Geochemical Fingerprinting of Rising Deep Endogenous Gases in an Active Hypogenic Karst System

Table 1

Climate conditions in the study are during the last two decades, including the annual-average values of main climatic parameters: air temperature, relative humidity, rainfall, and evapotranspiration according to the Penman-Monteith FAO parameterization scheme [25].

Hydrological year	T_avgr (°C)	RH_avgr (%)	Rainfall (mm) ETP	PM_FAO (mm)
Sept. ’96–Aug. ’97	17.08	68.7	271	1210
Sept. ’97–Aug. ’98	17.70	67.1	242	1239
Sept. ’98–Aug. ’99	17.35	64.1	206	1268
Sept. ’99–Aug. ’00	17.36	65.5	135	1250
Sept. ’00–Aug. ’01	17.95	63.3	183	1319
Sept. ’01–Aug. ’02	17.20	66.6	416	1192
Sept. ’02–Aug. ’03	18.09	62.7	212	1262
Sept. ’03–Aug. ’04	17.55	67.7	360	1161
Sept. ’04–Aug. ’05	17.22	67.2	132	1340
Sept. ’05–Aug. ’06	17.19	70.2	316	1308
Sept. ’06–Aug. ’07	17.70	69.2	344	1359
Sept. ’07–Aug. ’08	16.81	67.1	305	1376
Sept. ’08–Aug. ’09	16.54	59.8	319	1423
Sept. ’09–Aug. ’10	16.64	66.2	520	1330
Sept. ’10–Aug. ’11	16.59	64.1	189	1384
Sept. ’11–Aug. ’12	17.06	58.3	128	1575
Sept. ’12–Aug. ’13	16.52	59.9	355	1424
Sept. ’13–Aug. ’14	17.41	57.4	95	1560
Sept. ’14–Aug. ’15	17.60	58.6	266	1531
Sept. ’15–Aug. ’16	17.32	59.5	187	1491
Sept. ’16–Aug. ’17	17.51	60.8	382	1459
Average year	17.26	64.0	265	1355