首页> 外文会议>CryoSat third user workshop >IN-SITU CALIBRATION AND VALIDATION OF CRYOSAT-2 OBSERVATIONS OVER ARCTIC SEA ICE NORTH OF SVALBARD
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IN-SITU CALIBRATION AND VALIDATION OF CRYOSAT-2 OBSERVATIONS OVER ARCTIC SEA ICE NORTH OF SVALBARD

机译:斯瓦尔贝德以北北极海冰上CRYOSAT-2观测的原位校准和验证

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摘要

CryoSat-2’s radar altimeter allows to observe the pan-rnArctic sea ice thickness up to 88°N on a monthly basis.rnHowever, calibration and validation are crucial to assessrnlimitations and accuracy of the altimeter, and to betterrnquantify the uncertainties involved in converting sea icernfreeboard to thickness. We conducted four ship-basedrncampaigns 2010-2012 to the pack ice north of Svalbard.rnDetailed in situ measurements of snow and icernthickness, freeboard, and snow stratigraphy and densityrnwere performed. The data were integrated with satelliterndata, airborne ice thickness observations, and aerialrnphotography. Measurements from a Twin-Otter aircraftrncarrying a laser scanner and the CryoSat airbornernsimulator ASIRAS were obtained over one sea icernstation. Here we discuss effects of snow properties onrnthe penetration of the radar signal into the snow pack,rnalong with in-situ, helicopter, and aircraft measurementsrnfor satellite calibration and validation purposes, basedrnon results from two cruises in 2011.
机译:CryoSat-2的雷达高度计可以每月观测北极地区高达88°N的北极海冰厚度。然而,校准和验证对于评估高度计的局限性和准确性,更好地量化转换海冰的不确定性至关重要。到厚度。我们在斯瓦尔巴特群岛以北的冰层进行了2010-2012年的四次舰船运动。rnn对雪和冰厚度,干舷,雪地层和密度进行了详细的原位测量。数据与卫星数据,机载冰厚观测和航空摄影相结合。在一个海上冰场上,从装有激光扫描仪和CryoSat航空模拟机ASIRAS的双水獭飞机上获得了测量结果。在这里,我们讨论了降雪特性对雷达信号进入积雪的影响,包括实地,直升机和飞机的测量,以进行卫星校准和验证,这是基于2011年两次航行的结果。

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  • 来源
    《CryoSat third user workshop》|2013年|1-4|共4页
  • 会议地点 Dresden(DE)
  • 作者单位

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway Email:gerland@npolar.no;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway;

    Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway Météo France - CRNS, CNRM - GAME URA 1357, CEN, Grenoble, France;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway;

    Finnish Meteorological Institute, P.O. Box 503, FI-00101 Helsinki, Finland;

    York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada;

    Alfred Wegener Institute, Columbusstrasse, D-27568 Bremerhaven, Germany;

    Norwegian Polar Institute, Fram Centre, NO-9296 Troms?, Norway;

    Finnish Meteorological Institute, P.O. Box 503, FI-00101 Helsinki, Finland;

    Alfred Wegener Institute, Columbusstrasse, D-27568 Bremerhaven, Germany;

    Nansen Environmental Remote Sensing Center, Thorm?hlens Gate 47, NO-5006 Bergen, Norway;

    DTU Space, National Space Institute, Technical University of Denmark, Elektrovej, 2800 Kgs Lyngby, Denmark;

    Nansen Environmental Remote Sensing Center, Thorm?hlens Gate 47, NO-5006 Bergen, Norway;

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