TABEL KOMPOSISI VOLUME ATMOSFER (UDARA) DALAM KONDISI KEMARAU

Composition of dry atmosphere, by volume^{[▽note 1]}

Gas (and others)		Volume by various[15][▽note 2]		Volume by CIPM-2007[16]		Volume by ASHRAE[17]		▼ Tap this text to expand or collapse the table ▲
		ppmv[▽note 3]	percentile	ppmv	percentile	ppmv	percentile
Nitrogen	(N2)	780,800	(78.080%)	780,848	(78.0848%)	780,818	(78.0818%)
Oxygen	(O2)	209,500	(20.950%)	209,390	(20.9390%)	209,435	(20.9435%)
Argon	(Ar)	9,340	(0.9340%)	9,332	(0.9332%)	9,332	(0.9332%)
Carbon dioxide	(CO2)	397.8	(0.03978%)	400	(0.0400%)	385	(0.0385%)
Neon	(Ne)	18.18	(0.001818%)	18.2	(0.00182%)	18.2	(0.00182%)
Helium	(He)	5.24	(0.000524%)	5.2	(0.00052%)	5.2	(0.00052%)
Methane	(CH4)	1.81	(0.000181%)	1.5	(0.00015%)	1.5	(0.00015%)
Krypton	(Kr)	1.14	(0.000114%)	1.1	(0.00011%)	1.1	(0.00011%)
Hydrogen	(H2)	0.55	(0.000055%)	0.5	(0.00005%)	0.5	(0.00005%)
Nitrous oxide	(N2O)	0.325	(0.0000325%)	0.3	(0.00003%)	0.3	(0.00003%)
Carbon monoxide	(CO)	0.1	(0.00001% )	0.2	(0.00002%)	0.2	(0.00002%)
Xenon	(Xe)	0.09	(0.000009%)	0.1	(0.00001%)	0.1	(0.00001%)
Nitrogen dioxide	(NO2)	0.02	(0.000002%)	-	-	-	-
Iodine	(I2)	0.01	(0.000001%)	-	-	-	-
Ammonia	(NH3)	trace	trace	-	-	-	-
Sulphur dioxide	(SO2)	trace	trace	-	-	-	-
Ozone	(O3)	0.02 to 0.07 [▽note 4]	(2 to 7×10−6%) [▽note 4]	-	-	-	-
Trace to 30 ppm [▽note 6]	(----)	-	-	-	-	2.9	(0.00029%)
Dry air total	(air)	1,000,065.265	(100.0065265%)	999,997.100	(99.9997100%)	1,000,000.000	(100.0000000%)
Not included in above dry atmosphere:
Water vapor	(H2O)	~0.25% by mass over full atmosphere, locally 0.001%–5% by volume.[21]
▽Concentration pertains to the troposphere ▽The NASA total value do not add up to exactly 100% due to roundoff and uncertainty. To normalize, N2 should be reduced by about 51.46 ppmv and O2 by about 13.805 ppmv. ▽ppmv: parts per million by volume (note: volume fraction is equal to mole fraction for ideal gas only, see volume (thermodynamics)) ▽values disregarded for the calculation of total dry air ▽(O3) concentration up to 0.07 ppmv (7×10−6%) in summer and up to 0.02 ppmv (2×10−6%) in winter ▽volumetric composition value adjustment factor (sum of all trace gases, below the (CO2), and adjusts for 30 ppmv)