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Dataset

 
Climatic Research Unit (CRU) Logo

CRU CY3.25: Climatic Research Unit (CRU) Year-by-Year Variation of Selected Climate Variables by CountrY (CY) version 3.25 (Jan. 1901 - Dec. 2016)

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2017-09-22
DOI Publication Date: 2017-12-04
Download Stats: last 12 months

This dataset has been superseded. See Latest Version here
Abstract

This version of CRU CY is superseded by version 4.01. It is being made available to assist with users moving to the new process. No further releases of version 3 are planned.

An updated set of country definitions have been introduced with this version. Please see the appropriate Release Notes.

The CRU CY version 3.25 dataset consists of ten climate variables for country averages at a monthly, seasonal and annual frequency; including cloud cover, diurnal temperature range, frost day frequency, precipitation, daily mean temperature, monthly average daily maximum and minimum temperature, vapour pressure and potential evapotranspiration.

This dataset was produced in 2017 by the Climatic Research Unit (CRU) at the University of East Anglia and extends CRU CY 3.24.01.

Spatial averages are calculated using area-weighted means. CRU CY3.25 is derived directly from the CRU TS3.25 dataset. CRU CY version 3.25 spans the period 1901-2016 for 289 countries.

To understand the CRU-CY3.25 dataset, it is important to understand the construction and limitations of the underlying dataset, CRU TS3.25. It is therefore recommended that all users read the Harris et al, 2014 paper listed in the online documentation on this record.

CRU CY data are available for download to all CEDA users.

Citable as:  University of East Anglia Climatic Research Unit; Harris, I.C.; Jones, P.D. (2017): CRU CY3.25: Climatic Research Unit (CRU) Year-by-Year Variation of Selected Climate Variables by CountrY (CY) version 3.25 (Jan. 1901 - Dec. 2016). Centre for Environmental Data Analysis, 04 December 2017. doi:10.5285/237c618d8b2e49cf8e61d01780f11650. http://dx.doi.org/10.5285/237c618d8b2e49cf8e61d01780f11650
Abbreviation: Not defined
Keywords: CRU, CRU CY, climate

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No releated previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
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.
Data lineage:

CRU CY is derived directly from the CRU TS dataset, and version numbering is matched between the two datasets. Thus, the first official version of CRU CY was v3.21 as it is based on CRU TS v3.21.

CRU CY 3.24 data files supplied to CEDA for long-term archival by CRU in October 2016.

The CRU CY 3.24 data were withdrawn in January 2017 due to known issues with the data.

CRU CY 3.24.01 data files supplied to CEDA for long-term archival by CRU in January 2017.

CRU CY 3.25 data files supplied to CEDA for long-term archival by CRU in September 2017.

Data Quality:
CRU CY is derived directly from the CRU TS dataset, and version numbering is matched between the two datasets. Thus, the first official version of CRU CY is v3.21, as it is based on CRU TS v3.21. An advisory note was issued by CRU in July 2013 regarding an issue in the spatial area of Northeast Africa, for the PRE and WET variables only. Details are given in the documentation as part of the archive.
File Format:
Data are provided in ASCII and NetCDF formats.

Process overview

This dataset was generated by the computation detailed below.
Title UEA Climate Research Unit (CRU) High Resolution gridding software deployed on UEA Climate Research Unit (CRU) computer system
Abstract This computation involved: UEA Climate Research Unit (CRU) High Resolution gridding software deployed on UEA Climate Research Unit (CRU) computer system. For details about the production of CRU TS and CRU CY datasets, please refer to Harris et al. (2014) - see link below.
Input Description None
Output Description None
Software Reference None

No variables found.

Coverage
Temporal Range
Start time:
1901-01-01T12:00:00
End time:
2016-12-31T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-60.0000°