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遥感方法可以对区域以至全球尺度的雪盖进行有效监测,根据在光谱的光学波段和微波的各种参数可以描述积雪的反射及发射特性。可见及近红外卫星影像可用以制作积雪面积范围图,这些资料对于气候研究和业务融雪径流预报是很有价值的。航天微波辐射仪资料研究表明:用这种资料可进行积雪面积范围和水当量制图,且具有探测融雪的全天候能力。被动式微波传感器的主要缺点就是空间分辨率较差,这可以用主动式传感器来弥补。合成孔径雷达可以探测湿雪且空间分辨率高。在未来十年中,将发射许多微波传感器,挖掘这一潜力尚需要更艰苦的研究。
Remote sensing methods can effectively monitor snow cover at regional and global scales and describe the snow reflection and emission characteristics based on various parameters of the optical bands and microwaves in the spectrum. Visible and near-infrared satellite imagery can be used to create snow cover maps that are valuable for climate research and operational snowmelt runoff forecasting. Aerospace microwave radiometer data show that: With this information can be snow area area and water equivalence mapping, and have the ability to detect snow melting around the clock. The main disadvantage of passive microwave sensors is their poor spatial resolution, which can be offset by active sensors. Synthetic aperture radar can detect wet snow and high spatial resolution. In the next decade, many microwave sensors will be launched to explore the potential of more difficult research.