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首页> 外文期刊>Journal of the air & waste management association >Monitoring Agricultural Burning in the Mississippi River Valley Region from the Moderate Resolution Imaging Spectroradiometer (MODIS)
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Monitoring Agricultural Burning in the Mississippi River Valley Region from the Moderate Resolution Imaging Spectroradiometer (MODIS)

机译：通过中分辨率成像光谱仪（MODIS）监测密西西比河流域地区的农业燃烧

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摘要

The 2003 active fire observations from the Moderate Resolution ImagingrnSpectroradiometer (MODIS), on board NASA's Terra and Aqua satellites, were analyzed to assess burning activity in the cropland areas of the Mississippi River Valley region. Agricultural burning was found to be . an important contributor to fire activity in this region, accounting for approximately one-third of all burning. Agricultural fire activity showed two seasonal peaks: the first, smaller peak, occurring in June during the spring harvesting of wheat; and the second, bigger peak, in October during the fall harvesting of rice and soy. The seasonal signal in agricultural burning was predominantly evident in the early afternoon MODIS Aqua fire detections. A strong diurnal agricultural fire signal was prevalent during the fall harvesting months, as suggested by the substantially higher number (～3.5 times) of fires detected by MODIS Aqua in the early afternoon, compared with those detected by MODIS Terra in the morning. No diurnal variations in agricultural fire activity were apparent during the springtime wheat-harvesting season. The seasonal and diurnal patterns in agricultural fire activity detected by MODIS are supported by known crop management practices in this region. MODIS data provide an important means to characterize and monitor agricultural fire dynamics and management practices.
机译：分析了2003年美国宇航局Terra和Aqua卫星上的中分辨率成像分光辐射计（MODIS）进行的主动火观测，以评估密西西比河谷地区农田地区的燃烧活动。发现是农业燃烧。造成该地区火灾的重要原因，约占全部燃烧的三分之一。农业火灾活动表现出两个季节性高峰：第一个是较小的高峰，发生在春季春季收获的六月。第二个更大的高峰是在十月份，即大米和大豆的秋季收获期。在午后MODIS Aqua火灾探测中，农业燃烧的季节性信号尤为明显。在秋季收获的月份，强烈的昼夜农业火灾信号普遍存在，这是由MODIS Aqua在清晨探测到的火灾数量明显多于早晨MODIS Terra探测到的火灾数量（〜3.5倍）所表明的。在春季小麦收获季节，农业火活动没有明显的昼夜变化。 MODIS检测到的农业火灾活动的季节性和昼夜规律得到该地区已知作物管理实践的支持。 MODIS数据提供了表征和监测农业火灾动态和管理实践的重要手段。

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