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A simple global climate zoning method

A climate and global technology, applied in the direction of complex mathematical operations, etc., can solve problems such as inability to use the global land, inconvenient use, and zoning uncertainty, and achieve the effects of flexible zoning, reduced participation, and simplified calculations

Inactive Publication Date: 2018-12-18
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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Problems solved by technology

Due to the influence of different factors, such methods are affected by topography, underlying surface types, and insufficient observation values, which will cause great uncertainty in the division of some regions. They are only applicable to one type of climatic zone and cannot be used on global land.
Most of the current climate divisions are based on the classic Köppen climate division method, that is, two atmospheric variables of surface temperature and precipitation are used for division. The actual variables used include the mean value, probability distribution and extreme value of temperature and precipitation. The method of climate zoning, due to the sparseness of observation data in practical applications, cannot carry out observations globally, and has limitations. The two variables of temperature and precipitation are not convenient to use in actual climate zoning

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Embodiment Construction

[0013] 1. The calculation formula of Bowen ratio has been revised

[0014] a. Calculation formula of Bowen ratio

[0015] Based on the fact that Bowen ratio (1) has a good ability to distinguish dry and wet underlying surfaces, the calculation formula of Bowen ratio is:

[0016] ….. (1)

[0017] In formula (1), Hs is sensible heat flux (upward is positive, downward is negative), E is latent heat flux (upward is positive, downward is negative), l is latent heat gasification coefficient.

[0018] b. In the formula (1), the sensible heat flux propagates upward in high-temperature areas such as the dry heat of the underlying surface of the desert, and has a larger area (the direction is upward, pointing to space) and has a positive value, while it has a positive value in cold areas such as Greenland If the value is smaller (the direction is pointing to the surface), the value is negative; the dry and wet state of the surface is characterized by latent heat flux; when there is ...

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Abstract

The invention relates to a simple global climate zoning method, which modifies the Bowen ratio calculation formula and defines different climate zones in the world into five climatic zones through thesurface flux factor (SFF): extreme cold zones (EC) (corresponding to Bowen ratio-infinity to 0, extramely cold region), extreme wet zone (EW) (0-0.5; extremely wet region), semi-wet (SW) (0.5-2.0; semi-wet region), semi-dry belt (SA) (2.0-10; semi-arid region), and extremely arid (EA) (10 to +infinity. Compared with the traditional K-ppen climate zoning, the invention more accurately reflects thezoning of different underlying surfaces in different seasons, and at the same time can conveniently calculate the succession process between different climatic zones, thereby facilitating the globalclimate change research.

Description

technical field [0001] The invention relates to a climate system partitioning method applicable to the whole world. The method utilizes a single factor representing surface flux, that is, the ratio of sensible heat flux to latent heat flux, to realize fast partitioning of different climate zones in the world. Background technique [0002] Climate division is based on certain indicators to divide places with roughly the same climate into one area. In climatology analysis, a simpler method is adopted, generally only considering multiple variables (precipitation, temperature, evaporation ratio and vegetation coverage, etc.) for zoning. Due to the influence of different factors, topography, underlying surface type, and insufficient observation values, this kind of method will cause great uncertainty in the division of some regions. It is only applicable to one type of climatic zone and cannot be used on the global land. Most of the current climate divisions are based on the cla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 陈昊韩博孟宪红吕世华奥银焕
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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