Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Field evaluation of a new method for estimation of liquid water content and snow water equivalent of wet snowpacks with GPR
SMHI, Forskningsavdelningen, Meteorologi.
2013 (engelsk)Inngår i: HYDROLOGY RESEARCH, ISSN 1998-9563, Vol. 44, nr 4, s. 600-613Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Estimates of snow water equivalent (SWE) with ground-penetrating radar can be used to calibrate and validate measurements of SWE over large areas conducted from satellites and aircrafts. However, such radar estimates typically suffer from low accuracy in wet snowpacks due to a built-in assumption of dry snow. To remedy the problem, we suggest determining liquid water content from path-dependent attenuation. We present the results of a field evaluation of this method which demonstrate that, in a wet snowpack between 0.9 and 3 m deep and with about 5 vol% of liquid water, liquid water content is underestimated by about 50% (on average). Nevertheless, the method decreases the mean error in SWE estimates to 16% compared to 34% when the presence of liquid water in snow is ignored and 31% when SWE is determined directly from two-way travel time and calibrated for manually measured snow density.

sted, utgiver, år, opplag, sider
2013. Vol. 44, nr 4, s. 600-613
Emneord [en]
ground-penetrating radar, liquid water content, path-dependent attenuation, radar wave propagation velocity, snow water equivalent, wet snow
HSV kategori
Forskningsprogram
Hydrologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-404DOI: 10.2166/nh.2012.182ISI: 000321953200003OAI: oai:DiVA.org:smhi-404DiVA, id: diva2:800014
Tilgjengelig fra: 2015-04-01 Laget: 2015-03-31 Sist oppdatert: 2020-05-13bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Person

Gustafsson, Nils

Søk i DiVA

Av forfatter/redaktør
Gustafsson, Nils
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 101 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf