TITLE

Evidence of climate change impact upon glaciers' recession within the Italian Alps

AUTHOR(S)
Diolaiuti, G.; Bocchiola, D.; D'agata, C.; Smiraglia, C.
PUB. DATE
July 2012
SOURCE
Theoretical & Applied Climatology;Jul2012, Vol. 109 Issue 1/2, p429
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present evidence of climate change impact upon recent changes of glaciers within Lombardy region, in Northern Italy. We illustrate the recent area evolution of a set of 249 glaciers in the area using three surface area records for 1991, 1999 and 2003. The 1999 and 2003 surface area data are processed by combining glacier limits manually digitized upon registered color orthophotos and differential GPS (DGPS) glaciers' surveys. Glaciers' area was 117.4 km in 1991, 104.7 km in 1999, and to 92.4 km 2003, with a 21% reduction. Glaciers smaller than 1 km accounted for 53% of the total loss in area (13.1 km during 1991-2003). The area change rate was higher lately, with ca. 11.7 % reduction during 1999-2003. We split Alps and fore Alps of Lombardy into six mountain groups, and we separately investigate relative area variations. We use climate series from local stations within each group to assess climate change during a 30-year window (1976-2005). We focus upon temperature and snow cover depth at thaw, known to impact glaciers' changes. We compare local year-round temperature anomalies against global ones to evidence enhanced warming within this area, and we investigate the correlation of our target climate variables against NAO. Eventually, we highlight the link between the rate of change of our climate variables to the observed scaling of area loss against glaciers' size, showing that in rapidly warming areas glaciers' size affects less relative melting.
ACCESSION #
78141712

 

Related Articles

  • Ice surface-elevation change and velocity of Qingbingtan glacier No.72 in the Tomor region, Tianshan Mountains, central Asia. Wang, Puyu; Li, Zhongqin; Li, Huilin; Wang, Wenbin; Wang, Feiteng // Journal of Mountain Science;Dec2011, Vol. 8 Issue 6, p855 

    Glaciers in the Tomor region of Tianshan Mountains preserve vital water resources. However, these glaciers suffer from strong mass losses in the recent years because of global warming. From 2008 to 2009, a large-scale scientific expedition has been carried out in this region. As an individual...

  • The 1975–2005 glacier changes in Aosta Valley (Italy) and the relations with climate evolution. Diolaiuti, G.A.; Bocchiola, D.; Vagliasindi, M.; D’Agata, C.; Smiraglia, C. // Progress in Physical Geography;Dec2012, Vol. 36 Issue 6, p764 

    Here three glacier surface area records (years 1975, 1999 and 2005) available for Aosta Valley (western Italian Alps) have been synthesized. The 1975 data have been collected by previous authors who compiled the first Aosta Valley regional glacier database. The 1999 and 2005 surface area data...

  • The History and Disappearance of Glaciers in Venezuela. Braun, Carsten; Bezada, Maximiliano // Journal of Latin American Geography;2013, Vol. 12 Issue 2, p85 

    The disappearance of glaciers is Venezuela is chronicled through an extensive compilation and discussion of the scientific literature, maps, and historical photographs. Climate data analysis and GPS mapping in 2009 and 2011 provide the modern context. 20th-century glacier recession in Venezuela...

  • Evidence towards a thermal lag in the response of KÃ¥rsaglaciären, northern Sweden, to climate change. Rippin, David M.; Carrivick, Jonathan L.; Williams, Christopher // Journal of Glaciology;2011, Vol. 57 Issue 205, p895 

    The article discusses a study of a possible thermal lag in the climate change response of the glacier Kårsaglaciären in northern Sweden. A total of 3,191 meters (m) of ground-penetrating radar (GPR) data were collected during the common-offset GPR survey conducted in March 2009. The GPR...

  • Glacier Recession on Heard Island, Southern Indian Ocean. Thost, Douglas E.; Truffer, Martin // Arctic, Antarctic & Alpine Research;Feb2008, Vol. 40 Issue 1, p199 

    Glacier retreat has been widespread on Heard Island, an isolated 2745-m-high volcano in the southern Indian Ocean, since the first observations in 1947. This study represents the first quantification of the mass loss of a Heard Island glacier. Brown Glacier is 4.8 km long and is land...

  • Glacier volume calculation from ice-thickness data for mountain glaciers-A case study of glacier No. 4 of Sigong River over Mt. Bogda, eastern Tianshan, Central Asia. Wang, Puyu; Li, Zhongqin; Wang, Wenbin; Li, Huilin; Wang, Feiteng // Journal of Earth Science;Apr2014, Vol. 25 Issue 2, p371 

    The determination of total glacial volume is important for the observation of climatic change and its consequences such as global sea-level rise. The tongue area of Glacier No. 4 of Sigong River over Mt. Bogda, eastern Tianshan was surveyed by ground-penetrating radar (GPR) and real time...

  • Tidally-induced velocity variations of the Beardmore Glacier, Antarctica, and their representation in satellite measurements of ice velocity. Marsh, O. J.; Rack, W.; Floricioiu, D.; Golledge, N. R.; Lawson, W. // Cryosphere Discussions;2013, Vol. 7 Issue 2, p1761 

    Ocean tides close to the grounding line of outlet glaciers around Antarctica have been shown to directly influence ice velocity, in both linear and non-linear patterns. These fluctuations can be significant and have the potential to affect satellite measurements 5 of ice discharge which assume...

  • Glacial Clues to Global Warming. Mark, Bryan // GPS World;Jul2001, Vol. 12 Issue 7, p20 

    Discusses glacial clues to global warming. Use of terrain modeling and geomorphology; Use of Global Positioning System to study glacial clues.

  • Glacier NW programs GPS, wireless tracking system.  // Concrete Products;Nov2003, Vol. 106 Issue 11, p34 

    Reports on Glacier Northwest's Global Positioning System and wireless communications-enabled system for internal use. Standard hardware for the system.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics