Remote sensing estimation method and device and readable storage medium for thickness of permafrost active layer

Abstract

The invention provides a remote sensing estimation method and device and a readable storage medium for the thickness of a permafrost active layer. The method comprises the following steps: obtaining remote sensing data and auxiliary data of an estimated area; estimating the thickness of the permafrost active layer in the estimated area according to a preset formula for calculating the thickness ofthe permafrost active layer, remote sensing data and auxiliary data, wherein the formula for calculating the thickness of the permafrost active layer is shown in the description. The embodiment of the present invention is base on a preset formula for calculating the thickness of the active lay of permafrost and related data, such as land surface temperature melting index, leaf area index, snow days and soil properties, and obtains measurement data of the thickness of permafrost active layer, and estimates the thickness of permafrost active layer by estimating parameters in the calculation formula. The thickness of permafrost active layer can be monitored continuously in time and space by using the data obtained from remote sensing observation.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a remote sensing estimation method, device and readable storage medium for the thickness of the permafrost active layer. Background technique [0002] At present, the observation of the thickness of the active layer of permafrost mainly relies on ground measurements. The main measurement methods are freeze-thaw tubes or borehole observations, which have poor spatial representation, time-consuming, labor-intensive, high cost and low timeliness, and it is difficult to obtain a large-scale space. Continuously distributed active layer thickness information. The spatial estimation of the thickness of the active layer is mostly based on Stephen's formula and Kudryavtsev's empirical formula. These empirical models rely on observations of air temperature or soil surface temperature from weather stations. Since weather stations in permafrost regions are extremely rare, this Severe...

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Problems solved by technology

[0002] At present, the observation of the thickness of the active layer of permafrost mainly relies on ground measurements. The main measurement methods are freeze-thaw tubes or borehole observations, which have poor spatial representation, time-consuming, labor-intensive, high cost and low timeliness, and it is difficult to obtain a large-scale space. Continuously distributed active layer thickness information

The spatial estimation of the thickness of the active layer is mostly based on Stephen's formula and Kudryavtsev's empirical formula. These empirical models rely on observations of air temperature or soil surface temperature from weather stations. Since weather stations in permafrost regions are extremely rare, this Severely limited monitoring of permafrost active layer thickness

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