GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season

Michael G Bevis; John M Wahr; Shfaqat Abbas Khan; Finn Bo Madsen; Abel K Brown; Michael J Willis; Eric C Kendrick; Per Knudsen; Tonie M van Dam; Jason E  Box; Dana John Caccamise; Bjorn Johns; Thomas Nylen; Robin Abbott; Seth White; René Forsberg; Hao Zhou; Olivier Francis; Jian Wang; Terry J Wilson

GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season

Michael G Bevis, John M Wahr, Shfaqat Abbas Khan, Finn Bo Madsen, Abel K Brown, Michael J Willis, Eric C Kendrick, Per Knudsen, Tonie M van Dam, Jason E Box, Dana John Caccamise, Bjorn Johns, Thomas Nylen, Robin Abbott, Seth White, René Forsberg, Hao Zhou, Olivier Francis, Jian Wang, Terry J Wilson

Research output: Contribution to conference › Conference abstract for conference › Research

Abstract

The Greenland GPS Network (GNET) uses GPS geodesy to measure the displacement of bedrock exposed near the margins of the Greenland Ice Sheet. The amplitudes of the observed vertical velocities indicate that over most of coastal Greenland these displacements are dominated by the solid earth’s instantaneous elastic response to contemporary losses in ice mass. Superimposed on longer term trends, an anomalous ‘pulse’ of uplift accumulated at many GNET stations during a ~5 month period in 2010, and we will show that this anomalous uplift is spatially correlated with the 2010 melting day anomaly (Tedesco et al., 2011). This result confirms the ability of GPS networks in Greenland, Antarctica and elsewhere to directly sense ice mass changes at sub-annual as well as longer timescales. GNET and similar GPS networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission. This result also suggests that ice mass varies over a range of time scales, rather like sea level.

Original language	English
Publication date	2011
Publication status	Published - 2011
Event	2011 AGU Fall Meeting - San Francisco, CA, United States Duration: 5 Dec 2011 → 9 Dec 2011 http://fallmeeting.agu.org/2011/

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Conference	2011 AGU Fall Meeting
Country/Territory	United States
City	San Francisco, CA
Period	05/12/2011 → 09/12/2011
Internet address	http://fallmeeting.agu.org/2011/

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Bevis, M. G., Wahr, J. M., Khan, S. A., Madsen, F. B., Brown, A. K., Willis, M. J., Kendrick, E. C., Knudsen, P., van Dam, T. M., Box, J. E., Caccamise, D. J., Johns, B., Nylen, T., Abbott, R., White, S., Forsberg, R., Zhou, H., Francis, O., Wang, J., & Wilson, T. J. (2011). GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season. Abstract from 2011 AGU Fall Meeting, San Francisco, CA, United States.

@conference{e87e15c73fb04d3581e19473d276813c,

title = "GNET detected an anomalous {"}spike{"} in ice loss in Greenland during the 2010 melting season",

abstract = "The Greenland GPS Network (GNET) uses GPS geodesy to measure the displacement of bedrock exposed near the margins of the Greenland Ice Sheet. The amplitudes of the observed vertical velocities indicate that over most of coastal Greenland these displacements are dominated by the solid earth{\textquoteright}s instantaneous elastic response to contemporary losses in ice mass. Superimposed on longer term trends, an anomalous {\textquoteleft}pulse{\textquoteright} of uplift accumulated at many GNET stations during a ~5 month period in 2010, and we will show that this anomalous uplift is spatially correlated with the 2010 melting day anomaly (Tedesco et al., 2011). This result confirms the ability of GPS networks in Greenland, Antarctica and elsewhere to directly sense ice mass changes at sub-annual as well as longer timescales. GNET and similar GPS networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission. This result also suggests that ice mass varies over a range of time scales, rather like sea level.",

author = "Bevis, {Michael G} and Wahr, {John M} and Khan, {Shfaqat Abbas} and Madsen, {Finn Bo} and Brown, {Abel K} and Willis, {Michael J} and Kendrick, {Eric C} and Per Knudsen and {van Dam}, {Tonie M} and Box, {Jason E} and Caccamise, {Dana John} and Bjorn Johns and Thomas Nylen and Robin Abbott and Seth White and Ren{\'e} Forsberg and Hao Zhou and Olivier Francis and Jian Wang and Wilson, {Terry J}",

year = "2011",

language = "English",

note = "2011 AGU Fall Meeting, AGU 2011 ; Conference date: 05-12-2011 Through 09-12-2011",

url = "http://fallmeeting.agu.org/2011/",

}

Bevis, MG, Wahr, JM, Khan, SA , Madsen, FB, Brown, AK, Willis, MJ, Kendrick, EC, Knudsen, P, van Dam, TM, Box, JE, Caccamise, DJ, Johns, B, Nylen, T, Abbott, R, White, S, Forsberg, R, Zhou, H, Francis, O, Wang, J & Wilson, TJ 2011, 'GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season', 2011 AGU Fall Meeting, San Francisco, CA, United States, 05/12/2011 - 09/12/2011.

TY - ABST

T1 - GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season

AU - Bevis, Michael G

AU - Wahr, John M

AU - Khan, Shfaqat Abbas

AU - Madsen, Finn Bo

AU - Brown, Abel K

AU - Willis, Michael J

AU - Kendrick, Eric C

AU - Knudsen, Per

AU - van Dam, Tonie M

AU - Box, Jason E

AU - Caccamise, Dana John

AU - Johns, Bjorn

AU - Nylen, Thomas

AU - Abbott, Robin

AU - White, Seth

AU - Forsberg, René

AU - Zhou, Hao

AU - Francis, Olivier

AU - Wang, Jian

AU - Wilson, Terry J

PY - 2011

Y1 - 2011

N2 - The Greenland GPS Network (GNET) uses GPS geodesy to measure the displacement of bedrock exposed near the margins of the Greenland Ice Sheet. The amplitudes of the observed vertical velocities indicate that over most of coastal Greenland these displacements are dominated by the solid earth’s instantaneous elastic response to contemporary losses in ice mass. Superimposed on longer term trends, an anomalous ‘pulse’ of uplift accumulated at many GNET stations during a ~5 month period in 2010, and we will show that this anomalous uplift is spatially correlated with the 2010 melting day anomaly (Tedesco et al., 2011). This result confirms the ability of GPS networks in Greenland, Antarctica and elsewhere to directly sense ice mass changes at sub-annual as well as longer timescales. GNET and similar GPS networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission. This result also suggests that ice mass varies over a range of time scales, rather like sea level.

AB - The Greenland GPS Network (GNET) uses GPS geodesy to measure the displacement of bedrock exposed near the margins of the Greenland Ice Sheet. The amplitudes of the observed vertical velocities indicate that over most of coastal Greenland these displacements are dominated by the solid earth’s instantaneous elastic response to contemporary losses in ice mass. Superimposed on longer term trends, an anomalous ‘pulse’ of uplift accumulated at many GNET stations during a ~5 month period in 2010, and we will show that this anomalous uplift is spatially correlated with the 2010 melting day anomaly (Tedesco et al., 2011). This result confirms the ability of GPS networks in Greenland, Antarctica and elsewhere to directly sense ice mass changes at sub-annual as well as longer timescales. GNET and similar GPS networks can therefore mitigate the loss of ice mass measurements following the anticipated termination of the GRACE satellite mission. This result also suggests that ice mass varies over a range of time scales, rather like sea level.

M3 - Conference abstract for conference

T2 - 2011 AGU Fall Meeting

Y2 - 5 December 2011 through 9 December 2011

ER -

GNET detected an anomalous "spike" in ice loss in Greenland during the 2010 melting season

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