Laserfiche WebLink
<br />~.2ll9O(~"1J <br />Suo..... "" ~ooeta......l.". <br /> <br />"J1' ,~~ <br />IJ ..., LV <br /> <br />, ' <br /> <br />, <br /> <br />1 REPORT NO. r2.,OOVE~MeNT ACCESSION 1iO. 3. RECIPIENTS CATALOG NO. <br />R-93-3 <br />~. TITLE AND SUBTITLE Validation of Precipitation Management s. REPORT 04TE <br />by Seeding Winter Orographic Clouds in the Colorado February 1993 <br />River Basin 6. PERFORMING ORGANIZATION COOE <br /> D-3720 <br />1. AUTHOA(Sj 8. PERFORMING ORGANIZATION <br />Arlin B. Super, John C. Lease, Jack T. McPartland REPORT NO. <br /> R.93-3 <br />9, PERFORMJNG ORGANIZATIO~AME AND ADDRESS 10. 'NORr< UNIT NO. <br />Bureau of Reclamation 11. CONTRACT OR GRANT NO. <br />Denver Office <br />Denver CO 80225 13. TYPE OF REPORT AND PERIOD COVERED <br />12. SPONSORING AGENCY NAME AND ADDRESS <br /> DIBR <br />Same <br /> I.. SPONSORING AGENCY COOE <br />15. SUPPlEMENTARY NOTES <br />Microfiche and hard copy available at the Denver Office, Denver, Colorado. Ed: TH <br />16_ ABSTRACT Reclamation (Buruu of Reclamation), in eooperatWln with tbe Colorado River Basin States. developed a <br />."Ian for a pl"eC'1Pltation management demonstration p~am titled tbe CREST (Colorado River Enhanced Snow pack <br />est). The program's PUZO$e i.!J to develop' scientific eVlde~ that properly lXInducted seeding of winter orogralfbic <br />{mounlain_inducedl dou can 'ignificantlr increue high elevation InoW(all in the Colorldo River Ba.~in. be <br />m\lltlWln~r masrnit\lde o( the prec:i'pltation lD.~_ will be quantified at t....o mo\lnWn locatiora typical of the Upper <br />Colorado River 8asin. <br />Stati.~tical analysel o( $Orne operational ud elrperimental projects in the wea~m United Statfl and elsewhere have <br />pmvided strong i.ndieations o( snowfall enhancement (rom ....inter orographic dO\ld .!Jl!eding. However. IIJpporting phv!lic:al <br />documentation i.!I lachnR. The.pro~ prnt';am will build on the .n~nl{th of past eJlperience and rewlts to proVia", <br />COnVl.QCUlI{ physical and ,tatlstlcal eVldenc:e t at doud leedia~ can Ilgmfic:antly enhance the mountain StIOwpac:k. <br />The program ....ilI beJlln with environmental ttlmpliance actlV1tl('tl, and pnx:urement o( CXIntract.a and equipment. Both <br />cJ:perimentalloCl1tions "'ill tben have a three.winter phylrical eXJK'riment phase. (ollowed by a {our.winter statisticaV <br />physical th~~e. <br />.. The P-?,SICal phase will he devoted to -direct detection- eJl:perUnents which will monitor the major linb in the chain <br />of physic events folJowinl{ .!Jeeding. The purpose o( thi, phue is to markedly inc:re~hl:ieal understanding o( the <br />imlfdrtant doud and pret1~itatlOn PI'Ol:l.>S!lE!' to winter douch. and how thoy are aCli Ileeding. This phase will <br />va . date the physical hyp:lt ('tIis o( ....inter o~llphic doud IleedialJ and doe\Iment the rllnlft' o( meteorololtical ttlnditiora <br />under which It II acplicable. This understanding is needed (or deSlll"P ofthe !IeOJpd phase. <br />. The statinica ph)'llical ph~ will COnsist o( a randomized ,eedinf prolfn.m with a alronll' phYSical monitaring <br />component. The PuI"p)5e of this ph8.!lEl is to demonstrate that snowf-.l can be increased over a larlJl't -.rea over a <br />m\lltiwlnter peritid. and to quantify the rna!f!llt\lde of tbe increase. The lIlatistieal esr:riment will ngoroully tt'lJt a <br />precl.!Jely stated hypothesis. \Ising R1"-edetermlDed se-edinR and observational criteria, an collfmnatary analysis. At the <br />lIame time, exploratory anallllis WI be \lied to broaden underslandinR and applicability o( tbe relults. Any statistical <br />results m\lst be physically p a\lsible to be ttln.sidered convint1nR. <br />The lXImblDatlOn o( alnfll'matory atati,tical analylri~ and supporting phylrical OMt-rvations (or a lar~ subset o( the <br />expenmental \lnita. i, expeCted to provide the lcientific evidence needed to place thi, developing technO ~ on a much <br />firmer foundation. The res\lltin~ technology III expected to be readill trans(ernble thJ"O\lRho\lt the Colorado ive-r Basin. <br />and. to a lesser del!'n'E', to ot er mountain rE'.Il101l.$ o( the wort . To expedite the tran.s(erability o( the technoloto;: <br />throu!!hout the Basin, more lilnited observational prnElllnS and n\lmerical modeling invelrtiJl8tioD!I will be ttlnduc:ted or <br />other repreSE'ntatlve mo\lnt8ln re)lions durin!! tbe CR ST program. <br />17. I(EY WORDS AND DOCUMENT ANAL'I'SI5 <br />8. DESCRJPTORS_ atmospheric research! meteorology! weather modification! orographic <br />cloudsl cloud seeding! meteorolOgical instruments <br />b. JDENnFIERS- American Meteorological Society! Council on Environmental Qualityl <br />Colorado River Basin Pilot ProjectJ Colorado River Enhanced Snowpack TestJ Fish and Wildlife <br />Coordination ActJ High Plains Cooperative Program Experimentl National Center for <br />Atmospheric Research! Sierra Cooperative Pilot Pt-ojectJ World Meteorological Organization <br />c. COSA T1 Field/Group O4B COWRR: 04 02.1 SRIM: <br />lB. OlSTRI6UTION STATE'-'ENT HI SECURlTV CLASS 21 NO. OF PAGES <br /> """......., 158 <br /> -, <br /> 20. SECURITY CLASS 22. PRICE <br /> """,- <br /> ~ <br /> <br />TECHNICAL REPORT STANDARD TITLE PAGE <br />