AVHRR-derived fire frequency, distribution and area burned in Siberia
AVHRR-derived fire frequency, distribution and area burned in Siberia
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AVHRR 得出的西伯利亚火灾频率、分布和燃烧面积
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
P. W. Stackhouse Jr
中科院分区：
文献类型：
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作者：
A. Soja;A. Sukhinin;D. R. Cahoon Jr;H. Shugart;P. W. Stackhouse Jr
高级甚高分辨率辐射计（AVHRR）的数据被用来产生一个活跃的火灾探测产品的火灾季节在1999年和2000年和1996-2000年的面积烧毁产品。火灾的分布范围从西部的乌拉尔山脉到东部海岸，从南部的半干旱草原地区到北部的针叶林。观测到4月从北纬40°以北到7月中旬从北纬60°以北迁移的火灾时空格局。8月火灾范围很广，覆盖整个地理范围。与这些模式相反，从这些数据中看不出类似的东西向迁移。在1999年和2000年，在北纬50 °和55°之间的5月初检测到活跃火计数的峰值。俄罗斯的野火每年和年际变化很大，报告的烧毁面积每年从23.4万公顷到1330万公顷不等。将俄罗斯的火灾统计数据与本次调查和以前的卫星数据进行比较，我们发现俄罗斯的火灾面积通常被低估了213%。这种程度的低估可能会严重影响排放估计和气候变化研究。
Advanced Very High Resolution Radiometer (AVHRR) data are used to produce an active-fire detection product for the fire season in 1999 and 2000 and an area burned product for 1996–2000. The distribution of fire is presented ranging from the Urals in the west to the eastern coast and from the semi-dry steppe regions in the south through the taiga in the north. A temporal and spatial pattern of fire is observed migrating from north of 40° N latitude in April to north of 60° N by mid-July. Fire is widespread in August, spanning the entire geographic range. In contrast to these patterns, no similar east–west migrations are discernible from these data. Peak active-fire counts are detected in early May between 50 and 55° N latitude in both 1999 and 2000. Wildfire in Russia is highly variable, both annually and interannually, with differences in reported area burned ranging from 0.234 to 13.3 million hectares per year. Comparing Russian fire statistics to satellite-based data from this investigation and previous works, we find area burned in Russia may be commonly underestimated by an average of 213%. Underestimates of this magnitude could strongly affect emissions estimates and climate change research.