SOLab product specification

From

Revision as of 11:35, 4 June 2013 by Liza (Talk | contribs)
Jump to: navigation, search

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

[hide]

Product design

Given:

lat, lon, time, 5 parameters: Q – water vapor, W – cloud liquid, V – wind speed, 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
  • 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
Personal tools
MediaWiki Appliance - Powered by TurnKey Linux