Journal of Geo-information Science ›› 2015, Vol. 17 ›› Issue (11): 1341-1347.doi: 10.3724/SP.J.1047.2015.01341

Previous Articles     Next Articles

Validation of AVHRR, IMS and MODIS Snow Cover Products in North of China

CAO Dongjie(), ZHENG Zhaojun*(), TANG Shihao, WANG Yuanxiang   

  1. 1. Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA), National Satellite Meteorological Center, Beijing 100081, China;2. National Satellite Meteorological Center, Beijing 100081, China;
  • Received:2015-03-16 Revised:2015-09-10 Online:2015-11-10 Published:2015-11-10
  • Contact: ZHENG Zhaojun E-mail:caodj@cma.gov.cn;zhengzj@cma.gov.cn
  • About author:

    *The author: CHEN Nan, E-mail:fjcn99@163.com

Abstract:

Comparing with other satellite sensors, AVHRR has the capability to analyze more than 10 years of medium-resolution satellite imagery on a daily basis. AVHRR thereby holds a great potential to detect, map and quantify long-term environmental changes. However, different satellites use different retrieval algorithms, wavelength bandwidths and atmospheric validations. So it is important to compare different snow cover products retrieved by different satellites. Here, we describe and extensively validate the snow cover products of the historical 0.05°×0.05° AVHRR data. The spatial and seasonal validation includes a comparison with IMS and MOD10A1. It is found that the AVHRR snow products are in good accordance with the MODIS snow products. The influence of acquisition geometry and the sensor-to-sensor consistency will be discussed in future.

Key words: snow cover products, AVHRR, IMS, MODIS, consistency check (correspondence analysis)