Himalayan Journals, vol 2 by J. D. Hooker (great reads TXT) 📖

48.3 48.7 40.8 47.4

Max. 53.1 60.2 50.9 51.8

Min. 41.1 40.3 32.3 42.6

Max. Depression 17.3 45.2 57.2 27.1

Min. Depression 5.4 22.0 25.1 10.2

Weight of Vapour in cubic feet 4.240 4.097 2.975 3.933

SATURATION

Mean .754 .342 .211 .511

Max. .831 .488 .598 .703

Min. .570 .226 .154 .415

Number of observations 12 11 11 11

Extreme variations of Temperature 44.7 degrees

Extreme variations of relative humidity .677

Extreme diff. Solar and Nocturnal Radiation 100 degrees

NOCTURNAL RADIATION

SUNRISE

Exposed Th. On Earth On Grass

Temperature 51.7 52.4 48.8

Mean Diff. from Air 4.1 3.4 7.0

Max. Diff. from Air 8.0 7.0 11.5

Number of Observations 9 9 9

NINE P.M.

Exposed Th. On Earth On Grass

Temperature 61.2 64.3 55.8

Mean Diff. from Air 6.8 4.6 11.8

Max. Diff. from Air 10.5 8.5 17.0

Number of Observations 10 9 9

SOLAR RADIATION

MORNING

Time Temp. Black Bulb Diff. Phot.

11.30 a.m. 85.5 129 44.5 ...

10.30 a.m. 89.0 132 43.0 ...

Noon 90.0 132 42.0 10.140

Noon 85.0 130 45.0 ...

Noon 86.0 138 52.0 ...

Noon 90.0 138 48.0 ...

Mean 87.6 133 45.8 10.140

AFTERNOON

Time Temp. Black Bulb Diff. Phot.

3 p.m. 85.5 116 30.5 ...

3 p.m. 92.5 128 35.5 ...

3 p.m. 92.0 120 28.0 ...

3 p.m. 89.5 128 38.5 ...

3 p.m. 93.5 144 50.5 ...

Mean 90.6 127 36.6 ...

NOCTURNAL RADIATION FROM PLANTS

SUNRISE Mean

Air Temp. 61.0 57.0 57.0 58.5 57.0 50.0 50.5 56.0 55.9

Barley 56 46 52 52 52 45 43 ... 49.4

Diff. 5.0 11.0 5.0 6.5 5.0 5.0 7.5 ... 6.4

Calotropis 56.5 48.0 ... ... ... 45.5 ... ... 50.0

Diff. 4.5 9.0 ... ... ... 4.5 ... ... 6.0

Argemone 57.0 50.0 50.0 ... ... ... ... 49.0 51.5

Diff. 4.0 7.0 7.0 ... ... ... ... 7.0 6.2

NINE P.M. Mean

Air Temp. 68.5 70.0 69.0 74.0 62.5 67.5 61.0 ... 67.5

Barley ... ... ... ... 51.5 67.5 50.0 ... 56.3

Diff. ... ... ... ... 11.0 10.0 11.0 ... 10.7

Calotropis ... 65.0 57.0 59.0 ... 62.5 ... ... 60.9

Diff. ... 5.0 12.0 15.0 ... 5.0 ... ... 9.3

Argemone 56.0 67.0 57.0 ... ... ... ... ... 60.0

Diff. 12.5 3.0 12.0 ... ... ... ... ... 9.2

The upper course of the Soane being in some places confined, and

exposed to furious gusts from the gullies of the Kymore hills, and at others expanding into a broad and flat valley, presents many

fluctuations of temperature. The mean temperature is much above that of the lower parts of the same valley (below Tura), the excess

amounting to 5.4 degrees. The nights and mornings are cooler, by 1.2

degrees, the days hotter by 10 degrees. There were also 10 degrees

increase of range during the thirteen days spent there; and the mean range from day to day was nearly as great as it was on the hills

of Bengal.

There being much exposed rock, and the valley being swept by violent dust-storms, the atmosphere is drier, the mean saturation point being .454, whereas in the lower part of the Soane's course it was .516.

A remarkable uniformity prevails in the depression of thermometers

exposed to nocturnal radiation, whether laid on the earth, grass, or freely exposed; both the mean and maximum indication coincide very

nearly with those of the lower Soane valley and of the hills.

The temperature of tufts of green barley laid on the ground is one

degree higher than that of short grass; Argemone and Calotropis

leaves maintain a still warmer temperature; from the previous

experiments the Argemone appeared to be considerably the cooler,

which I was inclined to attribute to the smoother and more shining

surface of its leaf, but from these there would seem to be no

sensible difference between the radiating powers of the two plants.

IV. TABLE-LAND OF KYMORE HILLS (MEAN ELEV. 979 FEET), MARCH 3RD TO 8TH, 1848.

Hour