VIRTEM: Aircraft and Laboratory Based Spectroscopic Measurements

The new satellite instrument, IASI (Infrared Atmospheric Sounding Interferometer), is a moderate resolution (0.25 cm-1) Fourier Transform spectrometer launched in 2002 on the European METOP satellite. This instrument offers more spectral channels at a considerably higher spectral resolution than HIRS (High Resolution Infrared Sounder) - the instrument which it replaced as the operational infra-red sounder. IASI delivers vertical profiles of temperature and humidity data with a resolution of 1km compared with approximately 4km from HIRS.

Translating the improvement in the spectral resolution of the instrument into improvements in the accuracy and height resolution of the temperature, humidity and ozone profiles is dependent on a detailed knowledge of the spectroscopy of the atmosphere in this spectral region. The aim of the Validation of IASI (Infrared Atmospheric Sounding Interferometer) Radiative Transfer Experiments and Modelling (VIRTEM) project was to make the improvements to the spectroscopy necessary to make full use of the increased spectral resolution of IASI.

The primary objectives of the VIRTEM project were:

*To generate a detailed set of atmospheric observations of radiances and supporting in-situ data.

*To analyse and validate the current spectroscopy using state of the art line-by-line radiation models.

*To generate an improved spectroscopic database.

VIRTEM was an EU project to validate the instrumentation and retrieval methods to be used on IASI. Data in this dataset collection include both aircraft based and lab based spectroscopic measurements.

Date (Publication): 1999-12-10T03:09:32

Date (Creation): 1999-12-10T03:09:32

Citation identifier: https://catalogue.ceda.ac.uk/uuid/67a97e179d0dcee074969cb7ea87e928

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 67a97e179d0dcee074969cb7ea87e928

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Met Office Remote Sensing Branch Farnborough (Met Office RSI)		unknown	Author
Max Planck Institute for Meteorology (MPI-M)		unknown	Author
Laboratoire de Meteorologie Dynamique (LMD)		unknown	Author
STFC Rutherford Appleton Laboratory		unknown	Author
Unavailable	Taylor, J.P.	Unavailable	Author
Unavailable	Atkinson, N.	Unavailable	Author
Unavailable	Bakan, S.	Unavailable	Author
Unavailable	Hollweg, H-D.	Unavailable	Author
Unavailable	Timm, R.	Unavailable	Author
Unavailable	Jacquinet-Husson, N.	Unavailable	Author
Unavailable	Scott, N.A.	Unavailable	Author
Unavailable	Stubenrauch, Claudia	Unavailable	Author
Unavailable	Ballard, J.	Unavailable	Author
Unavailable	Newnham, D.A.	Unavailable	Author
Unavailable	Williams, G.	Unavailable	Author
Unavailable	McPheat, Robert J.	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
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: Unknown

Update scope: Series

Keywords

VIRTEM
IASI
Temperature Humidity

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Please contact the data centre for assistance on accessing data from this dataset collection.

Use constraints: Other restrictions

Other constraints: Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, 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: 1998-08-04T23:00:00

End date: 1999-05-05T23:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Contact data centre for format details.

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/67a97e179d0dcee074969cb7ea87e928	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/virtem/doc/www.virtem.rl.ac.uk/index.html	Copy of VIRTEM project website

Hierarchy level: Series

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: Please see data lineage statements for each dataset within this collection for data lineage details.

Metadata

File identifier: 67a97e179d0dcee074969cb7ea87e928 XML

Metadata language: English

Character set: UTF8

Hierarchy level: Series

Hierarchy level name: series

Date stamp: 2025-06-06T02:26:11

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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