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CRU CY3.21: Climatic Research Unit (CRU) Year-by-Year Variation of Selected Climate Variables by CountrY (CY) version 3.21 (Jan. 1901 - Dec. 2012)
Dataset
Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2013-09-25
DOI Publication Date: 2013-10-04
Download Stats: last 12 months
 
Abstract

The CRU CY3.21 dataset consists of country averages at a monthly, seasonal and annual frequency, for ten climate variables in 289 countries for the period Jan. 1901 to Dec. 2012. It was produced in 2013 by the Climatic Research Unit (CRU) at the University of East Anglia.
Spatial averages are calculated using area-weighted means. Variables include cloud cover (cld), diurnal temperature range (dtr), frost day frequency (frs), precipitation (pre), daily mean temperature (tmp), monthly average daily maximum (tmx) and minimum (tmn) temperature, vapour pressure (vap), Potential Evapo-transpiration (pet) and wet day frequency (wet).

CRU CY3.21 is derived directly from the CRU TS3.21 dataset. Version numbering is matched between the two datasets.

To understand the CRU-CY3.21 dataset, it is important to understand the construction and limitations of the underlying dataset, CRU TS3.21. It is therefore recommended that all users read the paper referenced below (Harris et al, 2014).

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

Citable as:  University of East Anglia Climatic Research Unit; Harris, I.C. (2013): CRU CY3.21: Climatic Research Unit (CRU) Year-by-Year Variation of Selected Climate Variables by CountrY (CY) version 3.21 (Jan. 1901 - Dec. 2012). NCAS British Atmospheric Data Centre, 04 October 2013. doi:10.5285/f9d4b545-ded2-423c-b61c-f8a67609adf7. http://dx.doi.org/10.5285/f9d4b545-ded2-423c-b61c-f8a67609adf7
Keywords:  Not defined
Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__ACTIVITY_04e6c3d0-2620-11e3-a795-00163e251233
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.
Abbreviation:
cru_cy_3.21
Data lineage:

CRU CY 3.21 data files acquired directly from CRU in 2013.

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:
The CRU CY 3.21 data are available in human readable ASCII file format. To understand how to read the CRU CY 3.21 data files, please refer to the CRU_CY_3.21_File_Formats_explained PDF documentation (under Linked Documentation below).
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
There are no comments about this dataset
Temporal Range
1901-01-01T00:00:00
2012-12-31T00:00:00
Geographic Extent

  90.0000°  
-180.0000°     180.0000°
  -60.0000°  
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