Introduction and download of MODIS data (ii)--modis data download method (FTP) __ftp

Source: Internet
Author: User

We have already introduced the MODIS data introduction, the parameter and the related typical application. In this article, we will introduce the way to download MODIS data. Of course, this is mainly to introduce the way of downloading foreign websites, domestic sites are generally in the geospatial data cloud and Remote sensing market download. The foreign website (NASA official website) downloads the way mainly introduces two kinds. This article mainly aims at the first way, based on the complete one scene image downloading process (FTP tool). The next update is the way the client downloads (MATLAB and R) based on the MODIS Web service.
FTP download tool and full image download method
The author is also the first to refer to a blog on the Internet to learn the way to download, the old rules, the end of the text link, here to thank the students to write a blog. At the same time, NASA's official website recently revised the site, the new version of the site's download method for the moment did not see other people finishing, so slightly to do some sorting.
NASA official Remote Sensing image data download URL (there are more than Modis, and envisat,npp-viirs, etc.):

https://ladsweb.modaps.eosdis.nasa.gov/


Select the Search&order for data discovery:

Enter this page:

Find the satellite sensor you want to download (here is an example of Terra Star):

Select the products we need (here are 1 km, m of two products, as well as latitude corrected products, specific product introduction to a blog form and listed links):

Click Directly after end

"Time" to select the span of data as needed.

Then click Next, "LOCATION".
There are different ways to choose a range of images.

country→ Select data by country's administrative boundaries
tiles→ Select data by tile selection, or by the global row-by-column grid of MODIS data (also called the number of MODIS observations)
Validation sites→ by globally distributed validated observation sites or eco-network observation sites (can be combined with observational site data for research)
Draw Custom Box (Classic) → Select the selected data according to the user's custom drawing box (the classmate who has used the old version of the website to download will be familiar with this function)
Enter coordinates→ use latitude and longitude coordinates to select the data (this is similar to the old version of the site's download function), in fact, is the research area of four to coordinate.
Click on the arrow to select the tile. Next, "FILES". This step will list all of the data that meets the requirements, but because the previous search is too long and the web end is not fully visible, we are revising the relevant requirement data (select only 2010 years of data and choose to download the synthesized product).

Next is a new version of the site a relatively different place, where the "FILES", you can download data directly. The old version of the site generally need order, submit orders before downloading. This is more liberal than it used to be.

Now select all the data and submit the order.

But the new website now requires a registration account. So before downloading the data, remember to apply for a EarthData account (this is the more troublesome point, at present the author tested 163 and QQ mailbox, there is no way to receive activation mail. At present only the Google mailbox can activate, so must go to register a Gmail mailbox.
Note that you need to start the "Laads Web" under "My Application" in your account before you can submit your order.



FTP downloads must wait for the order to appear availlable to download. The official waiting time is 5min to 10 days. It's usually OK soon.
FTP download way, need to use FLASHFXP such software to download, there is a need for this software can be in the comments area to leave a mailbox.


The address is determined according to your order.
Ftp:ladsweb.modaps.eosdis.nasa.gov
Username:anoymous
Password: e-mail for your account (Gmail)
Anoymous means anonymous transmission in FTP. You can then simply drag and drop the above data to the local folder.

This is the content of the MODIS data download method (FTP).
Finally attached to the old version of the website Download Tutorial Blog URL:

Http://blog.sina.com.cn/s/blog_8684880b010149ue.html

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