SOLab product specification
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== Product design == | == Product design == | ||
| - | Given: <blockquote>lat, lon, time, | + | Given: <blockquote>lat, lon, time, 6 parameters: Q – water vapor, W – cloud liquid, Vhf – wind speed (high frequency algorithm), Vlf – wind speed (low frequency algorithm), T – temperature, tau - atmospheric absorption at 10.65 GHz. This is for one swath, and we have 14 ascending and 14 descending swaths per day. Time is for a scan, pixels in scan are always 196, number of scans per swath is about 2000 and this varies from swath to swath.</blockquote> |
=== Product ID === | === Product ID === | ||
| Line 105: | Line 105: | ||
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* long_name: time | * long_name: time | ||
| - | * units: s | + | * units: s since 1993-01-01 00:00:0.0 |
* standard_name: time | * standard_name: time | ||
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| Line 141: | Line 141: | ||
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* long_name: sea surface temperature | * long_name: sea surface temperature | ||
| - | * units: | + | * units: degree of Celcium |
* standard_name: sea surface temperature | * standard_name: sea surface temperature | ||
* scale_factor: | * scale_factor: | ||
Revision as of 12:16, 5 June 2013
Current document describes the format of the new product. Please also refer to the short summary of the CF convention prepared from the original source CF convention.
Contents |
Product design
Given:
lat, lon, time, 6 parameters: Q – water vapor, W – cloud liquid, Vhf – wind speed (high frequency algorithm), Vlf – wind speed (low frequency algorithm), T – temperature, tau - atmospheric absorption at 10.65 GHz. This is for one swath, and we have 14 ascending and 14 descending swaths per day. Time is for a scan, pixels in scan are always 196, number of scans per swath is about 2000 and this varies from swath to swath.
Product ID
SOLAB_AMSRE_L2_NN
<VENDOR_ID>_<INSTRUMENT_ID>_<PRODUCT_LEVEL>_<ALGORITHM>
Filename
There are several patterns for filename convention. For example, all ASCAT files use next convention:
<INSTRUMENT_ID>_<PRODUCT_TYPE>_<PROCESSING_LEVEL>_<SPACECRAFT_ID>_ _<SENSING_START>_<SENSING_END>_<PROCESSING_MODE>_<DISPOSITION_MODE>_<PROCESSING_ TIME>
Therefore, filename format of the developing SOLab product may use the next convention
SOLAB_AMSRE_L2_NN_yyyymmdd_nnn_i_vv.nc
- yyyymmdd- year, month and day
- nnn - orbit number
- i - orbit node: A or D
- vv - version (v1, v2...)
NetCDF structure
Header
| Attribute | Value |
|---|---|
| NC_GLOBAL.title | full product name |
| NC_GLOBAL.title_short_name | product identifier |
| NC_GLOBAL.institution | SOLAB/RSHU |
| NC_GLOBAL.source | satellite AMSR-E |
| NC_GLOBAL.history | N/A |
| NC_GLOBAL.references | html page with product specification, should be on SOLab website |
| NC_GLOBAL.comment | |
| NC_GLOBAL.Conventions | CF-1.6 |
| NC_GLOBAL.pixel_size_on_horizontal | 10km |
| NC_GLOBAL.processing_level | L2 |
| NC_GLOBAL.granule_name | variable |
| NC_GLOBAL.start_date | variable |
| NC_GLOBAL.start_time | variable |
| NC_GLOBAL.stop_date | variable |
| NC_GLOBAL.stop_time | variable |
| NC_GLOBAL.creation_date | variable |
| NC_GLOBAL.creation_time | variable |
Variables
| Variable | Attributes |
|---|---|
| latitude |
|
| longitude |
|
| time |
|
| atmosphere_water_vapor_content |
|
| atmosphere_cloud_liquid_water_content |
|
| wind_speed |
|
| sea_surface_temperature |
|
