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Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data

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Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data. / Verfaillie, D.; Favier, V.; Dumont, M.; Jomelli, V.; Gilbert, A.; Brunstein, D.; Gallée, H.; Rinterknecht, V.; Menegoz, M.; Frenot, Y.

In: Journal of Geophysical Research - Earth Surface, Vol. 120, No. 3, 30.03.2015, p. 637-654.

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Verfaillie, D, Favier, V, Dumont, M, Jomelli, V, Gilbert, A, Brunstein, D, Gallée, H, Rinterknecht, V, Menegoz, M & Frenot, Y 2015, 'Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data' Journal of Geophysical Research - Earth Surface, vol. 120, no. 3, pp. 637-654. https://doi.org/10.1002/2014JF003329

APA

Verfaillie, D., Favier, V., Dumont, M., Jomelli, V., Gilbert, A., Brunstein, D., ... Frenot, Y. (2015). Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data. Journal of Geophysical Research - Earth Surface, 120(3), 637-654. https://doi.org/10.1002/2014JF003329

Vancouver

Verfaillie D, Favier V, Dumont M, Jomelli V, Gilbert A, Brunstein D et al. Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data. Journal of Geophysical Research - Earth Surface. 2015 Mar 30;120(3):637-654. https://doi.org/10.1002/2014JF003329

Author

Verfaillie, D. ; Favier, V. ; Dumont, M. ; Jomelli, V. ; Gilbert, A. ; Brunstein, D. ; Gallée, H. ; Rinterknecht, V. ; Menegoz, M. ; Frenot, Y. / Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data. In: Journal of Geophysical Research - Earth Surface. 2015 ; Vol. 120, No. 3. pp. 637-654.

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@article{25e24473ad474e569496b5a52c3116c8,
title = "Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data",
abstract = "The retreat of glaciers in the Kerguelen Islands (49°S, 69°E) and their associated climatic causes have been analyzed using field data and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images to validate a positive degree-day (PDD) model forced by data from local meteorological stations. Mass balance measurements made during recent field campaigns on the largest glacier of the Cook Ice Cap were compared to data from the early 1970s, providing a 40 year view of the differences in the spatial distribution of surface mass balance (SMB). To obtain additional regional data for the validation of our models, we analyzed MODIS images (2000-2012) to determine if our model was capable of reproducing variations in the transient snow line. The PDD model correctly simulated the variations in the snow line, the spatial variations in the SMB, and its trend with elevation. Yet current SMB values diverge from their classic linear representation with elevation, and stake data at high altitudes now display more negative SMB values than expected. By analyzing MODIS albedo, we observed that these values are caused by the disappearance of snow and associated feedback on melt rates. In addition, certain parts of Ampere Glacier could not be reproduced by the surface energy balance model because of overaccumulation due to wind deposition. Finally, the MODIS data, field data, and our models suggest that the acceleration of glacier wastage in Kerguelen is due to reduced net accumulation and an associated rise in the snow line since the 1970s.",
author = "D. Verfaillie and V. Favier and M. Dumont and V. Jomelli and A. Gilbert and D. Brunstein and H. Gall{\'e}e and V. Rinterknecht and M. Menegoz and Y. Frenot",
note = "Date of Acceptance: 28/02/2015",
year = "2015",
month = "3",
day = "30",
doi = "10.1002/2014JF003329",
language = "English",
volume = "120",
pages = "637--654",
journal = "Journal of Geophysical Research - Earth Surface",
issn = "2169-9011",
publisher = "John Wiley & Sons, Ltd.",
number = "3",

}

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TY - JOUR

T1 - Recent glacier decline in the Kerguelen Islands (49°S, 69°E) derived from modeling, field observations, and satellite data

AU - Verfaillie, D.

AU - Favier, V.

AU - Dumont, M.

AU - Jomelli, V.

AU - Gilbert, A.

AU - Brunstein, D.

AU - Gallée, H.

AU - Rinterknecht, V.

AU - Menegoz, M.

AU - Frenot, Y.

N1 - Date of Acceptance: 28/02/2015

PY - 2015/3/30

Y1 - 2015/3/30

N2 - The retreat of glaciers in the Kerguelen Islands (49°S, 69°E) and their associated climatic causes have been analyzed using field data and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images to validate a positive degree-day (PDD) model forced by data from local meteorological stations. Mass balance measurements made during recent field campaigns on the largest glacier of the Cook Ice Cap were compared to data from the early 1970s, providing a 40 year view of the differences in the spatial distribution of surface mass balance (SMB). To obtain additional regional data for the validation of our models, we analyzed MODIS images (2000-2012) to determine if our model was capable of reproducing variations in the transient snow line. The PDD model correctly simulated the variations in the snow line, the spatial variations in the SMB, and its trend with elevation. Yet current SMB values diverge from their classic linear representation with elevation, and stake data at high altitudes now display more negative SMB values than expected. By analyzing MODIS albedo, we observed that these values are caused by the disappearance of snow and associated feedback on melt rates. In addition, certain parts of Ampere Glacier could not be reproduced by the surface energy balance model because of overaccumulation due to wind deposition. Finally, the MODIS data, field data, and our models suggest that the acceleration of glacier wastage in Kerguelen is due to reduced net accumulation and an associated rise in the snow line since the 1970s.

AB - The retreat of glaciers in the Kerguelen Islands (49°S, 69°E) and their associated climatic causes have been analyzed using field data and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images to validate a positive degree-day (PDD) model forced by data from local meteorological stations. Mass balance measurements made during recent field campaigns on the largest glacier of the Cook Ice Cap were compared to data from the early 1970s, providing a 40 year view of the differences in the spatial distribution of surface mass balance (SMB). To obtain additional regional data for the validation of our models, we analyzed MODIS images (2000-2012) to determine if our model was capable of reproducing variations in the transient snow line. The PDD model correctly simulated the variations in the snow line, the spatial variations in the SMB, and its trend with elevation. Yet current SMB values diverge from their classic linear representation with elevation, and stake data at high altitudes now display more negative SMB values than expected. By analyzing MODIS albedo, we observed that these values are caused by the disappearance of snow and associated feedback on melt rates. In addition, certain parts of Ampere Glacier could not be reproduced by the surface energy balance model because of overaccumulation due to wind deposition. Finally, the MODIS data, field data, and our models suggest that the acceleration of glacier wastage in Kerguelen is due to reduced net accumulation and an associated rise in the snow line since the 1970s.

U2 - 10.1002/2014JF003329

DO - 10.1002/2014JF003329

M3 - Article

VL - 120

SP - 637

EP - 654

JO - Journal of Geophysical Research - Earth Surface

T2 - Journal of Geophysical Research - Earth Surface

JF - Journal of Geophysical Research - Earth Surface

SN - 2169-9011

IS - 3

ER -

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ID: 190332603