Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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
Verification of simulated snow cover in an Arctic basin using satellite-derived snow-cover maps
SMHI, Affärsverksamhet.
2000 (engelsk)Inngår i: ANNALS OF GLACIOLOGY, VOL 31, 2000, 2000, s. 391-396Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Time series of Earth observation (EO) data (Landsat Thematic Mapper (TM), U.S. National Oceanic and Atmospheric Administration Advanced Very High Resolution Radiometer (NOAA AVHRR) and European Remote-sensing Satellite synthetic-aperture radar (ERS SAR)) were obtained for a 2250 km(2) mountainous basin in northern Sweden to validate snow-cover area (SCA) estimates produced by a conceptual model (HBV) during three melt. seasons. SCA depletion curves derived for each image type, and coincident images, reveal that the SCA estimate varies with the sensor. Discrepancies betweenc TM and AVHRR appear to be an effect of spatial resolution. However, differences between TM and SAR are not simply related. Since more AVHRR than TM data were available, a TM-equivalent SCA was derived from AVHRR by relating TM SCA to AVHRR channel 1 reflectance. The TM-equivalent SCA was used to test SCA simulated by HBV for the 1992 melt season. Although the modelled and TM-equivalent SCA were in reasonable agreement, the modelled SCA declined faster than the TM-equivalent SCA. Partial recalibration of model parameters controlling snowpack accumulation improved the match between the modelled and EO-derived SCA decline. The recalibrated parameters were verified using SCA maps generated for the 1996 and 1998 melt seasons. The adjusted parameter sets had little effect on the Nash-Sutcliffe R-2 runoff fit but improved the volume fit in all three years.

sted, utgiver, år, opplag, sider
2000. s. 391-396
Serie
ANNALS OF GLACIOLOGY, ISSN 0260-3055 ; 31
HSV kategori
Forskningsprogram
Hydrologi
Identifikatorer
URN: urn:nbn:se:smhi:diva-1512DOI: 10.3189/172756400781819932ISI: 000166916600063ISBN: 0-946417-26-1 (tryckt)OAI: oai:DiVA.org:smhi-1512DiVA, id: diva2:847052
Konferanse
International Symposium on the Verification of Cryospheric Models, AUG 16-20, 1999, ZURICH, SWITZERLAND
Tilgjengelig fra: 2015-08-19 Laget: 2015-08-17 Sist oppdatert: 2018-01-11bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Personposter BETA

Johansson, Barbro

Søk i DiVA

Av forfatter/redaktør
Johansson, Barbro
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric

doi
isbn
urn-nbn
Totalt: 55 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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
v. 2.35.7
|