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Table 2 Total number of the daily temperature and precipitation extremes [[44]] for summer in the investigated 20-year time periods

From: Case study for the assessment of the biogeophysical effects of a potential afforestation in Europe

Extreme index

Definition [unit]

Region

Number of days

Change of the number of days

   

REF

SA2 vs. REF

SA2F vs. SA2

SA2F vs. REF

SU

when

DE

168

+212

−29

+183

Number of summer days

Tmax ≥ 25°C [day]

FR

248

+365

−32

+333

  

UA

760

+382

−55

+327

Tx30GE

when

DE

21

+54

−20

+34

Number of hot days

Tmax ≥ 30°C [day]

FR

24

+152

−26

+126

  

UA

151

+227

−31

+196

Tx35GE

when

DE

0

+2

−1

+1

Number of extremely hot days

Tmax ≥ 35°C [day]

FR

1

+22

−10

+12

  

UA

8

+47

−7

+40

RR1

when

DE

796

+124

−53

+71

Number of dry days

Rday < 1 mm [day]

FR

931

+185

−45

+140

  

UA

1098

+132

−68

+64

RR10

when

DE

133

−13

+41

+28

Number of heavy precipitation days

Rday ≥ 10 mm [day]

FR

127

−38

+20

−18

  

UA

110

−21

+14

−7

RR20

when

DE

19

0

+17

+17

Number of very heavy precipitation days

Rday ≥ 20 mm [day]

FR

16

+1

+10

+11

  

UA

14

+3

+6

+9

  1. REF: Reference simulation 1971–90, SA2: Emission scenario simulation 2071–90, SA2F: Potential afforestation experiment 2071–90. DE: northern Germany, FR: northeast France, UA: northeast Ukraine. Bold and scored values: potential afforestation would reduce more than half of the climate change signal. Bold values: potential afforestation would enhance the climate change signal.