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Supplement of Earth Syst. Dynam., 11, 537–562, 2020 https://doi.org/10.5194/esd-11-537-2020-supplement © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Supplement of Multivariate bias corrections of climate simulations: which benefits for which losses? Bastien François et al. Correspondence to: Bastien François ([email protected]) The copyright of individual parts of the supplement might differ from the CC BY 4.0 License.

Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

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Page 1: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

Supplement of Earth Syst. Dynam., 11, 537–562, 2020https://doi.org/10.5194/esd-11-537-2020-supplement© Author(s) 2020. This work is distributed underthe Creative Commons Attribution 4.0 License.

Supplement of

Multivariate bias corrections of climate simulations:which benefits for which losses?Bastien François et al.

Correspondence to: Bastien François ([email protected])

The copyright of individual parts of the supplement might differ from the CC BY 4.0 License.

Page 2: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

Mod

el

CD

F−t

R2D

2

2d−d

OTC

Spat

ial−

dOTC

Full−

dOTC

MBC

n

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

0.0

0.5

1.0

1.5

2.0

2.5

Mea

n d

iffer

ence

(T2)

(a)

Mod

el

CD

F−t

R2D

2

2d−d

OTC

Spat

ial−

dOTC

Full−

dOTC

MBC

n

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

0.0

0.2

0.4

0.6

0.8

Mea

n re

lativ

e di

ffere

nce

(PR

)

(b)

Mod

el

CD

F−t

R2D

2

2d−d

OTC

Spat

ial−

dOTC

Full−

dOTC

MBC

n

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

−0.4

−0.3

−0.2

−0.1

0.0

Stan

dard

dev

. rel

ativ

e di

ffere

nce

(T2)

(c)

Mod

el

CD

F−t

R2D

2

2d−d

OTC

Spat

ial−

dOTC

Full−

dOTC

MBC

n

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

−0.2

0.0

0.2

0.4St

anda

rd d

ev. r

elat

ive

diffe

renc

e (P

R)

(d)

Figure S1. Boxplots of mean (a and b) and standard deviation (c and d) differences for Temperature (T2, a and c) and Precipitation (PR,

b and d) during winter over the 1979-2016 period for the Brittany region (SAFRAN reference). Results are shown for: plain IPSL; CDF-t;

R2D2; dOTC (2d-, Spatial- and Full-versions); MBC-n and MRec (2d-, Spatial- and Full-versions) outputs. Red asterisks indicate values

lying outside the plotted range.

2

Page 3: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

42

46

50

−0.25−0.05 0.15 0.35 0.55

La

titu

de

(a1) Reference (b1) Model (c1) CDF−t

42

46

50

(d1) 2d−R2D2

La

titu

de

(e1) Spatial−R2D2 (f1) Full−R2D2

42

46

50

(g1) 2d−dOTC

La

titu

de

(h1) Spatial−dOTC (i1) Full−dOTC

42

46

50

(j1) 2d−MBCn

La

titu

de

(k1) Spatial−MBCn (l1) Full−MBCn

−5 0 5 10

42

46

50

(m1) 2d−MRec

La

titu

de

Longitude−5 0 5 10

(n1) Spatial−MRec

Longitude−5 0 5 10

(o1) Full−MRec

Longitude

47

.54

8.5

0.160.240.330.410.50

La

titu

de

(a2) Reference (b2) Model (c2) CDF−t

47

.54

8.5

(d2) 2d−R2D2

La

titu

de

(e2) Spatial−R2D2 (f2) Full−R2D2

47

.54

8.5

(g2) 2d−dOTCL

atitu

de

(h2) Spatial−dOTC (i2) Full−dOTC4

7.5

48

.5

(j2) 2d−MBCn

La

titu

de

(k2) Spatial−MBCn (l2) Full−MBCn

−5.0 −4.0 −3.0

47

.54

8.5

(m2) 2d−MRec

La

titu

de

Longitude−5.0 −4.0 −3.0

(n2) Spatial−MRec

Longitude−5.0 −4.0 −3.0

(o2) Full−MRec

Longitude

Figure S2. Maps of temperature vs. precipitation Spearman correlation maps computed at each grid cell using WFDEI reference (a1-o1) and

SAFRAN reference (a2-o2) during winter over the 1979-2016 period. Results are shown for: Reference; plain IPSL; CDF-t; R2D2; dOTC;

MBC-n and MRec outputs for respectively 2d-, Spatial- and Full- versions. Note that the color scales between (a1-o1) and (a2-o2) are not

the same to better emphasize intensities of values of the two regions.

