Extract China map from global.Nc data and calculate regional CO2 value based on acgis

Write it at the front

I am a Acgis The small white , This blog is written to record the completion process , I don't know many principles inside . If there is a more efficient way, welcome to share ~ Then I used Arcgis10.2

The whole China map article failed to pass the review , So I covered all the maps of China with stickers Let's make up for it by ourselves

Requirements describe

The data I use is 2020 year 1 Month Global CO2 Discharged .nc data , The goal is to extract the CO2 data .

Problem analysis

To realize the above operations , The whole process needs to be divided into the following steps ：

1. Import .nc Data to Arcgis
2. from .nc data （ Actually saved 31 Days of data ） Extract one of them 【 One day 】 The data of , Turn into .tif raster data ;
3. Dividing China into cities .shp As a mask , Extract the map of China from the world map ;
4. Dividing China into cities .shp As a mask , Calculate CO2 Total emissions ;
5. Export the merged grid data as Excel surface .

1、 Import .nc data

First create a blank map

ArcToolbox-> Multidimensional tools -> establish NetCDF raster layer

 

  Data import succeeded ~

2、.nc Turn into .tif

Right click the layer just imported , Select Properties . Has just said .nc The document actually contains 31 Days of data , So I have to choose the data of a certain day first . for example , What I choose is 2 Number , namely 2020.01.02.

Right click on the layer -> attribute ->NetCDF

After the selection, it's like this

Then the next step is to export to raster data .tif Format

Right click on the layer -> data -> Derived data , Save it in the location you want to save .( I saved it for test.tif file )

 

 

 3、 Extract the map of China

First, introduce Chinese municipal .shp file

Layers -> Add data , Then add , After adding it, we can see the location of the map of China .

ArcToolbox-> Spatial Analyst Tools ->  Extraction analysis (Extraction)-> Extract by mask (Extract by Mask)

 

  After extraction, add the trimmed layer , Hide the global layer , You can see the cutting

4、 Consolidate data by city

ArcToolbox->  Spatial Analyst Tools ->  Regional analysis Zonal->  Partition statistics

The statistical type can be selected , I want to make peace , Just choose sum

 

 5、 Derived data

Export the merged by market CO2 Data table

ArcToolbox-> Spatial Analyst Tools -> Display partition statistics in a table

 

  After exporting, you can see that there is an additional table in the content list

Right click to open

Arctoolbox-> Transformation tool -> Excel -> Surface rotation excel

 

 

  Be accomplished ！