Adiabatic changes, 12 comprcssion, 1 lapsc ratę, dry, 12 saturatcd, 12 Advection fog, 62 Air temperaturę, 2 —see also under temperaturę Airmasscs, 107 aretie, 108, 1 n boundaries, 112 classification of, 108 cold, 111
Continental polar, 111 Continental tropical, 111 equatorial, 108 fronts, 112 history of, 111 identifying, 172 maritimc polar, 108 maritimc tropical, 108 properties of, 111 source regions, 108 warm, 111
Air movements on a rotating earth, 26 Air temperaturę, measurement of, at sca, 16
Altitude, correction of barometer for, 20 Altocumulus, 54 Anabatic wind, 87 Analysis, plotting of, 191 preparation of, 172 requirements of a good, 176 Anemograph, 36 Ancroid barometer, 19 Anticyclones, 24, 132 cold, 132
intensifying and weakening of, 179 warm, 133 Arcticair, 108, iii front, 112
Atlantic Weather Bullctin, 184 Atlases, Marinę Mctcorological, 73 Atmospherc: composition of, 1 eflcct ofsea upon, 264 energy exchange between sca and, 263 generał circulation of, 74 physical properties of, 1
Atmospherc (continued) stabilityof, 12
temperaturę, factors controlling, 4 temperaturę of, 2 vcrtical structurc of, 2 water vapour in, 7 Atmospheric instability, 12 Audibility ofsound signals in fog, 65
Barometer, 19 aneroid, 19 corrections, 20 Beaufort scalę, 26 Bora, 87
Brcczcs, land and sca, 86 Buys Ballot’s law, 30, 156
Cargo, effect of temperaturę and humid-ityon, 17
Charts, meteorological, of the oceans, 67 currcnt, of the oceans, 212 synoptic, 165
Circulation of the atmospherc, generał,
upper air, 91 Cirrocumulus, 53 Cirrostratus, 53 Cirrus, 53
Climatology of the oceans, 67, 95 Clouds (generał), 49
amount over the sca, 100 classification of, 53 form of, 52 formation of, 49 height of, 53
movcmcnt and changes of, 55 orographic, 50 structure at cold front, 120 at warm front, 118 turbulence, 50 Codcs, intcmational, 184 Col, 24, 137 Cold air mass es, 111 anticyclonc, 132 front, 120 occlusion, 121 pools, 131
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