CR 70:195-214 Supplementary Material

Trnka M, Olesen JE, Kersebaum KC, Rötter RP, Brázdil R, Eitzinger J, Jansen S, Skjelvåg AO, Peltonen-Sainio P, Hlavinka P, Balek J, Eckersten H, Gobin A, Vuc˘etić V, Dalla Marta A, Orlandini S, Alexandrov V, Semerádová D, Štěpánek P, Svobodová E, Rajdl K
Changing regional weather−crop yield relationships across Europe between 1901 and 2012
CR 70:195-214 | Full text in pdf format

Supplementary data 1:
The files contain climate data used and presented in the paper by Trnka et al., 2016, Changing regional weather-crop yield relationships across Europe between 1901 and 2012 - (Climate Research) The monthly minimum (tmn), mean (tmp) and maximum (tmx) values for air temperature, precipitation (pre), number of precipitation days (wet) and drought severity, expressed in terms of the Palmer Z-index (zind) and Palmer Drought Severity Index (PDSI) both by Palmer 1965, as well as potential evapotranspiration (pet), water vapor presure deficit (vap) and daily temperatue range (dtr) were used as predictors of inter-annual yield variability (for a more detail description of the Palmer Z-index, see Trnka et al. 2009). The monthly climatological data for each region were based on the CRU TS 3.21 dataset (released on 16 July 2013 at; for more details, see Mitchell & Jones 2005 and Harris et al. 2014). Gridded data with a resolution of 0.5x0.5 degrees were based on mean monthly temperatures provided by more than
4 000 weather stations around the world. Using the gridded data, a series of each climate variable was calculated for each region, using the proportion of the arable land within the given grid and region as a weighting factor. For individual periods, the proportion of arable land within each grid was derived as the mean value for the given period using Global Cropland Data (1700ñ2007), which provides revised data described by Ramankutty & Foley (1999) and is available at Country is listed by abbreviation as used in the paper text.

When using the data please cite fully papers by Trnka et al. (2016) and properly refeence also work of Harris et al. 2014 and Ramankutty and Foley (1999).


Supplementary data 2:
The file contains yield data on wheat and barley collected by the authors using online Eurostat and FAO database, printed FAO yearbooks and national statistics. The yields are listed in kg/ha as reported in the statistical databases. Primarily winter wheat and spring barley data were collected but in most cases no separate statics were available.

When using the data please cite fully papers by Trnka et al. (2016) when national statistics yields from multiple countries are used. When FAO or Eurostat data are used pleas acknowledge also the original source of the data.