SOLab product specification

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Revision as of 14:15, 27 May 2013 (view source) Ilya (Talk | contribs) m (→Product ID) ← Older edit		Revision as of 14:18, 27 May 2013 (view source) Ilya (Talk | contribs) m (→Variables) Newer edit →
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	* add_offset:		* add_offset:
	* _FillValue:		* _FillValue:
		+	* coordinates: latitude longitude
	|-		|-
	|atmosphere_cloud_liquid_water_content		|atmosphere_cloud_liquid_water_content
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	* add_offset:		* add_offset:
	* _FillValue:		* _FillValue:
		+	* coordinates: latitude longitude
	|-		|-
	|wind_speed		|wind_speed
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	* add_offset:		* add_offset:
	* _FillValue:		* _FillValue:
		+	* coordinates: latitude longitude
	|-		|-
	|sea_surface_temperature		|sea_surface_temperature
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	* add_offset:		* add_offset:
	* _FillValue:		* _FillValue:
		+	* coordinates: latitude longitude
	|}		|}

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Revision as of 14:18, 27 May 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 1 Product design 1.1 Product ID 1.2 Filename 1.3 NetCDF structure 1.3.1 Header 1.3.2 Variables

Product design

Given:

lat, lon, time, 4 parameters: Q – water vapor, W – cloud liquid, V – wind speed, T – temperature. 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_?

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_yyyymmdd_vv.nc

• yyyymmdd- year, month and day
• 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	long_name: latitude units: degrees_north standard_name: latitude
longitude	long_name: longitude units: degrees_east standard_name: longitude
time	long_name: time units: s standard_name: time
atmosphere_water_vapor_content	long_name: units: kg m-2 standard_name: scale_factor: add_offset: _FillValue: coordinates: latitude longitude
atmosphere_cloud_liquid_water_content	long_name: units: kg m-2 standard_name: scale_factor: add_offset: _FillValue: coordinates: latitude longitude
wind_speed	long_name: wind speed units: m s-2 standard_name: wind speed scale_factor: add_offset: _FillValue: coordinates: latitude longitude
sea_surface_temperature	long_name: sea surface temperature units: K standard_name: sea surface temperature scale_factor: add_offset: _FillValue: coordinates: latitude longitude