从EarthData网站上下载MERRA2再分析数据

在 Authorized Apps 里给 GES DISC授权，用于下一步的数据下载

在下面的数框中搜索“MERRA2”

以montly MERRA2 (M2TMNXLND_5.12.4) 的蒸散发数据为例，该数据界面如下

根据自己的需要，自定义下载的变量名和范围，界面为

下载分为两步：

1. 在家目录（~）下创建.urs_COOKIEs配置文件，用于存放网站的COOKIE

cd ~
touch .urs_COOKIEs


2. 将数据的下载链接列表 download_links_list.txt 文件放在家目录下面
3. 用wget命令下载

wget --load-COOKIEs ~/.urs_COOKIEs --save-COOKIEs ~/.urs_COOKIEs --auth-no-challenge=on --keep-session-COOKIEs --user=username--ask-password --content-disposition -i download_links_list.txt


上面命令中，username改为自己的用户名即可。键入命令后，会提示输入密码，输入密码即可下载啦！

下载过程如下：

--2021-08-13 17:50:09-- https://goldsmr4.gesdisc.eosdis.nasa.gov/data/MERRA2_MON THLY/M2TMNXLND.5.12.4/doc/MERRA2.README.pdf
Resolving goldsmr4.gesdisc.eosdis.nasa.gov (goldsmr4.gesdisc.eosdis.nasa.gov)... 2001:4d0:241a:4041::95, 198.118.197.95
Connecting to goldsmr4.gesdisc.eosdis.nasa.gov (goldsmr4.gesdisc.eosdis.nasa.gov) |2001:4d0:241a:4041::95|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1064850 (1.0M) [application/pdf]
Saving to: ‘MERRA2.README.pdf’
MERRA2.README.pdf 100%[===================>] 1.01M 217KB/s in 4.8s
2021-08-13 17:50:15 (217 KB/s) - ‘MERRA2.README.pdf’ saved [1064850/1064850]
--2021-08-13 17:50:15-- https://goldsmr4.gesdisc.eosdis.nasa.gov/daac-bin/OTF/HT TP_services.cgi?FILENAME=%2Fdata%2FMERRA2_MONTHLY%2FM2TMNXLND.5.12.4%2F2020%2FMER RA2_400.tavgM_2d_lnd_Nx.202001.nc4&FORMAT=bmM0Lw&BBOX=-90%2C-180%2C90%2C180&LABEL =MERRA2_400.tavgM_2d_lnd_Nx.202001.SUB.nc&FLAGS=remapbil%2CMERRA1.25&SHORTNAME=M2 TMNXLND&SERVICE=L34RS_MERRA2&VERSION=1.02&DATASET_VERSION=5.12.4&VARIABLES=EVLAND %2CEVPINTR%2CEVPSOIL%2CEVPTRNS
Connecting to goldsmr4.gesdisc.eosdis.nasa.gov (goldsmr4.gesdisc.eosdis.nasa.gov) |2001:4d0:241a:4041::95|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 194658 (190K) [application/octet-stream]
Saving to: ‘MERRA2_400.tavgM_2d_lnd_Nx.202001.SUB.nc’
MERRA2_400.tavgM_2d_ 100%[===================>] 190.10K 152KB/s in 1.3s
2021-08-13 17:50:19 (152 KB/s) - ‘MERRA2_400.tavgM_2d_lnd_Nx.202001.SUB.nc’ saved [194658/194658]
--2021-08-13 17:50:19-- https://goldsmr4.gesdisc.eosdis.nasa.gov/daac-bin/OTF/HT TP_services.cgi?FILENAME=%2Fdata%2FMERRA2_MONTHLY%2FM2TMNXLND.5.12.4%2F2020%2FMER RA2_400.tavgM_2d_lnd_Nx.202002.nc4&FORMAT=bmM0Lw&BBOX=-90%2C-180%2C90%2C180&LABEL =MERRA2_400.tavgM_2d_lnd_Nx.202002.SUB.nc&FLAGS=remapbil%2CMERRA1.25&SHORTNAME=M2 TMNXLND&SERVICE=L34RS_MERRA2&VERSION=1.02&DATASET_VERSION=5.12.4&VARIABLES=EVLAND %2CEVPINTR%2CEVPSOIL%2CEVPTRNS
Connecting to goldsmr4.gesdisc.eosdis.nasa.gov (goldsmr4.gesdisc.eosdis.nasa.gov) |2001:4d0:241a:4041::95|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 192473 (188K) [application/octet-stream]
Saving to: ‘MERRA2_400.tavgM_2d_lnd_Nx.202002.SUB.nc’
MERRA2_400.tavgM_2d_ 100%[===================>] 187.96K 149KB/s in 1.3s
2021-08-13 17:50:22 (149 KB/s) - ‘MERRA2_400.tavgM_2d_lnd_Nx.202002.SUB.nc’ saved [192473/192473]


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