CWVC - Chilbolton Advanced Meteorological Radar (CAMRa) data

General Info

Title:	CWVC - Chilbolton Advanced Meteorological Radar (CAMRa) data
Type:	Data Entity
Sub-Type:	Measurement
Abbreviation:	cwvc-camra
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-camra

Summary
A brief description of the data.

These data are part of the NERC Clouds, Water Vapour and Climate (CWVC) programme. With a diameter of 25 metres the 3 GHz CAMRa at Chilbolton Observatory (UK) is the largest steerable meteorological radar in the world. Polarisation and Doppler data are stored in netCDF format for 30 March 1999, 9 June 2000, 20 October 2000, 21 November 2000, and 28 February 2001. Quicklook images are also available.

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

These data are part of the NERC Clouds, Water Vapour and Climate (CWVC) programme.

The 3 GHz Chilbolton Advanced Meteorological Radar (CAMRa) is the largest steerable meteorological radar in the world. The 25 metre dish is located at the Chilbolton Observatory in England (UK). It has dual-polarisation capability and full Doppler capability. The scan-type is usually 'ppi' (plan-position indicator, i.e. a horizontal scan) or 'rhi' (range-height indicator, i.e. a vertical scan). Chilbolton Observatory is operated by the Radio Communications Research Unit of CCLRC Rutherford Appleton Laboratory.

The characteristics of the radar are:

Frequency	3.075 GHz
Antenna diameter	25 metres
Peak power	560 kW
Pulse width	0.5 micro-sec
Pulse repetition frequency	610 Hz
System noise figure	1.3 dB
Beamwidth	0.28 degrees
Range resolution	300 m or 75 m
Cross-polar isolation	-34 dB
Standard maximum slew rate	1 degree/sec
Unambiguous velocity	15 m/s

Data Access

The CWVC CAMRa dataset is now public. Please acknowledge the source of the data in any publication.

Availability of data and file format

Data and quicklook images, for 30 March 1999, 9 June 2000, 20 October 2000, 21 November 2000, 28 February 2001, are available.

Data are stored in the BADC CWVC Mixed Phase Clouds data project archive.

Images are stored in the BADC CWVC Mixed Phase Clouds images project archive.

The data are in netCDF (binary) format and comply with the CF conventions ( NetCDF Climate and Forecast Metadata Convention (Eaton et al., 2001)).

Documentation, Links to further information and references

Documentation for the CAMRa dataset can be found in the BADC CWVC data area
The Reading Radar Group CAMRa web page contains information, including details about calibration and known problems.
CWVC Data Protocol
CWVC Data Management Plan (Word document).
Metadata standards for netCDF files, by Eaton et al., 2001.

Citation

Date of citation

Who to contact

If you have queries about these pages or about obtaining the CWVC-CamRA 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 is Dr. Keith Bower (UMIST, Manchester).
The CWVC Programme Administrator is Dr Sally Palmer (NERC, Swindon).
Robin Hogan (Reading) supplied the dataset.
Charles Kilburn (RAL) may be contacted about CAMRa.

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 in 2003 (filenames may have been updated from original to be consistent with the BADC Filename convention.

Quality Statement
Description of the relative quality of the dataset.

Unknown

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
NERC CWVC CAMRa campaign participants

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 CAMRa Data Directory
Download	CWVC CAMRa Images Directory
Logo	CWVC Logo
Documentation	The University of Reading CAMRa website
Documentation	Chilbolton Observatory CAMRa 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

RADARREFLECTIVITY	RADAR	ENGINEERING	SPECTRAL
EARTH SCIENCE	NULL	DOPPLERVELOCITY

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
RADARREFLECTIVITY	http://vocab.ndg.nerc.ac.uk/term/null	NULL
RADAR	http://vocab.ndg.nerc.ac.uk/term/null	NULL
ENGINEERING	http://vocab.ndg.nerc.ac.uk/term/P141	NULL
SPECTRAL	http://vocab.ndg.nerc.ac.uk/term/P131	NULL
EARTH SCIENCE	http://vocab.ndg.nerc.ac.uk/term/P111	GCAT0001
NULL	general_units	0
DOPPLERVELOCITY	http://vocab.ndg.nerc.ac.uk/term/null	NULL

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

Spatial coverage
Max Y: 51.145
Min X: -1.437	Max X -1.437
Min Y 51.145

Temporal coverage
Start Date:	1999-03-30
End Date:	2001-02-28

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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