FRANC: Doppler radar radial wind observations and associated observation-minus-model residuals from the Met Office UKV 3D Var assimilation scheme

The dataset is provided to support the publication 'Diagnosing Observation Error Correlations for Doppler Radar Radial Winds in the Met Office UKV Model Using Observation-Minus-Background and Observation-Minus-Analysis Statistics' by Waller et al (2016). The dataset was created as part of the NERC Flooding from Intense Rainfall (FRANC) project in order to study the observation uncertainties associated with Doppler radar radial wind observations assimilated in to the Met Office UK variable resolution model. The dataset is processed output of the Met Office UKV 3D var assimilation scheme for June, July and August 2013 for four different experimental scenarios. Full details and equations are given in Waller et al (2016) but the four different experimental cases are summarised as follows:

- Case 1: Control experiment using standard UKV settings in place in January 2014

- Case 2: As Case 1, but with a different background error covariance matrix used in the data assimilation

- Case 3: As Case 1, but with raw Doppler radial wind observations rather than superobservations

- Case 4: As Case 3, but with an improved observation operator.

For each case the dataset consists of the radial wind observations assimilated at each assimilation cycle valid between 01/06/2013 and 31/08/2016 along with the associated observation-minus-background and observation-minus-analysis residuals. Each observation also has metadata that describes the location of the observation (both in latitude/longitude co-ordinates, and co-ordinates relative to the radar station) , the assimilation cycle at which it was assimilated and the observation error variance that the observation was assigned in the data assimilation scheme.

These data are published under the Open Government License ( http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/) © Crown Copyright, 2020, Met Office”.

Date (Publication): 2020-09-30T10:41:42

Date (Creation): 2020-09-30T10:41:42

Citation identifier: https://catalogue.ceda.ac.uk/uuid/5d8221e070e64823891bed7a87840447

Citation identifier: Centre for Environmental Data Analysis (CEDA) / 5d8221e070e64823891bed7a87840447

Citation identifier: doi / 10.5285/5d8221e070e64823891bed7a87840447

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Unavailable	Waller, Joanne A.	Unavailable	Author
Unavailable	Simonin, David	Unavailable	Author
Unavailable	Dance, Sarah L.	Unavailable	Author
Unavailable	Nichols, Nancy K.	Unavailable	Author
Unavailable	Ballard, Susan P.	Unavailable	Author
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Custodian
Met Office		enquiries@metoffice.gov.uk	Owner
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor
Unavailable	Dance, Sarah L.	Unavailable	Principal investigator
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	pointofContact
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

Doppler radial winds
data assimilation
convection permitting numerical weather prediction

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://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: 2013-06-01T00:00:00

End date: 2013-08-31T23:59:59

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are BADC-CSV formatted.

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Centre for Environmental Data Analysis (CEDA)		support@ceda.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/5d8221e070e64823891bed7a87840447	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/deposited2020/franc/data/franc_radialwinds/	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	https://doi.org/10.1175/MWR-D-15-0340.1	Waller, J. A., D. Simonin, S. L. Dance, N. K. Nichols, and S. P. Ballard, 2016: Diagnosing Observation Error Correlations for Doppler Radar Radial Winds in the Met Office UKV Model Using Observation-Minus-Background and Observation-Minus-Analysis Statistics. Mon. Wea. Rev., 144, 3533–3551, https://doi.org/10.1175/MWR-D-15-0340.1.

OnLine resource

Protocol	Linkage	Name
	http://blogs.reading.ac.uk/flooding/	Flooding From Intense Rainfall programme website, including details of the FRANC project

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: Observation data were quality controlled, superobservations were created and superobservations quality controlled before being assimilated with Met Office UKV background data. The data assimilation output was then prepared for archiving before upload to the Centre for Environmental Data Analysis (CEDA) for long term archiving.