3

Page 4: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

●● ● ●

●●

● ●●

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

0 300 600 900 1200

● ReferenceModelCDF−t

(a1)

●● ● ●

●●

● ●●

●−

0.5

0.0

0.5

1.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

0 300 600 900 1200

● ReferenceModel2d−R2D2Spatial−R2D2Full−R2D2

(b1)

●● ● ●

●●

● ●●

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

0 300 600 900 1200

● ReferenceModel2d−dOTCSpatial−dOTCFull−dOTC

(c1)

●● ● ●

●●

● ●●

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

0 300 600 900 1200

● ReferenceModel2d−MBCnSpatial−MBCnFull−MBCn

(d1)

●● ● ●

●●

● ●●

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

0 300 600 900 1200

● ReferenceModel2d−MRecSpatial−MRecFull−MRec

(e1)

●●

●●

●●

● ● ● ●●

● ●●

0 50 100 150 200

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

● ReferenceModelCDF−t

(a2)

●●

●●

●●

● ● ● ●●

● ●●

0 50 100 150 200

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

● ReferenceModel2d−R2D2Spatial−R2D2Full−R2D2

(b2)

●●

●●

●●

● ● ● ●●

● ●●

0 50 100 150 200

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

● ReferenceModel2d−dOTCSpatial−dOTCFull−dOTC

(c2)

●●

●●

●●

● ● ● ●●

● ●●

0 50 100 150 200

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

● ReferenceModel2d−MBCnSpatial−MBCnFull−MBCn

(d2)

●●

●●

●●

● ● ● ●●

● ●●

0 50 100 150 200

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tial c

orr

ela

tion

● ReferenceModel2d−MRecSpatial−MRecFull−MRec

(e2)

Figure S3. Correlograms for temperature using WFDEI reference (a1-e1) and SAFRAN reference (a2-e2) during winter over the 1979-2016

period. Results are shown for Reference (circles) and plain IPSL (black line). Results are displayed for: CDF-t; R2D2; dOTC; MBC-n and

MRec outputs for respectively 2d- (dotted), Spatial- (dashed) and Full-versions (solid lines).

4

Page 5: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

42

46

50

−0.03 0.10 0.23 0.36 0.50

La

titu

de

(a1) Reference−0.40−0.20 0.00 0.20 0.40

(b1) Model (c1) CDF−t

42

46

50

(d1) 2d−R2D2

La

titu

de

(e1) Spatial−R2D2 (f1) Full−R2D2

42

46

50

(g1) 2d−dOTC

La

titu

de

(h1) Spatial−dOTC (i1) Full−dOTC

42

46

50

(j1) 2d−MBCn

La

titu

de

(k1) Spatial−MBCn (l1) Full−MBCn

−5 0 5 10

42

46

50

(m1) 2d−MRec

La

titu

de

Longitude−5 0 5 10

(n1) Spatial−MRec

Longitude−5 0 5 10

(o1) Full−MRec

Longitude

47

.54

8.5

0.110.190.270.340.42

La

titu

de

(a2) Reference−0.23−0.11 0.00 0.11 0.23

(b2) Model (c2) CDF−t

47

.54

8.5

(d2) 2d−R2D2

La

titu

de

(e2) Spatial−R2D2 (f2) Full−R2D2

47

.54

8.5

(g2) 2d−dOTC

La

titu

de

(h2) Spatial−dOTC (i2) Full−dOTC

47

.54

8.5

(j2) 2d−MBCn

La

titu

de

(k2) Spatial−MBCn (l2) Full−MBCn

−5.0 −4.0 −3.0

47

.54

8.5

(m2) 2d−MRec

La

titu

de

Longitude−5.0 −4.0 −3.0

(n2) Spatial−MRec

Longitude−5.0 −4.0 −3.0

(o2) Full−MRec

Longitude

Figure S4. Differences of order 1 autocorrelation for precipitation using WFDEI reference (a1-o1) and SAFRAN reference (a2-o2) during

winter over the 1979-2016 period. Results are shown for: Reference; plain IPSL; CDF-t; R2D2; dOTC; MBC-n and MRec outputs for

respectively 2d-, Spatial- and Full- versions. Note that the color scales between (a1-o1) and (a2-o2) are not the same to better emphasize

intensities of values of the two regions.

5

Page 6: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

CD

F−

t

2d−

R2D

2

Spa

tial−

R2D

2

Ful

l−R

2D2

2d−

dOT

C

Spa

tial−

dOT

C

Ful

l−dO

TC

2d−

MB

Cn

Spa

tial−

MB

Cn

Ful

l−M

BC

n

2d−

MR

ec

Spa

tial−

MR

ec

Ful

l−M

Rec

0.0

0.2

0.4

0.6

0.8

1.0

Spe

arm

an c

orr.

