Development and Validation of a Biosphere Model for Arctic Tundra with Linkages to Satellite Radiobrightness

该项目的目标是开发和验证与卫星观测相联系的北极冻土带生物圈模型。这些模式为大气环流模式提供陆地-大气边界强迫。通过将生物圈模型与卫星观测相结合，可以监测北极坡上生物圈模型的性能，并可以在国防气象卫星专用传感器微波/成像仪（SSM/I）的37 GHz信道分辨率约为40 km的空间分辨率下估计活动层的深度和水分含量。生物圈模型将改编自国家大气研究中心的生物圈-大气转移计划（BATS），并将大量借鉴我们的密歇根寒区辐射亮度（MCRR）模型。目前，MCRR模型适用于昼夜和年度冻融的草原。新的生物圈模型将通过使用SSM/I数据并通过与其他北极系统科学项目的合作观测，从该项目的实地站点推断到北极斜坡。该项目是对北极系统科学（ARCSS）计划的陆地/大气/冰相互作用部分的贡献。

The objective of the project is to develop and validate a biosphere model for arctic tundra that is linked to satellite observations. Such models provide land-atmosphere boundary forcing for atmospheric circulation models. By linking the biosphere model to satellite observations, performance of the biosphere model over the Arctic Slope can be monitored and an annual estimate of depth and moisture content of the active layer with a spatial resolution of ~40 kmthe resolution of the 37 GHz channel of the Defense Meteorological Satellite's Special Sensor Microwave/Imager (SSM/I) should be possible. The biosphere model will be an adaptation of the National Center for Atmospheric Research's Biosphere-Atmosphere Transfer Scheme (BATS) and will draw heavily from our Michigan Cold Region Radiobrightness (MCRR) model. The MCRR model currently applies to prairie that is subject to diurnal and annual freezing and thawing. The new biosphere model will be extrapolated from this project's field sites to the Arctic Slope in general through use of SSM/I data and through cooperative observations with other Arctic System Science projects. This project is a contribution to the Land/Atmosphere/Ice Interaction component of the Arctic System Science (ARCSS) Program.