Biomass open combustion emission dynamic characterization method based on multiple satellite fire points

Abstract

The invention discloses a biomass open combustion emission dynamic characterization method based on multiple satellite fire points, and the method comprises the following steps: obtaining open combustion data through a data obtaining module, i.e., obtaining historical emission data, and recognizing the long-time sequence biomass open combustion emission characteristics and key impact factors; establishing an activity level based on multi-satellite monitoring fusion fire points according to the open combustion emission characteristics and the key influence factors; obtaining an emission coefficient corresponding to open combustion based on a statistical relationship between historical emissions and activity levels so as to realize dynamic characterization of biomass open combustion emissions; through fusion of multi-satellite monitoring fire point data, spatial resolution and frequency limitation of MODIS fire point monitoring are made up, the fire point capture rate is increased, the fire point capture rate serves as the activity level of biomass open combustion emission dynamic characterization, a reliable and regional differentiation emission coefficient is provided for biomass open combustion emission dynamic characterization, and the dynamic representation of the open combustion emission of the biomass is realized.

Description

technical field [0001] The invention relates to the research field of environmental protection and air pollution prevention and control, in particular to a dynamic characterization method for biomass open combustion emission based on multi-satellite fire points. Background technique [0002] During the open combustion of biomass, a large amount of pollutant gases, particulate matter and greenhouse gases can be released, which will affect the atmospheric environment, human health and climate change. Emissions from biomass open combustion have significant evolution in time and space, and can accumulate in a large amount in a short period of time. Taking the harvest season of crops as an example, the VOCs emitted by the open combustion of biomass are twice that of other air pollution sources. 2.5 The contribution ratio of VOCs is as high as 37%, and the ozone generation potential of VOCs is also increased by about 2 times. Therefore, with the extensive attention and continuou...

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Problems solved by technology

At the same time, biomass open combustion emissions have significant diurnal variation characteristics in time, and the existing 1-day time resolution inventory products cannot fully reflect the diurnal variation characteristics of biomass open combustion emissions

In the current domestic research on the open combustion emission inventory of biomass, although the uncertainty caused by the omission of the above-mentioned fire point monitoring has been reduced based on statistical data, survey data and satellite fire point monitoring information, due to the lag of statistics and survey data, the existing The biomass open combustion emission inventory cannot meet its application requirements in terms of timeliness

Therefore, the existing biomass open combustion emission inventory has the problems of being unable to accurately quantify emissions in real time and insufficient representation of time and space.

[0004] The development and application of multi-source satellite monitoring fire point data products provide a reliable data source for the dynamic and precise characterization of biomass open combustion emissions, but the quasi-real-time biomass open combustion emissions that fully reflect the characteristics of my country's biomass open combustion emissions Checklist research is still blank

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