N: 90 S: -90 E: 180 W: -180
Description
The TROPESS CrIS-SNPP L2 Carbon Monoxide for Forward Stream, Summary Product contains the vertical distribution of the retrieved atmospheric state of carbon monoxide (CO), and formal uncertainties measured by the CrIS instrument on the Suomi-NPP satellite. The forward stream standard product is global for the time period from 2021-02-01 to 2021-05-21, when the CrIS-SNPP processing was discontinued. The NASA TRopospheric Ozone and Precursors from Earth System Sounding (TROPESS) project, uses an optimal estimation algorithm, known as the MUlti-SpEctra, MUlti-SpEcies, Multi-SEnsors (MUSES).
The data files are written in the netCDF version 4 file format, and each file contains one day of data. The data have a spatial resolution of 14 km (CrIS nadir FOV), and are reported at 14 vertical levels from the surface to 0.1 hPa. The principal investigator for the TROPESS project is Kevin W. Bowman.
Product Summary
Citation
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Documents
USER'S GUIDE
READ-ME
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
GENERAL DOCUMENTATION
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 |
|---|---|---|---|---|---|---|
| ak_col | ak_col | mol m-2 | float32 | -999 | N/A | N/A |
| ak_x_col | ak_x_col | 1 | float32 | -999 | N/A | N/A |
| altitude | altitude | m | float32 | -999 | N/A | N/A |
| col | col | mol m-2 | float32 | -999 | N/A | N/A |
| col_dry_air | col_dry_air | mol m-2 | float32 | -999 | N/A | N/A |
| col_error | col_error | mol m-2 | float32 | -999 | N/A | N/A |
| datetime_utc | datetime_utc | 1 | int32 | -999 | N/A | N/A |
| geolocation/cris_atrack | geolocation/cris_atrack | 1 | int32 | -999 | N/A | N/A |
| geolocation/cris_fov | geolocation/cris_fov | 1 | int32 | -999 | N/A | N/A |
| geolocation/cris_granule | geolocation/cris_granule | 1 | int32 | -999 | N/A | N/A |
| geolocation/cris_view_ang | geolocation/cris_view_ang | degree | float32 | -999 | N/A | N/A |
| geolocation/cris_xtrack | geolocation/cris_xtrack | 1 | int32 | -999 | N/A | N/A |
| geophysical/day_night_flag | geophysical/day_night_flag | N/A | int32 | -999 | N/A | N/A |
| geophysical/land_flag | geophysical/land_flag | N/A | int32 | -999 | N/A | N/A |
| h2o_col | h2o_col | mol m-2 | float32 | -999 | N/A | N/A |
| latitude | latitude | degrees_north | float32 | -999 | N/A | N/A |
| longitude | longitude | degrees_east | float32 | -999 | N/A | N/A |
| pressure | pressure | hPa | float32 | -999 | N/A | N/A |
| pwf_col | pwf_col | 1 | float32 | -999 | N/A | N/A |
| target_id | target_id | 1 | int64 | -999 | N/A | N/A |
| time | time | seconds since 1993-01-01 00:00:00 | float64 | -999 | N/A | N/A |
| x | x | 1 | float32 | -999 | N/A | N/A |
| xa | xa | 1 | float32 | -999 | N/A | N/A |
| x_col | x_col | 1e-9 | float32 | -999 | N/A | N/A |
| x_col_error | x_col_error | 1e-9 | float32 | -999 | N/A | N/A |
| year_fraction | year_fraction | year | float64 | -999 | N/A | N/A |