SOLab product specification

2013-06-05T12:16:03Z

Liza: /* Product design */

Current document describes the format of the new product. Please also refer to the [[NetCDF_format_specification|short summary]] of the CF convention prepared from the original source [http://cf-pcmdi.llnl.gov/documents/cf-standard-names/guidelines CF convention].

== Product design ==
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 ===

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:
<blockquote>
<INSTRUMENT_ID>_<PRODUCT_TYPE>_<PROCESSING_LEVEL>_<SPACECRAFT_ID>_
_<SENSING_START>_<SENSING_END>_<PROCESSING_MODE>_<DISPOSITION_MODE>_<PROCESSING_ TIME>
</blockquote>

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 ====
{| border="1" cellpadding="20" cellspacing="0"
!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 ====
{| border="1" cellpadding="20" cellspacing="0"
!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 since 1993-01-01 00:00:0.0
* 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: degree of Celcium
* standard_name: sea surface temperature
* scale_factor:
* add_offset:
* _FillValue:
* coordinates: latitude longitude
|}

SOLab product specification

2013-06-04T11:35:22Z

Liza: /* Product design */

Current document describes the format of the new product. Please also refer to the [[NetCDF_format_specification|short summary]] of the CF convention prepared from the original source [http://cf-pcmdi.llnl.gov/documents/cf-standard-names/guidelines CF convention].

== Product design ==
Given: <blockquote>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.</blockquote>

=== 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:
<blockquote>
<INSTRUMENT_ID>_<PRODUCT_TYPE>_<PROCESSING_LEVEL>_<SPACECRAFT_ID>_
_<SENSING_START>_<SENSING_END>_<PROCESSING_MODE>_<DISPOSITION_MODE>_<PROCESSING_ TIME>
</blockquote>

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 ====
{| border="1" cellpadding="20" cellspacing="0"
!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 ====
{| border="1" cellpadding="20" cellspacing="0"
!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
|}

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SOLab product specification

SOLab product specification