Impact potentiel du changement climatique sur les sécheresses pédologiques en bretagne au 21ème siècle

Open Access

Tableau 2

Valeurs annuelles (en mm) observées (obs) et modélisées (mod) pour les 10 stations retenues et pour les variables : P, précipitations, ETP, évapotranspiration potentielle, ETR, évapotranspiration réelle, DE, déficit d’évaporation, diff, différence entre modélisé et observé. Annual values in mm for observed (obs) and simulated (mod) data for the ten chosen meteorological stations for various parameters: P, rainfall, ETP, potential evapotranspiration, ETR, real evapotranspiration, DE, evaporation deficit, diff, differences between modeling and observed data.

		Angers	Belle-Ile	Ile-de-Bréhat	Brest	Caen	Dinard	Lorient	Nantes	Rennes	Rostrenen
P	obs	673	692	750	1166	730	750	921	800	675	1095
	mod	668	781	723	1133	711	754	1081	782	674	1067
	diff (mm)	−5	89	−27	−34	19	4	160	−18	−1	−29
	diff (%)	−1	11	−4	−3	3	0	15	−2	0	−3
ET	obs	811	731	651	655	702	732	715	816	775	632
	mod	739	745	683	655	692	754	726	783	706	629
	diff (mm)	−73	14	32	0	−10	22	11	−32	−69	−4
	diff (%)	−10	2	5	0	−1	3	2	−4	−9	−1
ETR	obs	558	520	534	577	571	584	624	574	550	536
	mod	529	546	538	572	549	576	597	557	525	534
	diff (mm)	−29	26	4	−6	−22	−7	−27	−16	−25	−2
	diff (%)	−6	5	1	−1	−4	−1	−5	−3	−5	0
DE	obs	252	210	117	77	130	147	147	241	224	96
	mod	209	199	145	82	142	177	129	226	181	94
	diff (mm)	−44	−11	28	5	12	29	−19	−16	−44	−2
P-ETP	obs	−138	−39	99	511	28	18	206	−16	−100	463
	mod	−71	36	40	478	19	0	355	−1	−32	438
	diff (mm)	67	75	−59	−33	−9	−18	149	15	68	−25

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