中国北部地区卫星积雪产品数据集检验
作者简介:曹冬杰(1980-),男,河北石家庄人,博士,助理研究员,研究方向为卫星遥感产品应用与数据分析。E-mail: caodj@cma.gov.cn
收稿日期: 2015-03-16
要求修回日期: 2015-09-10
网络出版日期: 2015-11-10
基金资助
公益性行业(气象)科研专项“卫星遥感全球下垫面类型数据集研制“(GYHY201106014)资助
公益性行业(气象)科研专项“青藏高原遥感积雪气候数据集建设”(GYHY201206040)
新疆维吾尔族自治区科技支疆项目“北疆雪水资源遥感监测分析服务平台建设”(2013911104)
Validation of AVHRR, IMS and MODIS Snow Cover Products in North of China
Received date: 2015-03-16
Request revised date: 2015-09-10
Online published: 2015-11-10
Copyright
曹冬杰 , 郑照军 , 唐世浩 , 王园香 . 中国北部地区卫星积雪产品数据集检验[J]. 地球信息科学学报, 2015 , 17(11) : 1341 -1347 . DOI: 10.3724/SP.J.1047.2015.01341
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)
Tab. 1 Contingency table showing the comparison between two snow cover products analyses, in which a-d represent the different number of pixels observed to occur in each type表1 积雪产品比较列联表 |
基准产品 | |||
---|---|---|---|
有雪 | 无雪 | ||
AVHRR 积雪产品 | 有雪 | a (相同) | b (虚报) |
无雪 | c (漏报) | d (不同) |
Fig. 1 Comparison between AVHRR and IMS(AI) snow products,IMS and MODIS(MI)snow cover products,AVHRR and MODIS(AM) snow products on the north of China during 2005 to 2008图1 2005-2008年中国北部地区IMS和AVHRR(AI),IMS和MODIS(MI),AVHRR和MODIS(AM)积雪产品比较 |
Fig. 2 The monthly averaged evaluation configurations of snow cover product图2 积雪产品评价指标的月均值变化 |
Fig. 3 Comparison between the AVHRR and IMS snow cover products from November 2007 to April 2008图3 2007年11月至2008年4月AVHRR和IMS积雪产品对比分析图 |
Fig. 4 Comparison between the AVHRR and MODISsnow cover products from November 2007 to April 2008图4 2007年11月至2008年4月AVHRR和MODIS积雪产品对比分析图 |
The authors have declared that no competing interests exist.
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
/
〈 | 〉 |