Reanalysis of multi-temporal aerial images of Storglaciären, Sweden (1959-1999) – Part 2: Comparison of glaciological and volumetric mass balances

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Fältnamn	Indikatorer	Metadata
000		03855naa a2200421 4500
001		oai:DiVA.org:su-43329
003		SwePub
008		101007s2010 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-433292 URI
024	7	a https://doi.org/10.5194/tc-4-345-20102 DOI
040		a (SwePub)su
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Zemp, Michaelu Department of Geography, University of Zurich4 aut
245	1 0	a Reanalysis of multi-temporal aerial images of Storglaciären, Sweden (1959-1999) – Part 2: Comparison of glaciological and volumetric mass balances
264		c 2010-09-08
264	1	a Göttingen :b Copernicus,c 2010
338		a print2 rdacarrier
520		a Seasonal glaciological mass balances have been measured on Storglaciären without interruption since 1945/46. In addition, aerial surveys have been carried out on a decadal basis since the beginning of the observation program. Early studies had used the resulting aerial photographs to produce topographic glacier maps with which the in-situ observations could be verified. However, these maps as well as the derived volume changes are subject to errors which resulted in major differences between the derived volumetric and the glaciological mass balance. As a consequence,the original photographs were re-processed using uniform photogrammetric methods, which resulted in new volumetric mass balances for 1959–69, 1969–80, 1980–90, and 1990–99. We compared these new volumetric mass balances with mass balances obtained by standard glaciological methods including an uncertainty assessment considering all related previous studies. The absolute differences between volumetric and the glaciological mass balances are 0.8 m w.e. for theperiod of 1959–69 and 0.3 m w.e. or less for the other survey periods. These deviations are slightly reduced when considering corrections for systematic uncertainties due to differences in survey dates, reference areas, and internal ablation, whereas internal accumulation systematically increases the mismatch. However, the mean annual differences between glaciological and volumetric mass balance are less than the uncertainty of the in-situ stake reading and stochastic error bars of both data series overlap. Hence, no adjustment of the glaciological data series to the volumetric one is required.
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskapx Naturgeografi0 (SwePub)105072 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Physical Geography0 (SwePub)105072 hsv//eng
653		a Physical geography
653		a Naturgeografi
653		a Physical Geography
653		a naturgeografi
700	1	a Jansson, Peter,d 1960-u Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)4 aut0 (Swepub:su)pjans
700	1	a Holmlund, Per,d 1956-u Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)4 aut0 (Swepub:su)pehol
700	1	a Gärtner-Roer, Ingridu Department of Geography, University of Zurich4 aut
700	1	a Koblet, Thomasu Department of Geography, University of Zurich4 aut
700	1	a Thee, Patricku Department of Geography, University of Zurich4 aut
700	1	a Haeberli, Wilfriedu Department of Geography, University of Zurich4 aut
710	2	a Department of Geography, University of Zurichb Institutionen för naturgeografi och kvartärgeologi (INK)4 org
773	0	t The Cryosphered Göttingen : Copernicusg 4, s. 345-357q 4<345-357x 1994-0424
856	4	u https://www.the-cryosphere.net/4/345/2010/tc-4-345-2010.pdf
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-43329
856	4 8	u https://doi.org/10.5194/tc-4-345-2010

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By the author/editor: Zemp, Michael; Jansson, Peter, ...; Holmlund, Per, 1 ...; Gärtner-Roer, In ...; Koblet, Thomas; Thee, Patrick; show more...; Haeberli, Wilfri ...; show less...

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