T2

(a)C

DF

−t

2d−

R2D

2

Spa

tial−

R2D

2

Ful

l−R

2D2

2d−

dOT

C

Spa

tial−

dOT

C

Ful

l−dO

TC

2d−

MB

Cn

Spa

tial−

MB

Cn

Ful

l−M

BC

n

2d−

MR

ec

Spa

tial−

MR

ec

Ful

l−M

Rec

0.0

0.2

0.4

0.6

0.8

1.0S

pear

man

cor

r. P

R

(a)C

DF

−t

2d−

R2D

2

Spa

tial−

R2D

2

Ful

l−R

2D2

2d−

dOT

C

Spa

tial−

dOT

C

Ful

l−dO

TC

2d−

MB

Cn

Spa

tial−

MB

Cn

Ful

l−M

BC

n

2d−

MR

ec

Spa

tial−

MR

ec

Ful

l−M

Rec

0.0

0.2

0.4

0.6

0.8

1.0

Spe

arm

an c

orr.

T2

(b)

CD

F−

t

2d−

R2D

2

Spa

tial−

R2D

2

Ful

l−R

2D2

2d−

dOT

C

Spa

tial−

dOT

C

Ful

l−dO

TC

2d−

MB

Cn

Spa

tial−

MB

Cn

Ful

l−M

BC

n

2d−

MR

ec

Spa

tial−

MR

ec

Ful

l−M

Rec

0.0

0.2

0.4

0.6

0.8

1.0

Spe

arm

an c

orr.

PR

(b)

Figure S5. Boxplots of rank correlation computed at each grid cell between the bias corrected and the raw climate model time series for

precipitation using WFDEI for France (a) and SAFRAN for Brittany (b) region during winter over the 1979-2016 period. For both boxplots,

results are shown for: CDF-t; R2D2; dOTC; MBC-n and MRec outputs for 2d-, Spatial- and Full-versions.

6

Page 7: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

42

46

50

−0.19−0.10 0.00 0.10 0.19

La

titu

de

(a1) Reference (b1) Model (c1) CDF−t

42

46

50

(d1) 2d−R2D2

La

titu

de

(e1) Spatial−R2D2 (f1) Full−R2D2

42

46

50

(g1) 2d−dOTC

La

titu

de

(h1) Spatial−dOTC (i1) Full−dOTC

42

46

50

(j1) 2d−MBCn

La

titu

de

(k1) Spatial−MBCn (l1) Full−MBCn

−5 0 5 10

42

46

50

(m1) 2d−MRec

La

titu

de

Longitude−5 0 5 10

(n1) Spatial−MRec

Longitude−5 0 5 10

(o1) Full−MRec

Longitude

47

.54

8.5

−0.12−0.06 0.00 0.06 0.12

La

titu

de

(a2) Reference (b2) Model (c2) CDF−t

47

.54

8.5

(d2) 2d−R2D2

La

titu

de

(e2) Spatial−R2D2 (f2) Full−R2D2

47

.54

8.5

(g2) 2d−dOTC

La

titu

de

(h2) Spatial−dOTC (i2) Full−dOTC

47

.54

8.5

(j2) 2d−MBCn

La

titu

de

(k2) Spatial−MBCn (l2) Full−MBCn

−5.0 −4.0 −3.0

47

.54

8.5

(m2) 2d−MRec

La

titu

de

Longitude−5.0 −4.0 −3.0

(n2) Spatial−MRec

Longitude−5.0 −4.0 −3.0

(o2) Full−MRec

Longitude

Figure S6. Differences of temperature vs. precipitation Spearman correlation computed at each grid cell between the 1979-1997 and 1998-

2016 periods during summer. WFDEI (a1-o1) and SAFRAN (a2-o2) data are used for the bias correction. Note that the color scales between

(a1-o1) and (a2-o2) are not the same to better emphasize intensities of values of the two regions.

7

Page 8: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

● ●

●● ●

●●

(a) *

0

50

100

Ref

.

CD

F−t

2d−R

2D2−

T2

2d−R

2D2−

PR

Spa

tial−

R2D

2

Full−

R2D

2

2d−d

OTC

Spa

tial−

dOTC

Full−

dOTC

2d−M

BC

n

Spa

tial−

MB

Cn

Full−

MB

Cn

2d−M

Rec

Spa

tial−

MR

ec

Full−

MR

ec

Was

sers

tein

dis

tanc

e●

Wd on Spatial T2Wd on Spatial PRWd on Spatial T2/PR

●●

● ● ● ●● ●

●●

(b)

0

50

100

Ref

.

CD

F−t

2d−R

2D2−

T2

2d−R

2D2−

PR

Spa

tial−

R2D

2

Full−

R2D

2

2d−d

OTC

Spa

tial−

dOTC

Full−

dOTC

2d−M

BC

n

Spa

tial−

MB

Cn

Full−

MB

Cn

2d−M

Rec

Spa

tial−

MR

ec

Full−

MR

ec

Was

sers

tein

dis

tanc

e

●Wd on Spatial T2Wd on Spatial PRWd on Spatial T2/PR

Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square),

precipitation (circle) and both temperature and precipitation (triangle) for the region of France (a) and Brittany (b). Results are presented

for: Reference; plain IPSL (lines); CDF-t and the different multivariate BC outputs. 2d-R2D2-T2 (resp. 2d-R2D2-PR) indicates results for

2d-R2D2 with temperature (resp. precipitation) used as reference dimension. Black asterisks indicate values lying outside the plotted range.

8

Page 9: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

Mod

el

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

−1.0

−0.5

0.0

0.5

1.0

1.5

2.0M

ean

diff

eren

ce (T

2)(a)

Mod

el

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

−0.5

0.0

0.5

1.0

Mea

n re

lativ

e di

ffere

nce

(PR

)

(b)

Mod

el

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec−0.2

−0.1

0.0

0.1

Stan

dard

dev

. rel

ativ

e di

ffere

nce

(T2)

(c)

Mod

el

2d−M

Rec

Spat

ial−

MR

ec

Full−

MR

ec

−0.6

−0.4

−0.2

0.0

0.2

0.4

Stan

dard

dev

. rel

ativ

e di

ffere

nce

(PR

)

(d)

Figure S8. Boxplots of mean (a and b) and standard deviation (c and d) differences for Temperature (T2, a and c) and Precipitation (PR,

b and d) during winter over the 1979-2016 period for the France region (WFDEI reference) with seasonal BC. Results are shown for: plain

IPSL and MRec (2d-, Spatial- and Full-versions) outputs. Red asterisks indicate values lying outside the plotted range.

9

Page 10: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

−5 0 5 10

42

44

46

48

50

52

−0.25−0.05 0.15 0.35 0.55

La

titu

de

Longitude

(a1) 2d−MRec

−5 0 5 10

(b1) Spatial−MRec

Longitude−5 0 5 10

(c1) Full−MRec

Longitude

Figure S9. Temperature vs. precipitation Spearman correlation maps computed at each grid cell using WFDEI reference (a1-c1) during

winter over the 1979-2016 period with seasonal BC. Results are shown for MRec (a1-c1) outputs for respectively 2d-, Spatial- and Full-

versions.

10

Page 11: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

●●

●●

● ● ● ●●

● ● ●

●●

−0

.50

.00

.51

.0

Distance (km)

T2

Sp

ea

rma

n s

pa

tia

l co

rre

latio

n

0 300 600 900 1200

● ReferenceModel2d−MRecSpatial−MRecFull−MRec

(a)

●●

●●

● ● ● ● ● ● ● ●● ● ● ●

−0

.20

.20

.40

.60

.81

.0

Distance (km)

PR

Sp

ea

rma

n s

pa

tia

l co

rre

latio

n

0 300 600 900 1200

● ReferenceModel2d−MRecSpatial−MRecFull−MRec

(b)

Figure S10. Correlograms for temperature (a) and precipitation (b) using WFDEI reference for France during winter over the 1979-2016

period with seasonal BC. Results are shown for: Reference (circles), plain IPSL (black line) and MRec outputs for respectively 2d- (dotted),

Spatial- (dashed) and Full-versions (solid lines).

11

Page 12: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

−5 0 5 10

42

44

46

48

50

52

−0.02 0.20 0.42 0.64 0.86

La

titu

de

Longitude

(a1) 2d−MRec

−5 0 5 10

(b1) Spatial−MRec

Longitude−5 0 5 10

(c1) Full−MRec

Longitude

Figure S11. Order 1 Pearson autocorrelation for temperature using WFDEI reference during winter over the 1979-2016 period for the

seasonal BC. Results are shown for MRec outputs for 2d-, Spatial- and Full-versions.

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Page 13: Supplement of · 2020-06-15 · Figure S7. Values of the three Wasserstein distances between 1979-1997 and 1998-2016 periods during winter for temperature (square), precipitation

−5 0 5 10

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−0.02 0.11 0.24 0.37 0.50

La

titu

de

Longitude

(a1) 2d−MRec

−5 0 5 10

(b1) Spatial−MRec

Longitude−5 0 5 10

(c1) Full−MRec

Longitude

Figure S12. Order 1 Pearson autocorrelation for precipitation using WFDEI reference during winter over the 1979-2016 period for the

seasonal BC. Results are shown for MRec outputs for 2d-, Spatial- and Full-versions.

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