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Titolo:
An evaluation of the Wyoming gauge system for snowfall measurement
Autore:
Yang, DQ; Kane, DL; Hinzman, LD; Goodison, BE; Metcalfe, JR; Louie, PYT; Leavesley, GH; Emerson, DG; Hanson, CL;
Indirizzi:
Univ Alaska Fairbanks, Water & Environm Res Ctr, Fairbanks, AK 99775 USA Univ Alaska Fairbanks Fairbanks AK USA 99775 Ctr, Fairbanks, AK 99775 USA Atmospher Environm Serv, Downsview, ON M3H 5T4, Canada Atmospher Environm Serv Downsview ON Canada M3H 5T4 w, ON M3H 5T4, Canada US Geol Survey, Denver, CO 80225 USA US Geol Survey Denver CO USA 80225US Geol Survey, Denver, CO 80225 USA US Geol Survey, Bismarck, ND 58501 USA US Geol Survey Bismarck ND USA 58501 Geol Survey, Bismarck, ND 58501 USA USDA ARS, NW Watershed Res Ctr, Boise, ID 83712 USA USDA ARS Boise ID USA83712 RS, NW Watershed Res Ctr, Boise, ID 83712 USA
Titolo Testata:
WATER RESOURCES RESEARCH
fascicolo: 9, volume: 36, anno: 2000,
pagine: 2665 - 2677
SICI:
0043-1397(200009)36:9<2665:AEOTWG>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNITED-STATES; PRECIPITATION MEASUREMENTS; ACCURACY; MODEL; VARIABILITY; ADJUSTMENT; TRANSPORT; ALASKA; CANADA; BIASES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Yang, DQ Univ Alaska Fairbanks, Water & Environm Res Ctr, Fairbanks, AK 99775 USA Univ Alaska Fairbanks Fairbanks AK USA 99775 banks, AK 99775 USA
Citazione:
D.Q. Yang et al., "An evaluation of the Wyoming gauge system for snowfall measurement", WATER RES R, 36(9), 2000, pp. 2665-2677

Abstract

The Wyoming snow fence (shield) has been widely used with precipitation gauges for snowfall measurement at more than 25 locations in Alaska since thelate 1970s. This gauge's measurements have been taken as the reference forcorrecting wind-induced gauge undercatch of snowfall in Alaska. Recently, this fence (shield) was tested in the World Meteorological Organization Solid Precipitation Measurement Intercomparison Project at four locations in the United States of America and Canada for six winter seasons. At the Intercomparison sites an octagonal vertical Double Fence with a Russian Tretyakov gauge or a. Universal Belfort recording gauge was installed and used as the Intercomparison Reference (DFIR) to provide true snowfall amounts for this intercomparison experiment. The intercomparison data collected were compiled at the four sites that represent a variety of climate, terrain, and exposure. On the basis of these data sets the performance of the Wyoming gauge system for snowfall observations was carefully evaluated against the DFIRand snow cover data. The results show that (1) the mean snow catch efficiency of the Wyoming gauge compared with the DFIR is about 80-90%, (2) there exists a close linear relation between the measurements of the two gauge systems and this relation may serve as a transfer function to adjust the Wyoming gauge records to obtain an estimate of the true snowfall amount, (3) catch efficiency of the Wyoming gauge does not change with wind speed and temperature, and (4) Wyoming gauge measurements are generally compatible to the snowpack water equivalent at selected locations in northern Alaska. Theseresults are important to our effort of determining true snowfall amounts in the high latitudes, and they are also useful for regional hydrologic and climatic analyses.

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Documento generato il 22/09/20 alle ore 20:40:45