Logo: to the web site of Uppsala University

uu.sePublications from Uppsala University
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Investigation on surface energy fluxes and their relationship to synoptic weather patterns on Storglaciären, northern Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2001 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A meteorological station was operated in the ablation area close to the equilibrium line on Storglaciären, northern Sweden, during the ablation seasons of 1998 to 2000. The station recorded longwave and shortwave radiation, air temperature, humidity, precipitation, wind speed and wind direction. The data were used to calculate the energy balance, applying the bulk-aerodynamic approach for turbulent fluxes, and to calculate melt rates under the investigation periods. The calculated cumulative melt was compared to melt measured by a SR50 Sonic Ranging Sensor. Results show that calculated melt overestimates measured melt in 1998. Comparison for calculated and measured cumulative melt in 2000 show good agreement, while the estimation of cumulative melt in 1999 is problematic due to repeated snowfall under the ablation season.

Net radiation is the main energy source, contributing 50% of all energy available for melt, sensible heat contributing between 21% and 38%, latent heat 11% - 16%, and energy released by the sensible heat of rain less than 3%. This energy partitioning compares well to other investigations on glaciers in maritime climate.

The variations in the energy balance and melt rates were found to be more sensitive to variations in the sensible heat fluxes than to variations in net radiation.

Short-term high melt rates in August seem to occur when a cyclone traverses over northern Scandinavia from the northwest. Events of stable high-pressures over northern Scandinavia do not bring high melt rates, but are merely giving moderate or average melt rates. 

Place, publisher, year, edition, pages
2001. , p. 43
Series
Examensarbete vid Institutionen för geovetenskaper, ISSN 1650-6553 ; 5
Keywords [en]
Northern Scandinavia, Storglaciären, surface energy balance on glaciers, melt rates, synoptic weather patterns.
Identifiers
URN: urn:nbn:se:uu:diva-474556OAI: oai:DiVA.org:uu-474556DiVA, id: diva2:1658748
Subject / course
Physical Geography
Note

Arkivexemplar i Uppsala universitets arkiv

Available from: 2022-05-19 Created: 2022-05-17 Last updated: 2022-05-19Bibliographically approved

Open Access in DiVA

No full text in DiVA

By organisation
Department of Earth Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 78 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf