CWVC - HITRAN water vapour absorbtion

General Info

Title:	CWVC - HITRAN water vapour absorbtion
Type:	Data Entity
Sub-Type:	Measurement
Abbreviation:	cwvc-hitrn
Publication State:	published
The publication state of this metadata: 'old' - for redundant records; 'working' - for new/in progress records; 'published' - for records approaching maturity, which may still change, but should be available via the discovery services; and 'Published' for mature records that are unlikely to change and should be available via the discovery services.

URI:	http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dataent_cwvc-hitrn

Summary
A brief description of the data.

Data from the NERC funded Clouds Water Vapour and Climate (CWVC)'s HITRAN water vapour absorbtion project. CWVC files contain spectral line parameters derived from laboratory measurements on pure water vapour, and mixtures of water vapour and air. The measurements were made at STFC Rutherford Appleton Laboratory Molecular Spectroscopy Facility, and the line fitting was carried out by the Department of Meteorology at the University of Reading. The spectral line parameters are displayed in HITRAN format. Water vapour lines were fitted to the laboratory data in the spectral range 5037 to 5585 cm-1. These data are public.

Content
The actual data being described by this document. NB, in the case of data granules, this content may just be a reference to an ingested CSML or CDML file.

Introduction

The interaction of the atmosphere with near-IR solar (short-wave) radiation is dominated by water vapour absorption. Understanding and characterising the amount and wavelength-dependence of absorption by water vapour and other atmospheric species is essential for climate studies. Model calculations of radiative transfer in the Earth's atmosphere rely on molecular spectral lines databases such as HITRAN to provide information about the spectral properties of molecules present in the atmosphere.

The parameters are derived from laboratory measurements on pure water vapour and mixtures of water vapour and air. The measurements were made at the Molecular Spectroscopy Facility of STFC Rutherford Appleton Laboratory. The line fitting was carried out by the Department of Meteorology at the University of Reading.

The files contain data in HITRAN format, and more details about the format and documentation can be found at their web site. HITRAN is an acronym for high-resolution transmission molecular absorption database.

Data Access

This dataset is now public. Please acknowledge the source of the data in any publication.

Availability of data and file format

Data are stored in the BADC CWVC HITRAN project data archive.

The data are in hitran format.

Documentation, Links to further information and references

Documentation for the HITRAN water vapour absorption dataset can be found in the BADC CWVC doc area.

Help on HITRAN
Help on the HITRAN database
Help on Molecular Spectroscopy Facility at CCLRC Rutherford Appleton Laboratory.

Citation

Date of citation

Who to contact

If you have queries about these pages or about obtaining the CWVC-HITRAN data from the BADC then you should contact BADC Support. Your query should be answered within one working day. When follow-up work is required, the BADC support will carry out the work as quickly and efficiently as possible, and in any case, the user will be kept informed of progress.

The CWVC Programme Science Co-ordinator was Dr Keith Bower (UMIST, Manchester).
The CWVC Programme Administrator was Dr Sally Palmer (NERC, Swindon).
Dr Kevin Smith (RAL) supplied the dataset.

Lineage
Summary of the origins of the dataset, e.g.: "Dataset produced from NASA MODIS instrument on Terra and collected at the University of York's groundstation 1999-2003 and a copy provided to NEODC in June 2007".

Data files supplied as is by the STFC MSF in 2004.

Quality Statement
Description of the relative quality of the dataset.

For quality details please see documentation.

Author
The principal author of the actual underlying data. Only one author can be specified per atom; if there are multiple authors, these should be specified as 'contributors'. NB, an atom MUST have an author specified.

Name	email
Molecular Spectroscopy Facility (Science and Technology Facilities Council)	http://www.msf.rl.ac.uk/contact/index.htm

Contributors
Any other authors of the actual underlying data. NB, the principal author should be specified in the 'Author' input field. Also, note, three contributors can be added at once; after these are added a further three may be specified - and so on.

Name	email
S. Palmer
K. Bower
K. Smith

Online References
Online references with a specific relationship to the data being described here. NB, if links are supplied they must be valid and include the transport protocol - e.g. 'http://blah.co.uk'. Also, note, three online references can be added at once; after these are added a further three may be specified - and so on.

Relation	Title
Download	CWVC HITRAN Data Directory
Download	CWVC HITRAN Doc Directory
Logo	CWVC Logo
Documentation	STFC RAL Molecular Spectroscopy Facility website
Documentation	CWVC Data Protocol
Documentation	BADC Doc: List of CWVC Projects

Parent Data Entity
Define the parent of this record. There should probably only be one parent, but this is not enforced.

No data specified at present

Sub Data Entities
Lists all entities which have the current entity as their parent.

None

Associated Deployments

Parameters - summary

ABSORPTION	ATMOSPHERICRADIATION	ATMOSPHERE	EARTHSCIENCE
EARTH SCIENCE	NULL

Parameters - details
Parameters to describe the data - with vocab URL and term IDs for further classification. Note, three parameters can be added at once; after these are added a further three may be specified - and so on.

Label	Vocab Term URL	Vocab Term ID
ABSORPTION	http://vocab.ndg.nerc.ac.uk/term/null	NULL
ATMOSPHERICRADIATION	http://vocab.ndg.nerc.ac.uk/term/null	NULL
ATMOSPHERE	http://vocab.ndg.nerc.ac.uk/term/P141	NULL
EARTHSCIENCE	http://vocab.ndg.nerc.ac.uk/term/P131	NULL
EARTH SCIENCE	http://vocab.ndg.nerc.ac.uk/term/P111	GCAT0001
NULL	general_units	0

Data Coverage
Summary of the temporal and spatial data coverage for the data.

Spatial coverage
Max Y: 0
Min X: 0	Max X 0
Min Y 0

Temporal coverage
Start Date:	2002-01-01
End Date:	2002-12-31

Spatial resolution

No spatial resoultion information available.

Vertical extent

No vertical extent information available.

Responsible Parties
Parties responsible for the metadata - e.g. data curator. Responsible parties can have a role specified to make their function clearer. Multiple responsible parties can be specified.

Role	Name	URI
Data Curator	badc.nerc.ac.uk	http://badc.nerc.ac.uk

Other Info
Other miscellaneous information. Note, update frequency relates to the update frequency of the underlying data, not the metadata.

Dataset language

English

Update frequency

notPlanned

Links and Services
	Downloadable XML version of this record

Not all information in this record may be rendered in this view. Please see the XML version for complete content

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