Reconciling Solid Earth and Ice Sheet Temperature Estimates for Greenland

在我们提出的项目中，我们计划分析格陵兰冰盖和岩石圈的热状态，重点是协调两个地球空间的温度估计。现有模型存在相当大的差异，我们首先对地热观测和冰温剖面的不确定性进行了稳健的地统计学分析。这些点/剖面估计将首先通过使用航空测量的辅助地球物理数据（雷达、重力、磁力）在局部尺度上联系起来，以验证估计的兼容性。在第二步中，我们将利用SMOS卫星任务的温度估计和所有可用的地球物理数据将分析扩展到整个冰盖，以描述冰顶床界面底部的热状态和地质条件。我们还将扩展我们的分析，通过使用潜在改进的冰温模型来评估可能性，这是CryoRad卫星任务的目标之一，该任务被欧洲航天局提议作为地球探索者呼叫12的候选之一。所有热模型都将作为冰盖动力学模型的输入进行测试，重点是澄清东北格陵兰冰流开始时的热异常的作用。

In our proposed project, we plan to analyse the thermal state of the Greenland ice sheet and lithosphere with a focus on reconciling temperature estimates for the two geospaces. Considerable differences exist in existing models and we first carry out robust geostatistical analysis of the uncertainties of both geothermal observations and ice temperature profiles. These point/profile-wise estimates will be first linked on a local scale by using auxiliary geophysical data (radar, gravity, magnetics) from airborne surveys in order to verify the compatibility of the estimates. In the second step, we will extend the analysis to the entire ice-sheet using temperature estimates from the SMOS satellite mission and all available geophysical data to describe both the thermal state and the geological conditions at the base of the ice-top bed interface. We will also extend our analysis to assess possibility by using a potentially improved ice temperature model, which is one of the objectives of the CryoRad satellite mission proposed as one candidate for the Earth Explorer Call 12 by the European Space Agency. All thermal models will be tested as input in models of the ice-sheet dynamics with a focus on clarifying the role of a thermal anomaly at the onset of the Northeast Greenland ice stream.