CRU TS3.22: Climatic Research Unit (CRU) Time-Series (TS) Version 3.22 of High Resolution Gridded Data of Month-by-month Variation in Climate (Jan. 1901- Dec. 2013)

The gridded CRU TS (time-series) 3.22 data are month-by-month variations in climate over the period 1901-2013, on high-resolution (0.5x0.5 degree) grids, produced by the Climatic Research Unit (CRU) at the University of East Anglia.

CRU TS 3.22 variables are cloud cover, diurnal temperature range, frost day frequency, PET, precipitation, daily mean temperature, monthly average daily maximum and minimum temperature, vapour pressure and wet day frequency for the period Jan. 1901 - Dec. 2013.

CRU TS 3.22 data were produced using the same methodology as for the 3.21 datasets. In addition to updating the dataset with 2013 data, the v3.22 release corrects an error in the v3.21 dataset. This is summarised in the document, CRU_Advisory_v3.2x_NE_Africa.txt, and affects PRE and WET variables only. There are several known issues with the current dataset which cannot be resolved in the timeframe of this release; they will be addressed in the future. This directory also contains an advisory note regarding an issue with 35 Mozambique stations that were new. After an investigation by the CRU, the comparison plots show that the only countries affected in a possibly significant way are Egypt and Eritrea. The details of these can be found in this directory.

The CRU TS 3.22 data are monthly gridded fields based on monthly observational data, which are calculated from daily or sub-daily data by National Meteorological Services and other external agents. The ASCII and netcdf data files both contain monthly mean values for the various parameters.

All CRU TS output files are actual values - NOT anomalies.

CRU TS data are available for download to all CEDA users. The CEDA Web Processing Service (WPS) may be used to extract a subset of the data (please see link to WPS below).

Identification info

Metadata Language: English (en)

Dataset Reference Date (): 2014-09-17T21:23:12

Dataset Reference Date (): 2014-09-17T21:23:12

Identifier: http://catalogue.ceda.ac.uk/uuid/4a6d071383976a5fb24b5b42e28cf28f

Identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 4a6d071383976a5fb24b5b42e28cf28f

Identifier: doi / http://dx.doi.org/10.5285/18BE23F8-D252-482D-8AF9-5D6A2D40990C

University of East Anglia Climatic Research Unit (CRU) - author

University of East Anglia, School of Environmental Sciences , Faculty of Science, Norwich Research Park , Norwich , NR4 7TJ , United Kingdom

+44 (0) 1603 592542

Unavailable - Harris, Ian C ( author )

Unavailable - Jones, Philip D. ( author )

NCAS British Atmospheric Data Centre (NCAS BADC) - custodian

British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK

+44(0)1235 446432

NCAS British Atmospheric Data Centre (NCAS BADC) - distributor

British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK

+44(0)1235 446432

NCAS British Atmospheric Data Centre (NCAS BADC) - point_of_contact

British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK

+44(0)1235 446432

NCAS British Atmospheric Data Centre (NCAS BADC) - publisher

British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK

+44(0)1235 446432

Maintenance and update frequency: notPlanned

Update scope: dataset

Keywords

CRU TS
ATMOSPHERE
EARTHSCIENCE

GEMET - INSPIRE themes, version 1.0 ()

atmospheric conditions

Limitations on Public Access: otherRestrictions

Other constraints: Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.

Use constraints: otherRestrictions

Other constraints: Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ . When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: grid

Topic category

Climatology, meteorology, atmosphere

Begin date: 1901-01-01T00:00:00

End date: 2013-12-31T00:00:00

Code: WGS 84

Distribution Information

Data format

The CRU TS 3.22 data (i.e. climate variables) are available in both compressed (.gz extension) ASCII ".dat" and netcdf ".nc" file formats. CRU TS 3.22 metadata files (i.e. stations and observations) are available in ASCII. To understand how to read the CRU TS 3.22 data and metadata files, please refer to the CRU_TS_3.22_File_Formats_explained PDF documentation (under Linked Documentation below). ()

Resource Locator: CEDA Data Catalogue Page
Detail and access information for the resource

Resource Locator: DOWNLOAD
Download Data

Resource Locator: Climate Research Unit (CRU) data Homepage
No further details.

Resource Locator: Harris et al. (2014) Reference
No further details.

Resource Locator: CRU TS 3.22 file formats guide
No further details.

Resource Locator: CRU User Guide
No further details.

Resource Locator: CEDA Data Catalogue Page
Detail and access information for the resource

Resource Locator: DOWNLOAD
Download Data

Resource Locator: Climate Research Unit (CRU) data Homepage
No further details.

Resource Locator: Harris et al. (2014) Reference
No further details.

Resource Locator: CRU TS 3.22 file formats guide
No further details.

Resource Locator: CRU User Guide
No further details.

Quality Scope: dataset

Report

Dataset Reference Date (): 2010-12-08

Statement: CRU TS 3.00 data files acquired directly from CRU in 2007. CRU provided the BADC with software to generate the CRU datasets in 2010, and this was used to produce CRU TS 3.10 at the BADC in early 2011.

In July 2012, systematic errors were discovered in the CRUTS v3.10 process. The effect was, in some cases, to reduce the gridded values for PRE and therefore WET. Values of FRS were found to be unrealistic in some areas due to the algorithms used for synthetic generation. The files (pre, frs and wet) were immediately removed from BADC. The corrected run for precipitation, based on the v3.10 precipitation station data, was generated as a direct replacement and given the version number 3.10.01. There were no corrected runs produced for wet and frs.

CRU TS 3.20 was produced in December 2012.

In March 2013, CRU TS observation databases for TMP and PRE variables were provided by CRU. Others are in preparation. In july 2013, two errors were found in the PRE and WET variables of CRU TS v3.20. These have been repaired in CRU TS v3.21. Details of the errors found are available in the Release Notes in the archive.

CRU TS 3.21 was produced in July 2013.

In July 2014, CRU TS 3.22 provided by CRU, is the latest version available, superseding all previous data versions (which are available to allow user comparisons).

Metadata

File identifier: 4a6d071383976a5fb24b5b42e28cf28f XML

Metadata Language: English (en)

Character set: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646

Parent identifier: Climatic Research Unit (CRU): Time-series (TS) datasets of variations in climate with variations in other phenomena v3 3f8944800cc48e1cbc29a5ee12d8542d

Resource type: dataset

Metadata Date: 2023-02-02T00:24:33

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

NCAS British Atmospheric Data Centre (NCAS BADC)

British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK

+44(0)1235 446432

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