obs_id[
obs=
0
..12149]
(Type is String)
-
attributes
-
long_name:
observation id
-
coverage_content_type:
referenceInformation
-
description:
unique earth view observation identifier.
obs_time_tai93[
obs=
0
..12149]
(Type is Float64)
-
attributes
-
valid_range:
-2934835217.000000, 3376598410.000000
-
long_name:
earth view FOV midtime
-
_FillValue:
9.969209968386869e+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
obs_time_utc[
obs=
0
..12149]
[
utc_tuple=
0
..7]
(Type is UInt16)
-
attributes
-
long_name:
earth view UTC FOV time
-
coordinates:
utc_tuple_lbl
-
_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
lat[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-90.0000000, 90.0000000
-
long_name:
latitude
-
_FillValue:
9.96920997e+36
-
bounds:
lat_bnds
-
coverage_content_type:
referenceInformation
-
standard_name:
latitude
-
units:
degrees_north
-
description:
latitude of FOV center
-
AIRS_HDF_name:
Latitude
lon[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-180.000000, 180.000000
-
long_name:
FOV longitude
-
_FillValue:
9.96920997e+36
-
bounds:
lon_bnds
-
coverage_content_type:
referenceInformation
-
standard_name:
longitude
-
units:
degrees_east
-
description:
longitude of FOV center
-
AIRS_HDF_name:
Longitude
lat_bnds[
obs=
0
..12149]
[
fov_poly=
0
..7]
(Type is Float32)
-
attributes
-
valid_range:
-90.0000000, 90.0000000
-
long_name:
FOV boundary latitudes
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
units:
degrees_north
-
description:
latitudes of points forming a polygon around the perimeter of the FOV
lon_bnds[
obs=
0
..12149]
[
fov_poly=
0
..7]
(Type is Float32)
-
attributes
-
valid_range:
-180.000000, 180.000000
-
long_name:
FOV boundary longitudes
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
units:
degrees_east
-
description:
longitudes of points forming a polygon around the perimeter of the FOV
land_frac[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 1.00000000
-
long_name:
land fraction
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+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)
surf_alt[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
ancillary_variables:
surf_alt_sdev
-
valid_range:
-500.000000, 10000.0000
-
long_name:
surface altitude
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+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)
surf_alt_sdev[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 10000.0000
-
long_name:
surface altitude standard deviation
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+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)
sun_glint_lat[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-90.0000000, 90.0000000
-
long_name:
sun glint latitude
-
coordinates:
subsat_lon subsat_lat
-
_FillValue:
9.96920997e+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
sun_glint_lon[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-180.000000, 180.000000
-
long_name:
sun glint longitude
-
coordinates:
subsat_lon subsat_lat
-
_FillValue:
9.96920997e+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
sol_zen[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 180.000000
-
long_name:
solar zenith angle
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
solar_zenith_angle
-
units:
degree
-
description:
solar zenith angle at the center of the FOV
-
AIRS_HDF_name:
solzen
sol_azi[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 360.000000
-
long_name:
solar azimuth angle
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
solar_azimuth_angle
-
units:
degree
-
description:
solar azimuth angle at the center of the FOV (clockwise from North)
-
AIRS_HDF_name:
solazi
sun_glint_dist[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 30000000.0
-
long_name:
sun glint distance
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+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
view_ang[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 180.000000
-
long_name:
view angle
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
sensor_view_angle
-
units:
degree
-
description:
off nadir pointing angle
-
AIRS_HDF_name:
scanang
sat_zen[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 180.000000
-
long_name:
satellite zenith angle
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
sensor_zenith_angle
-
units:
degree
-
description:
satellite zenith angle at the center of the FOV
-
AIRS_HDF_name:
satzen
sat_azi[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 360.000000
-
long_name:
satellite azimuth angle
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
sensor_azimuth_angle
-
units:
degree
-
description:
satellite azimuth angle at the center of the FOV (clockwise from North)
-
AIRS_HDF_name:
satazi
sat_range[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
100000.000, 10000000.0
-
long_name:
satellite range
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
units:
m
-
description:
line of sight distance between satellite and FOV center
asc_flag[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
