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一个与卫星观测相联系的北极苔原生物圈模型。这些模式为大气环流模式提供了陆-气边界强迫。 通过将生物圈模型与卫星观测相联系，可以监测生物圈模型在北极斜坡上空的运行情况，并有可能利用国防气象卫星的特殊传感器微波/成像仪（SSM/I）的37 GHz信道的空间分辨率对活跃层的深度和含水量进行年度估计。 生物圈模型将是国家大气研究中心的生物圈-大气传输计划（BATS）的改编，并将大量借鉴我们的密歇根州寒冷地区辐射亮度（MCRR）模型。 MCRR模型目前适用于草原，是受昼夜和年度冻结和解冻。 新的生物圈模型将通过使用SSM/I数据和通过与其他北极系统科学项目的合作观测，从该项目的实地地点外推到整个北极斜坡。 该项目是对北极系统科学计划的陆地/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.