Climate Aridity under Changing Conditions and Implications for the Agricultural Sector: Italy as a Case Study

Table 2

Minimum, average, and maximum yearly aridity index (AI) values grouped by italian region for the period 1951–2010. Average values and ranking and percentage variation of the AI have been calculated also for the periods 1951–1980 and 1981–2010. Data source and processing of CRA-CMA.

Region	1951–2010			1951–1980		1981–2010		% Variation
	Minimum	Average	Maximum	Average	Ranking	Average	Ranking
Northern
Valle d'Aosta	0.52	1.43	3.08	1.51	19	1.34	20	−11.3
Emilia Romagna	0.54	0.89	1.47	0.96	8	0.81	10	−15.3
Trentino Alto Adige	0.73	1.32	2.39	1.43	18	1.20	18	−16.5
Veneto	0.65	1.08	1.73	1.18	14	0.98	15	−17.2
Liguria	0.48	1.07	1.81	1.19	15	0.95	14	−20.5
Piedmont	0.54	1.15	2.12	1.28	16	1.01	17	−21.3
Lombardy	0.56	1.16	2.21	1.32	17	1.00	16	−24.2
Friuli Venezia Giulia	0.89	1.56	3.01	1.82	20	1.30	19	−28.6
Centre
Umbria	0.53	0.92	1.45	0.99	10	0.84	12	−15.2
Latium	0.50	0.87	1.39	0.95	7	0.80	8	−15.6
Marche	0.52	0.90	1.40	0.99	9	0.81	9	−17.9
Tuscany	0.52	0.94	1.62	1.06	13	0.82	11	−22.0
South
Basilicata	0.45	0.73	1.08	0.78	4	0.68	4	−13.1
Apulia	0.34	0.60	0.98	0.64	3	0.56	3	−13.6
Abruzzo	0.45	0.78	1.22	0.84	5	0.71	6	−14.9
Calabria	0.55	0.93	1.44	1.01	12	0.84	13	−17.1
Campania	0.50	0.89	1.38	1.00	11	0.79	7	−20.6
Molise	0.48	0.79	1.25	0.89	6	0.69	5	−22.3
Islands
Sicily	0.27	0.56	0.97	0.57	1	0.55	2	−3.4
Sardinia	0.29	0.55	0.96	0.62	2	0.48	1	−22.3
Italy	0.49	0.90	1.54	0.99		0.81		−18.4