valid_range:
0, 1
-
long_name:
ascending orbit flag
-
coordinates:
subsat_lon subsat_lat
-
_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
subsat_lat[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-90.0000000, 90.0000000
-
long_name:
sub-satellite latitude
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
latitude
-
units:
degrees_north
-
description:
sub-satellite latitude at scan_mid_time
-
AIRS_HDF_name:
sat_lat
subsat_lon[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
-180.000000, 180.000000
-
long_name:
sub-satellite longitude
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
standard_name:
longitude
-
units:
degrees_east
-
description:
sub-satellite longitude at scan_mid_time
-
AIRS_HDF_name:
sat_lon
scan_mid_time[
obs=
0
..12149]
(Type is Float64)
-
attributes
-
valid_range:
-2934835217.000000, 3376598410.000000
-
long_name:
midscan TAI93
-
coordinates:
subsat_lon subsat_lat
-
_FillValue:
9.969209968386869e+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
sat_alt[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
100000.000, 1000000.00
-
long_name:
satellite altitude
-
coordinates:
subsat_lon subsat_lat
-
_FillValue:
9.96920997e+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
local_solar_time[
obs=
0
..12149]
(Type is Float32)
-
attributes
-
valid_range:
0.00000000, 24.0000000
-
long_name:
local apparent solar time
-
coordinates:
lon lat
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
referenceInformation
-
units:
hours
-
description:
local apparent solar time in hours from midnight
utc_tuple_lbl[
utc_tuple=
0
..7]
(Type is String)
-
attributes
-
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
rad[
obs=
0
..12149]
[
wnum=
0
..1678]
(Type is Float32)
-
attributes
-
units:
mW/(m2 sr cm-1)
-
ancillary_variables:
rad_qc synth_frac chan_qc
-
long_name:
spectral radiance
-
standard_name:
toa_outgoing_radiance_per_unit_wavenumber
-
coordinates:
lon lat
-
description:
spectral radiance
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
physicalMeasurement
rad_qc[
obs=
0
..12149]
(Type is Int16)
-
attributes
-
valid_range:
0, 2
-
long_name:
rad QC
-
standard_name:
toa_outgoing_radiance_per_unit_wavenumber status_flag
-
coordinates:
lon lat
-
description:
rad QC flag
-
_FillValue:
-1
-
coverage_content_type:
qualityInformation
-
flag_meanings:
Best Good Do_Not_Use
-
flag_values:
0, 1, 2
synth_frac[
wnum=
0
..1678]
(Grid of Float32 values)
-
attributes
-
units:
1
-
valid_range:
0.00000000, 1.00000000
-
long_name:
Fraction synthesized
-
description:
File mean fraction of signal that is attributed to synthesized AIRS Level-1C values
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
qualityInformation
chan_qc[
wnum=
0
..1678]
(Grid of Int16 values)
-
attributes
-
valid_range:
0, 2
-
long_name:
Channel QC
-
standard_name:
toa_outgoing_radiance_per_unit_wavenumber status_flag
-
description:
Quality of each channel.
-
_FillValue:
-1
-
coverage_content_type:
qualityInformation
-
flag_meanings:
Best Good Do_Not_Use
-
flag_values:
0, 1, 2
nedn[
fov=
0
..8]
[
wnum=
0
..1678]
(Type is Float32)
-
attributes
-
units:
mW/(m2 sr cm-1)
-
long_name:
noise equivalent differential radiance
-
description:
noise equivalent differential radiance
-
_FillValue:
9.96920997e+36
-
coverage_content_type:
qualityInformation
atrack[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
units:
1
-
valid_range:
1, 45
-
long_name:
Along-track FOR index
-
coordinates:
lon lat
-
axis:
Y
-
description:
Along-track index of Field Of Regard
-
_FillValue:
255
-
coverage_content_type:
auxiliaryInformation
xtrack[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
units:
1
-
valid_range:
1, 30
-
long_name:
Cross-track FOR index
-
coordinates:
lon lat
-
axis:
X
-
description:
Cross-track index of Field Of Regard
-
_FillValue:
255
-
coverage_content_type:
auxiliaryInformation
fov_num[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
units:
1
-
valid_range:
1, 9
-
long_name:
Field Of View number
-
coordinates:
lon lat
-
description:
Field Of View number in FOR
-
_FillValue:
255
-
coverage_content_type:
auxiliaryInformation
airs_atrack[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
units:
1
-
valid_range:
1, 135
-
long_name:
Along-track AIRS FOV index
-
coordinates:
lon lat
-
axis:
Y
-
description:
AIRS-like along-track index of Field Of View
-
_FillValue:
255
-
coverage_content_type:
auxiliaryInformation
airs_xtrack[
obs=
0
..12149]
(Type is Byte)
-
attributes
-
units:
1
-
valid_range:
1, 90
-
long_name:
Cross-track AIRS FOV index
-
coordinates:
lon lat
-
axis:
X
-
description:
AIRS-like cross-track index of Field Of View
-
_FillValue:
255
-
coverage_content_type:
auxiliaryInformation
wnum[
wnum=
0
..1678]
(Type is Float64)
-
attributes
-
units:
cm-1
-
valid_range:
640.0000000000000, 2700.000000000000
-
long_name:
wavenumber
-
standard_name:
sensor_band_central_radiation_wavenumber
-
description:
wavenumber
-
_FillValue:
9.969209968386869e+36
-
coverage_content_type:
auxiliaryInformation