For snow related study, what band to be used and satellite image.
If any body work is related to snow kindly suggest which band and satellite image is best.
Hi Jgalingam
For snow cover studying, I would suggest you to use Modis, Landsat and ASTER satelite imagery. You can use next websites: http://earthexplorer.usgs.gov/ and http://reverb.echo.nasa.gov/reverb/
Yous can register on this websites (it's free) and download aerial images, for Landsat L5 images you can use 5_4_3 band, for Landsat L8 7_5_3 and for ASTER images 3N_2 band (in ArcGIS software)
I agree with Mr. Levan Tielidze. These are the till now updated source.
If there any available model to study the snow in Remote sensing software.
Any software or model is available particular for studying the snow.
Need some important technical article related to snow study.
Hi!
It depends your needs. Spatial (and temporal) resolutions of Landsat and MODIS are very different.
For fine scale study I suggest you to consider Landsat and for extensive studies MODIS snow cover product which has daily temporal resolution and is easy to handle. With Landsat you need to handle huge data masses and sparse temporal resolution. But Landsat images are available from the mid 80's (MODIS from the beginnig of the 2001).
Both images are though freely available. Links were posted by mr Tielidze.
Normalized Difference Snow Index (NDSI) is widely used in snow related RS studies. I suggest to get familiar with it.
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=399618&tag=1
Fmask is automated cloud/cloud shadow/snow mapping algorithm for Landsat (and sentinel), but I don't think it's the best one when snow is the priority. At least according to my experience many snow pixels are classified as clouds. Fmask is also available as an USGS product.
https://code.google.com/p/fmask/
http://espa.cr.usgs.gov/
Good luck!
Hello,
This is one study "Southwestern Snow Cover Mapping Products" done many years ago using MODIS products:
http://newims.hwr.arizona.edu/SAHRA/GeoDB/SnowCover/index.html
You can find there the method description and data for download.
Hi Jgalingam
I think it depend on
1- your period of study
2- your scale and your pixel size of study.
3- your location and Area.
4- your hardware.
I worked with Noaa for a melting snow project .
because my period of study started from 1978 and there was no MODIS or Landsat
finally ,I suggest you to use Modis, Landsat and ASTER(sorted by pixel size) satellite imagery.
regards
Siamak
Check out this new product highlighted at AGU 2015: http://landsat.gsfc.nasa.gov/?p=11702
depends on your topics.
as far as i know, an active sensor such as RADARSAT2, TerraSAR-x, cosmo skymed, or sentinel 1 was good to determine snow and ice.
you are able to access sentinel 1 data on https://scihub.copernicus.eu/
Go to https://nsidc.org/daac to find a number of snow and ice data products. NSIDC (National Snow and Ice Data Center) has one of 12 Distributed Active Archive Centers (DAACs) that are a part of NASA's Earth Observing System Data and Information System (EOSDIS). The NSIDC site provides information about a large number of snow and ice products derived from satellite and airborne instrument data. You can look at the FAQs and contact the NSIDC user services staff if you have questions about their data holdings.
I agree with the comment of Pekka Niittynen on the Fmask. I tried it with Landsat and it worked pretty well.
Here are the steps on how I used and applied Fmask.
http://eric-salas.com/2015/09/23/how-to-remove-clouds-using-fmask-from-landsat-images/#more-141
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