JPRS ID: 8388 METEOROLOGY AND HYDROLOGY FEBRUARY 1979

• Document Type: CREST
• Collection: JPRS
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00850R000100040024-0
• Release Decision: RIF
• Original Classification: U
• Document Page Count: 96
• Document Creation Date: November 1, 2016
• Sequence Number: 24
• Content Type: REPORTS

APPROVED FOR RELEASE: 2007/02/08: CIA-RDP82-00850R000'100040024-0
FEeRUi tY ~ ~

iA I~R I L i979 N0. 2 , 2 OF 2
APPROVED FOR RELEASE: 2007/02/08: CIA-RDP82-00850R000100040024-0

APPROVED FOR RELEASE: 2007/02/48: CIA-RDP82-44850R000100044424-4
rc~k orrrcrni, ust: oNt.v
~,I~ytil~~;il-~at,~tt:;tl~~;~l rc1.~Cic~?iyhip:i nut taking inro .iccc~unt t:he dyi�micy oC
t~~fil.CrntLun ri~id u~31ng eume integrnl indices of soil wat~r ab~ior.ptivLty.
At tl~e :~~ime ttme, the uy~ of: modcls of he~ik ~ind motHture tran~fer in ~he
5~~i1 ~~in cc~t~siderably br~~nde� ~he ~~ossibilitie:~ oE computinK theye ittilicey
ii~~t ~Irrr~~n (i~~; th~~ i r pli~~s Ic~a I~~ontent.
'I'he mc~st importnnt tnF,~rmcitic~n on th~~ water-abs~rption propertiey of the
:~oil [n the tiurmul~itiu:i of the physic;il-statistic~nl relationshipy .Eor pre-
~I i ct In~; tl~e volume of thc ti~~ring high. water is con :~iined in d.~ta on the
rr.;~~~rve~~ r>>id d.lstrihutic~n of ~~oil mot~;Cure ~ontent, but due to the gre~tt
vrirlnbfltty oC suil muisture runtent c~ver t~he ~~rc~~ .nnd the itiadequate vc~l- _
ume ul" ob~:~ rvati;~ns, in ~~l~nce of the meayured moisture reserves it i9 cu~-
t~~m~~ry to u~;e Cheir indirect characteristic~, whtch are found using tt:e
~~,i~er h,ilance equ~ic[on c~i~ th~~ basiy of ineasurements of precipit~ition nnd
~~v.it~c~r,ition data. i~ur cx~mplc, as an indirect chnracteristic of the mois-
ture re~erva~ ~~ric~r ta [hc on5et of winter it ts movt common to t.~ke the _
- ~:ums ~~f ~reci~ittrit ton ~lurinf, the ~recedin~ three months with ev~~poration
~:ubtrrirtecl (4). Sur.h (ndices do not take intc~ 7ccount the procegsey c~f
~ r~u~isture mL~;ratiun in r.he s~~il which can ptay significr~nt role in the
~�l~,in~;e in m~~isturc content ~~C the upner soLl lnyers, e~pecially durin~;
t he ~~c r lc~d E f r~e z ing u f the so i l and w t t1i Cl~e Wruund wn tc r~~ t a vh~nl l ow _
cl~~pth.
A:. ;iit indirect chnr,~ctrristlc of [he thermophysical processes [ranspiring
~lut-in}; the winter, tn long-range predictions of spring runo`f it is most -
" cu~m~~~~ t~~ u5c the measured depth of soil freezing (4j. Tt~e princtp.~l.
~.hortr.oming of thls indes is t}~at i~ does n~~t alw.tys reflect the tempera-
curc re~ime by tliE~ tim~ of snow melting. In .~ddition, Lt must oe taken
intc~ ,icc