Polar Pathfinder Sampler (PPSM): SMMR and SSM/I Pathfinder brightness temperature data (1978-1987)

The SMMR and SSM/I Pathfinder brightness temperatures provide scientists with more than 20 years of consistently processed, passive microwave data for use in climatological and earth science research. Each file represents gridded data for a single sensor channel and polarization, derived from either ascending or descending orbits for one day, thereby allowing discrimination of diurnal changes in earth surface processes.

Each data sets consists of three series: the Northern and Southern Hemispheres and a global projection. Grids represent spatially interpolated data. The interpolation techniques maximize the radiometric integrity of original brightness temperature values, maintain high spatial and temporal precision, and involve no averaging of original swath data.

SMMR coverage began October 1978 and continued through July 1987. Grid resolution is 25 km for all channels. SSM/I coverage began August 1987 and continues through the present. Processing is ongoing with current data available within three to six months of sensor data acquisition. Resolution is 25 km for all channels and 12.5 km for the 85 GHz channels.

A sample data set comprising selected SSM/I EASE-Grid brightness temperature data and time files for all three projections from September 8 (day 251), 1997 is included on this CD-ROM.

Date (Publication): 2007-02-06T02:45:46

Date (Creation): 2007-02-06T02:45:46

Citation identifier: https://catalogue.ceda.ac.uk/uuid/80a0863baa49f11c9c7ca7a570208346

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 80a0863baa49f11c9c7ca7a570208346

Point of contact

Organisation name	Individual name	Electronic mail address	Role
National Snow and Ice Data Centre		unknown	Author
Unavailable	Armstrong, Richard	Unavailable	Author
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Custodian
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor
Unavailable	Khalsa, Siri Jodha Singh	Unavailable	Principal investigator
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

CLOUDS
ATMOSPHERE
SEAICE
CRYOSPHERE
ATMOSPHERICWATERVAPOR
ATMOSPHERICWINDS
SNOW
ATMOSPHERICTEMPERATURE
ATMOSPHERICRADIATION
ENGINEERING
SPECTRAL

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence http://creativecommons.org/licenses/by/4.0/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 1978-10-24T23:00:00

End date: 1987-08-19T23:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are binary and HDR formatted. Images are GIF formatted.

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/80a0863baa49f11c9c7ca7a570208346	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/CDs/ppsm/SSMI	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/CDs/ppsm/SSMI/doc.htm	PPSM SSMI data documentation

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: CD-ROM data produced by the National Snow and Ice Data Centre and published in 2000. Data are stored at the BADC.

Metadata

File identifier: 80a0863baa49f11c9c7ca7a570208346 XML

Metadata language: English

Character set: UTF8

Parent identifier: Polar Pathfinder Sampler (PPSM): Combined Time Series of Atmospheric and Surface Measurements from the AVHRR, SMMR-SSM/I and TOVS Satellites
a6ca5bc1b36d1b1a83cba4e4ac4b0bac

Hierarchy level: Dataset

Date stamp: 2026-03-15T03:01:55

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Point of contact

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