Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia
To investigate the characteristics of ablation at Koryto Glacier, a mountain glacier under maritime climate in Kamchatka Peninsula, Russia, we made field observations from August to early September 2000. At a site near the equilibrium line, the 31-day average net radiation, sensible heat flux, and l...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/4872 2023-05-15T16:22:02+02:00 Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia Konya, Keiko Matsumoto, Takane Naruse, Renji http://hdl.handle.net/2115/4872 https://doi.org/10.1111/j.0435-3676.2004.00236.x eng eng Blackwell Publishing http://hdl.handle.net/2115/4872 Geografiska Annaler: Series A, Physical Geography, 86(4): 337-348 http://dx.doi.org/10.1111/j.0435-3676.2004.00236.x maritime glacier heat balance distributed ablation model Koryto Glacier Kamchatka Peninsula 452.96 article (author version) fthokunivhus https://doi.org/10.1111/j.0435-3676.2004.00236.x 2022-11-18T01:01:10Z To investigate the characteristics of ablation at Koryto Glacier, a mountain glacier under maritime climate in Kamchatka Peninsula, Russia, we made field observations from August to early September 2000. At a site near the equilibrium line, the 31-day average net radiation, sensible heat flux, and latent heat flux were 43, 59 and 31 W-2, respectively. We developed a new distributed ablation model, which only needs measurements of air temperature and global radiation at one site. Hourly ablation rates at this site obtained by the energy balance method are related to measured air temperature and global radiation by linear multiple regression. A different set of multiple regression coefficients is fitted for snow and ice surfaces. Better estimates of ablation rate can be obtained by this approach than by other temperature index models. These equations are then applied to each grid cell of a digital elevation model to estimate spatially distributed hourly melt. Air temperature is extrapolated using a constant temperature lapse rate and global radiation is distributed considering topographic effects. The model enables us to calculate the hourly spatial distribution of ablation rates within the glacier area and could well provide a realistic simulation of ablation over the whole glacier. Article in Journal/Newspaper glacier Kamchatka Kamchatka Peninsula Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Geografiska Annaler: Series A, Physical Geography 86 4 337 348 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
maritime glacier heat balance distributed ablation model Koryto Glacier Kamchatka Peninsula 452.96 |
spellingShingle |
maritime glacier heat balance distributed ablation model Koryto Glacier Kamchatka Peninsula 452.96 Konya, Keiko Matsumoto, Takane Naruse, Renji Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
topic_facet |
maritime glacier heat balance distributed ablation model Koryto Glacier Kamchatka Peninsula 452.96 |
description |
To investigate the characteristics of ablation at Koryto Glacier, a mountain glacier under maritime climate in Kamchatka Peninsula, Russia, we made field observations from August to early September 2000. At a site near the equilibrium line, the 31-day average net radiation, sensible heat flux, and latent heat flux were 43, 59 and 31 W-2, respectively. We developed a new distributed ablation model, which only needs measurements of air temperature and global radiation at one site. Hourly ablation rates at this site obtained by the energy balance method are related to measured air temperature and global radiation by linear multiple regression. A different set of multiple regression coefficients is fitted for snow and ice surfaces. Better estimates of ablation rate can be obtained by this approach than by other temperature index models. These equations are then applied to each grid cell of a digital elevation model to estimate spatially distributed hourly melt. Air temperature is extrapolated using a constant temperature lapse rate and global radiation is distributed considering topographic effects. The model enables us to calculate the hourly spatial distribution of ablation rates within the glacier area and could well provide a realistic simulation of ablation over the whole glacier. |
format |
Article in Journal/Newspaper |
author |
Konya, Keiko Matsumoto, Takane Naruse, Renji |
author_facet |
Konya, Keiko Matsumoto, Takane Naruse, Renji |
author_sort |
Konya, Keiko |
title |
Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
title_short |
Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
title_full |
Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
title_fullStr |
Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
title_full_unstemmed |
Surface Heat Balance and Spatially Distributed Ablation Modelling at Koryto Glacier, Kamchatka Peninsula, Russia |
title_sort |
surface heat balance and spatially distributed ablation modelling at koryto glacier, kamchatka peninsula, russia |
publisher |
Blackwell Publishing |
url |
http://hdl.handle.net/2115/4872 https://doi.org/10.1111/j.0435-3676.2004.00236.x |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Kamchatka Peninsula |
geographic_facet |
Kamchatka Peninsula |
genre |
glacier Kamchatka Kamchatka Peninsula |
genre_facet |
glacier Kamchatka Kamchatka Peninsula |
op_relation |
http://hdl.handle.net/2115/4872 Geografiska Annaler: Series A, Physical Geography, 86(4): 337-348 http://dx.doi.org/10.1111/j.0435-3676.2004.00236.x |
op_doi |
https://doi.org/10.1111/j.0435-3676.2004.00236.x |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
86 |
container_issue |
4 |
container_start_page |
337 |
op_container_end_page |
348 |
_version_ |
1766010001272340480 |