N: 90 S: -90 E: 180 W: -180
Description
This L3 Spectral Outgoing Longwave Radiation (OLR) is derived using the AIRS radiances to compute spectral fluxes based on an algorithm developed by Xianglei Huang at the University of Michigan. It uses data from the Atmospheric InfraRed Sounder (AIRS) instrument on the EOS-Aqua spacecraft.
The Aqua AIRS Huang Level-3 Spectral OLR product contains OLR parameters derived from the AIRS version 6 data: all-sky and clear-sky OLR both spectrally resolved at 10 cm-1 bandwidth and integrated to a single value per grid square. This is monthly product on a 2x2 degree latitude/longitude grid.
Product Summary
Citation
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READ-ME
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor | Offset |
|---|---|---|---|---|---|---|---|
| lat | Degrees latitude | degrees_north | float32 | 9.9692099683869E+36 | -90 to 90 | N/A | N/A |
| lat_bnds | min and max degrees for each longitude grid cell | degrees_north | float32 | 9.9692099683869E+36 | -90 to 90 | N/A | N/A |
| lon | Degrees longitude | degrees_east | float32 | 9.9692099683869E+36 | -180 to 180 | N/A | N/A |
| lon_bnds | min and max degrees for each longitude grid cell | degrees_east | float32 | 9.9692099683869E+36 | -180 to 180 | N/A | N/A |
| nobs/nobs_max | Maximum number of observations including those for which no value was retrieved | 1 | int32 | -2147483647 | N/A | N/A | N/A |
| nobs/olr_clr_nobs | olr_clr number of observations | 1 | int32 | -2147483647 | N/A | N/A | N/A |
| nobs/olr_clr_spectral_nobs | olr_clr_spectral number of observations | 1 | int32 | -2147483647 | N/A | N/A | N/A |
| nobs/olr_nobs | olr number of observations | 1 | int32 | -2147483647 | N/A | N/A | N/A |
| nobs/olr_spectral_nobs | olr_spectral number of observations | 1 | int32 | -2147483647 | N/A | N/A | N/A |
| obs_time_tai93 | Nominal midtime for observations included in grid | seconds since 1993-01-01 00:00 | float64 | 9.9692099683869E+36 | -2934835217 to 3376598410 | N/A | N/A |
| obs_time_tai93_bnds | Nominal start and end time for observations included in grid | seconds since 1993-01-01 00:00 | float64 | 9.9692099683869E+36 | -2934835217 to 3376598410 | N/A | N/A |
| obs_time_utc | Nominal midtime for observations included in grid as an array of integers: year, month, day, hour, minute, second, millisec, microsec | N/A | uint16 | 65535 | N/A | N/A | N/A |
| olr | outgoing longwave radiation flux integrated over 2 to 2800 cm-1 | W / m2 | float32 | 9.9692099683869E+36 | 1 to 2000 | N/A | N/A |
| olr_clr | outgoing longwave radiation flux integrated over 2 to 2800 cm-1 where clear-sky | W / m2 | float32 | 9.9692099683869E+36 | 1 to 2000 | N/A | N/A |
| olr_clr_spectral | Outgoing longwave radiation flux per 10 cm-1 where clear-sky | W / m2 | float32 | 9.9692099683869E+36 | 0.0010000000474975 to 2000 | N/A | N/A |
| olr_spectral | All-sky outgoing longwave radiation flux per 10 cm-1 | W / m2 | float32 | 9.9692099683869E+36 | 0.0010000000474975 to 2000 | N/A | N/A |
| orbit_pass | Nominal solar time when the spacecraft passes over the equator. Orbit pass bounds are defined by closest approach of the spacecraft to the poles. | hours | float32 | 9.9692099683869E+36 | 0 to 24 | N/A | N/A |
| utc_tuple_lbl | names of the elements of UTC when it is expressed as an array of integers year,month,day,hour,minute,second,millisecond,microsecond | N/A | string | N/A | N/A | N/A | N/A |
| wnum | OLR wavenumber band centers | cm-1 | float32 | 9.9692099683869E+36 | N/A | N/A | N/A |
| wnum_bnds | min and max wavenumbers of each OLR band | cm-1 | float32 | 9.9692099683869E+36 | N/A | N/A | N/A |