126 lines
4.0 KiB
Plaintext
126 lines
4.0 KiB
Plaintext
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AME 5.1
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NARDINESS ZONES
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ZONE Av. Annull Mln. Temp. Av. Anna-I Mlnt Tut-up. COMMENTS
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(”5 ("(3)
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I Below 50 Eelow 45 Arctic lunflla
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2 -50 lo 40 -45 lo 40 Cold plains and conflels
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3 ~40 lo -30 ~40 lo -:M Canllers and must! luresls
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J ,30 in -2cl ~34 to -29 Cold thlenars or continents
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5 A20 to ~10 291° ~23 Mtxed Invests, cool meme!
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8 40 lo a .2310 rla Broadlsai and uea‘duous
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Invests
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7 mo 10 «am-12 Eraadleauoraets
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8 \0 to an ~l2 In -7 Ana grmlands, savanhah
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5 20 to an ,7 lo -l Semi-arid coasts and basins
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w an in Ac 4 to A Suh-lmplcal, palms, wists
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n 40 w 50 4 lo 10 Tlopiml lolasls, «sens
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12 over 50 over 10 Equatorial lalnlolasls, monsoon
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the northern Thul trorn latitude so—zo-, and In the
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roaring lartrea", abmn I543 nllenumlg htgh-Iow
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parrs at gm! relts rrreatate the earth, all at thern as
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srnaller splnl systems around the suit polar splral
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itsell (Finn 53) on westerly corals, the alternation o!
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eold polar and warn. lugh pressure arr arrtm at lbw!
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Iflday Intervals, although some great high»pressvre
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eells persist in plate, "in! blucklng weuward
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rnoyernent 0! wind, and creatrng static oeeahre
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conditions that an alleet peeanit aver-turn, and thus
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lrsheries le 5 the rl Nlrla eueetl
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These great proeeasiohs are disturbed and deiteeted
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try eontrnehts, stubborn hlghrpvrsulu eetls oyer tool
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land rnases, and the relative intensity ol the air cells, so
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that irregular mldrwnrm lronts amt/c at any one sue
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lost as polar air rs somerrrnts drawn mungly towards
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the equatar m the lows, sowarrn troprral atr mam are
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entrained in the outer eireulatton at the highs and bring
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heavy warm rarhs towards the poles ngh level
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leunums rnay speed up or black this prmon and
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the .etstrearn rrseli rrray alao tnealr up under stresses
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caused by shear.
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The dlanrrhanoea and lrnpedentes in the system earrse
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eold ironta to prle up Hymns! each other and dzfled
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polewards at hlgb—prasum rella, and a sequenee ert
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winnr and eold-lrpnt rains «he cydonlt or aprral
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rathst o1 earth results,
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All Ittse wrnd behs shill north or south with the sun
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annually. and to aorne sluwu eatenr aa a result at the
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latsyear rnoen eyele. so that periods eri mush! and
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ereesslve rain rah result The system appears chaotte,
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and subjefl only to short—term predietrrrn, hutol late we
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are learning to assess some al the elleets art the
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longrlzmt cycles,
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m w! sprral emulation ol the south polar regions
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is shown in rigure 5.: About lzets cold lrortts (dnud
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bandst etrete trorn west trr east around the polea,
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m7
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anivmg as -eyetor.ie lrollls" every la or so dayr on
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mean rn that region They atteet areas up to w aouth,
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with tour or so large lranta rantrnuoua with land
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probably dnving) etvud tip ro in- south or north
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latitude, rhostty along the western maxgms at Scum
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Arnet-tea, Mara, and the south Arlinllt. lt is now tlear
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that it rs the orerrrrr etrerrlalroh that drives the air
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rnassaa, rather than the opposite,
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nte lronts are dragged tn a rum In the wast as the
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unh splits to the east. Eaeh eloud ltont rs a result ol'dw
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meeting oi told polar and warm suta.polar air masses
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or high-pressure eells The low—pressure areas rotate
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rloelrwlse, the lush: anti-eloekwrse rn a serres at
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tagwlikc spirals ar tort that travel every 3—4 rrtantha
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around the poles Rounun is in the oppasrte sense In
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the northern hernraphere. lt rr the cold, dense. dry polar
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arr sweeping on the tee-ops, and the hot nsms arr al
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the equatorial ralrrts whreh drives these great wheels;
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eleaHtr (descaldlng) inlru ns ate ol holedry arid
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(olded'y continental air lttusiral'a, Alrreal or air
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dearendtrrg irotn the equatorial msmg) cungmznm
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(figure so,
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in the next seetiaha oi thrs ehapter, l will tre
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diaeuasrng CLIMA‘nC FACI‘DRS under parts, as below
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r Pmplhhon lrath,log.dew.evaparaoon-atl,
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- Radiation llrytt, heat, lapel, solar input-ssh
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- mrrda (nmml wrnrls. hurrirarres and tornadoes ,
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set;
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- landaeape elteets laltihnle, vulcys, slopes“; and
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- hfiludfilhlude [mat-5155).
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4
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PRECIPITATlDN
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There are two basre rnpuis to preeipttatteh: that at
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rarnlall, snow, and hart (WATER FALLING treat the
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