I have explored Earthexplorer to download Landsat 7 surface reflectance (SR) products, where i get the option of Spectral indices (EVI, i chose), the downloaded data (rar file) has band-wise data and others, but NO direct EVI product... (Although it can be calculated from bands in ENVI)
Can anyone make me clear but that how they distribute that SR data.?
Hi Atiqa. I am not sure how exactly you downloaded the product. Have you checked the product guide for the Landsat SR-derived spectral indices? Details of the product are specified in the guide.
By the way, which area do you wanna download so maybe I can do the checking for you?
http://landsat.usgs.gov/documents/si_product_guide.pdf
dear atiqa
Landsat Level 1 products is a band-wise data you have to utilize these bands as your objective. i think you looking for enhanced vegetation index (EVI). you have to use ENVI software to develop EVI data (EVI equations).
Dear Atiqa,
Ready to download EVI data is available from MODIS at 250m resolution (500m and 1km resolution data is also available). EVI is included in the MOD13Q1 product and can be downloaded from http://earthexplorer.usgs.gov/.
In the Data Set window select NASA LPDAAC Collections --> MODIS Vegetation Indices --> MODIS MOD13Q1.
More information about MOD13Q1 can be found at: https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/mod13q1
Additionally UN-SPIDER's Knowledge Portal includes a form that can help you find information and download sources for many satellite data. This form can be reached at: http://www.un-spider.org/links-and-resources/data-sources
Hope this will help you!
Regards,
Karolina
Yeah... Thankew for all of the help.
Glovis and Earthexplorer offer the Landsat series SR products with EVI and other indices.
Atiqa
For direct download of Landsat level 1 EVI product already derived for you and other products you can use ESPA Bulk order. The link is provided here: http://espa.cr.usgs.gov/ordering/new, But before downloading or odering data you have to provide the scenes you are interested in in a text file, so you can use earth explorer or glovis to identify the scenes you are interested in.
I hope this helps
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