EAS 270: TABLES

Specific gas constants for dry air and for water vapour

R_d 287 J kg^-1 K^-1

R_v 462 J kg^-1 K^-1
Miscellaneous properties of air which we shall treat as roughly constant over the environmental temperature range.

Specific heat capacity c_p 1010 J kg^-1 K^-1

Latent heat of evaporation L_v 2.5e6 J kg^-1

R_d	287	J kg^-1 K^-1
R_v	462	J kg^-1 K^-1

Equilibrium (or "saturation") vapour pressure e_S(T) in [millibars] versus temperature T at 1 C intervals (you may perform a linear interpolation for intermediate values; for a wider range of temperatures refer to a textbook on meteorology or more comprehensive tables of data, such as the Handbook of Physics and Chemistry, held by the library). Note: 1mb = 100 Pa.

T [C] e_s(T) T [C] e_s(T)

-5 4.21 15 17.04

-4 4.55 16 18.17

-3 4.90 17 19.37

-2 5.28 18 20.63

-1 5.68 19 21.96

0 6.11 20 23.37

1 6.57 21 24.86

2 7.05 22 26.43

3 7.58 23 28.09

4 8.13 24 29.83

5 8.72 25 31.67

6 9.35 26 33.61

7 10.01 27 35.65

8 10.72 28 37.80

9 11.47 29 40.06

10 12.27 30 42.43

11 13.12 31 44.93

12 14.02 32 47.55

13 14.97 33 50.31

14 15.98 34 53.20

T [C]	e_s(T)	T [C]	e_s(T)
-5	4.21	15	17.04
-4	4.55	16	18.17
-3	4.90	17	19.37
-2	5.28	18	20.63
-1	5.68	19	21.96
0	6.11	20	23.37
1	6.57	21	24.86
2	7.05	22	26.43
3	7.58	23	28.09
4	8.13	24	29.83
5	8.72	25	31.67
6	9.35	26	33.61
7	10.01	27	35.65
8	10.72	28	37.80
9	11.47	29	40.06
10	12.27	30	42.43
11	13.12	31	44.93
12	14.02	32	47.55
13	14.97	33	50.31
14	15.98	34	53.20

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Specific heat capacity	c_p	1010	J kg^-1 K^-1
Latent heat of evaporation	L_v	2.5e6	J kg^-1

EAS 270: TABLES

Last Modified: 2 Oct., 2006