摘要
根据微波遥感积雪的原理 ,提出了利用NOAA 1 6AMSU的 1通道 ( 2 3.8GHz)、2通道( 31 .4GHz)和 1 5通道 ( 89.0GHz)等 3个通道监测中国五大区域雪盖范围的初步判识方法。由该方法制作合成了 2 0 0 1年 1 0月 1日至 2 0 0 2年 4月 1日中国地区的周积雪覆盖监测图 ,与来自全国气象台站的地面积雪观测记录以及美国人机交互式冰雪制图系统 (InteractiveSnowandIceMappingSystem ,IMS)的雪盖图、SSM/I (SpecialSensorMicrowaveImager)雪盖图的比较结果表明 :AMSU监测结果不仅具有比较高的准确性 ,而且其准确性和可靠性达到甚至优于其它两种积雪监测结果 (尤其是雪季中期 )。
The territory of China was divided into five areas,and a primary method for each area was proposed to monitoring snow-cover over China, using the data from channel 1, 2, 15 of NOAA-16 AMSU. With these methods, weekly compositive snow-cover maps of China were achieved during the period of October 1, 2001 to April 1, 2002. The comparison of the ground snow-depth record from the meteorological stations all around the country with snow-cover maps mapped by NOAA Interactive Snowand Ice Mapping System (IMS), and from SSM/I (Special Sensor Microwave Imager) data were used to examine the reliability of the snow-cover maps form AMSU in detail. Analysis result shows that the discrimination of AMSU snow-cover maps is good, and the correctness of AMSU snow-cover maps is close or even superior to those of IMS and SSM/I, especially during the medium-term of the snow season.
出处
《应用气象学报》
CSCD
北大核心
2005年第1期35-44,共10页
Journal of Applied Meteorological Science
基金
"国家高技术研究发展计划 ( 863计划 )--多光谱卫星遥感雪盖范围
雪深和雪水当量 ( 2 0 0 2AA1 3 5 2 5 0 )"课题资助
"我国西北地区生态气候环境监测预测方法研究"课题共同资助
