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Monitoring Snow Cover with TOVS Data
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摘要: 该文提出了利用TOVS的MSU-1（微波辐射仪的第一通道、中心频率50.31 GHz）、HIRS/2-8（高分辨率红外辐射仪的第八通道、中心波长11.10 μm）、HIRS/2-19（中心波长3.70μm）及HIRS/2-20（中心波长0.70 μm）光谱特性的差异进行云的检测，以及在晴空条件下测雪的方法。该方法测出的1993年1月我国东部地区和1991年1月西藏高原东部地区降雪过程的积雪图，与实况相符。Abstract: The methods of detecting cloud and monitoring snow cover in clean sky are put forward by using the spectral difference of MSU-1 (Microwave radiometer CH1, the central frequency 50.31 GHz)﹑HIRS/2-8 (High resolution infrared radiometer CH8, central wavelength 11.10 μm)﹑HIRS/2-19 (central wavelength 3.70 μm) and HIRS/2-20 (Central wavelength 0.70 μm) of TOVS. The snow cover charts of the snow processes for eastern China in Jan. 1993 and the eastern Tibet Plateau in Jan. 1991 with the method mentioned above are in accord with the observational data.
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Key words:
- TOVS data;
- Spectral characteristics;
- Cloud detection;
- Snow survey
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