_type
flag_meanings: descending ascending
origname: asc_flag
fullnamepath: /asc_flag
coordinates: subsat_lon subsat_lat
sun_glint_lat: Array of 32 bit Reals [atrack = 0..134]
valid_range: -90.00000000, 90.00000000
long_name: sun glint latitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: latitude
units: degrees_north
description: sun glint spot latitude at scan_mid_time. Fill for night observations.
AIRS_HDF_name: glintlat
origname: sun_glint_lat
fullnamepath: /sun_glint_lat
coordinates: subsat_lon subsat_lat
subsat_lon: Array of 32 bit Reals [atrack = 0..134]
valid_range: -180.0000000, 180.0000000
long_name: sub-satellite longitude
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
standard_name: longitude
units: degrees_east
description: sub-satellite longitude at scan_mid_time
AIRS_HDF_name: sat_lon
origname: subsat_lon
fullnamepath: /subsat_lon
sat_vel: Array of 32 bit Reals [atrack = 0..134][spatial = 0..2]
long_name: satellite velocity
_FillValue: 9.969209968e+36
coverage_content_type: referenceInformation
units: m s-1
description: satellite ECR velocity at scan_mid_time
origname: sat_vel
fullnamepath: /sat_vel
coordinates: subsat_lon subsat_lat spatial_lbl
atrack: Array of 32 bit Reals [atrack = 0..134]
attitude: Array of 32 bit Reals [attitude = 0..2]
band: Array of 32 bit Reals [band = 0..4]
channel: Array of 16 bit Unsigned integers [channel = 0..21]
units: 1
long_name: channel number
description: Number for each channel (1-22)
_FillValue: 65535
AIRS_HDF_name: Channel
coverage_content_type: auxillaryInformation
origname: channel
fullnamepath: /channel
fov_poly: Array of 32 bit Reals [fov_poly = 0..7]
spacextrack: Array of 32 bit Reals [spacextrack = 0..3]
spatial: Array of 32 bit Reals [spatial = 0..2]
utc_tuple: Array of 32 bit Reals [utc_tuple = 0..7]
xtrack: Array of 32 bit Reals [xtrack = 0..95]