A daily time-step observed and scenario climate dataset on a European grid for crop modelling applications (version 2)

DOI

https://dx.doi.org/10.4228/ZALF.DK.94

Title

A daily time-step observed and scenario climate dataset on a European grid for crop modelling applications (version 2)

Creator(s)

Fronzek, Stefan
ORCID: 0000-0003-2478-8050
Affiliation: Finnish Environment Institute (SYKE), Finland

Webber, Heidi
ORCID: 0000-0001-8301-5424
Affiliation: Leibniz Centre for Agricultural Landscape Research (ZALF), Germany

Rötter, Reimund
ORCID: 0000-0002-3804-9964
Affiliation: University of Göttingen, Germany

Ruane, Alex
ORCID: 0000-0002-5582-9217
Affiliation: NASA Goddard Institute for Space Studies, (GISS), USA

Ewert, Frank
Affiliation: University of Bonn, Germany; Leibniz Centre for Agricultural Landscape Research (ZALF), Germany

Creator Institution

Finnish Environment Institute (SYKE), Finland
Leibniz Centre for Agricultural Landscape Research (ZALF), Muencheberg (Germany)
University of Göttingen, Germany
NASA Goddard Institute for Space Studies, USA (GISS)
University of Bonn, Germany; Leibniz Centre for Agricultural Landscape Research (ZALF), Germany

Contributor Person

Contact Person: Fronzek, Stefan

Contributor Institution

Hosting Institution: Leibniz Centre for Agricultural Landscape Research (ZALF), Muencheberg (Germany)
Data Collector: NASA Goddard Institute for Space Studies, USA (GISS)
Data Collector: University of Göttingen, Germany
Data Collector: University of Bonn, Germany
Data Collector: Finnish Environment Institute (SYKE), Finland

Description

Abstract: The data set contains daily time-step observed and scenario climate data on a European grid with 25 km x 25 km spatial resolution and is intended to be used for crop modelling applications. The dataset covers the period 1980-2010 for observations (for a baseline period of 1981-2010 and the year 1980 for crop model simulations with sowing dates in the autumn) and the periods 2040-2069 and 2070-2099 for 5 GCMs x 2 forcing scenarios (RCP4.5 and RCP8.5) and 2 GCMs with RCP2.6. The Joint Research Centre’s (JRC) Agri4Cast gridded dataset was used for the baseline. The scenarios have been calculated using an enhanced delta change method that applies changes in aspects of temperature and precipitation variability in addition to changes in mean climate.

Methods: The structure of the single tables refers to the gridcode of the model, for example the gridcode 35120 fits the location 35_120. This means the gridcode column is 120, the row 35. The explanation can be found in the properties of the kml file or the associated grid file.

The data was generated by applying a “delta change factor” based on GCM outputs for RCP scenarios corresponding to the periods: 2040 until 2069 and from 2070 until 2099. As the “delta change factor” for these periods was applied to baseline observations for the period of 1.1.1980 to 31.12.2010, the dates for the respective scenario periods are still 1.1.1980 to 31.12.2010, due to the fact they are scenarios (ie, what would climate be relative to baseline climate). Pragmatically this avoids issues with different alignment of leap years between baseline and scenario periods. This is standard practice in climate data. Users of the data can adjust the dates as needed for their application.

SeriesInformation: Two versions of the dataset are available: version 1 (DOI: https://www.doi.org/10.4228/ZALF.DK.59; consisting of 8709 grid cells) that was used by Webber et al. (2018) and an updated version 2 (this page - DOI: https://www.doi.org/10.4228/ZALF.DK.94; consisting of 8748 grid cells) that corrects an error when accounting for altitude differences to agricultural cultivation areas. It is recommended to use the latest version, unless the data of version 1 are intended to be used for direct comparison with the results of Webber et al. (2018), https://www.doi.org/10.1038/s41467-018-06525-2.

Related identifier

IsVersion: https://www.doi.org/10.4228/ZALF.DK.59

Resource type

Dataset; table

Subject

AGROVOC: Crop modeling

Date

Collected (start date): 01.01.1980

Collected (end date): 31.12.2100

Funding Reference

Award Number: 292836 (Academy of Finland)
Award Number: 277403 (Academy of Finland)
Award Number: 277276 (Academy of Finland)
Funder Name: Finnish Ministry of Agriculture and Forestry
Funder Name: Academy of Finland

Language

english

Format

csv

Version

Publication Year

2018

Publisher

Leibniz Centre for Agricultural Landscape Research (ZALF), Muencheberg (Germany)

GeoLocation

View Europe

Structure of Data Table

Table: Climate_macsur_v2

Column name	Units	Description
Period	-	code indicating the time period (0: 1980-2010, 2: 2040-2069, 3: 2070-2099) code indicating the time period (0: 1980-2010, 2: 2040-2069, 3: 2070-2099), calculated
gcm_rcp	-	code for GCM/RCP simulation denoted as GCM_RCP, where GCM is one of GFDL-CM3, GISS-E2-R, HadGEM2-ES, MIROC5, MPI-ESM-MR and RCP one of 26, 45 and 85 for RCP2.6, RCP4.5 and RCP8.5, calculated
Date	-	string in the format YYYYMMDD
tmax	°C	maximum air temperature, calculated
tmin	°C	minimum air temperature, calculated
vprsd	kPa	mean daily vapour pressure, calculated
wind	km·d^-1	mean daily wind speed at 2 m, calculated
rain	mm·d^-1	sum of precipitation, calculated
srad	MJ·m^-2·d^-1	total global radiation, calculated
rhumd_tn	%	relative humidity at tmin, calculated
rhumd_tx	%	relativ humidity at tmax, calculated
dewp	°C	dewpoint temperature, calculated

Additional info

Data are stored as comma-separated values (csv) in one file per grid cell containing values for the baseline and all scenarios. Gridcell IDs are composed of the column and row numbers (see image below). Download is possible for individual grid cells or tar-packages containing files for a range of column numbers (i.e. defining a longitudinal band). Please send to us name of your square name from Geolocation. One single package contains one csv file (see above - Structure of Data Table).
The dataset consists of 8.748 dowloadable packages. Each package contain one single csv file with name of row + name of column. See image below.

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Example_data

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If you have any questions please send an email to rda@zalf.de (subject DOI: 10.4228/ZALF.DK.94).

Download grid cells and coordinates This file was added on Dec 12, 2019.
Download missing data (grid cells and years with missing data in the JRC database) This file was added on Dec 12, 2019

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Rights

This data by ZALF is licensed under the Creative Commons Attribution BY 4.0