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Near real time satellite imagery???
- pabloson
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Ideas??
thank you
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- toddball
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There are two obvious problems with near-real-time satellite imagery:
(1) It's expensive
(a) There is a resolution/field of view tradeoff, meaning satellites can either look at small areas in detail or large areas in less detail; if you want to look at a large area in detail you need to either do multiple passes with one satellite or have multiple satellies. Orbits that are handy for looking at high latitudes are also more expensive to get into than equatorial orbits.
(b) High resolution implies large file size, and larger files are harder (more expensive) to get back to Earth
(2) Clouds
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- pabloson
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I have found a few sites where I can purchase very expensive recent imagery. Backs up what you are saying about the images being expensive to produce.
thanks again.
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- gmtnl
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Select your date range and max allowable cloud cover (I chose 100% to see all available) in the "load images" popup and pan around in the Viewer. For March, there are 3 passes of around the Eastern Cascades, but much of it is obscured by clouds.
landsatlook.usgs.gov/viewer.html
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- cmosetick
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Please note, that the name of this subset in the URL is wrong... The island it's centered on is SATURNA, not Saturn.
lance3.modaps.eosdis.nasa.gov/imagery/su...aturn_Island.2017095
This service is for tracking forest fires (over the Entire earth, not just USA) in the summertime, so please do not abuse this service. It's ultimately ran by the US govt at an IT layer as far as I'm aware, so do not hammer the server with constant downloads.
This is another good subset:
lance3.modaps.eosdis.nasa.gov/imagery/su...A1.2017095.terra.1km
Realize that these can go down to 250M resolution.
I also like this overview page:
lance3.modaps.eosdis.nasa.gov/imagery/subsets/?area=na
You can get more subsets here:
earthdata.nasa.gov/earth-observation-dat...sponse/modis-subsets
Hope this helps,
Chris
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- toddball
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worldview.earthdata.nasa.gov/?p=geograph...5,213.38462275459077
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- RonL
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Some links in the comments to dig thru. Lots of great resolution on the clouds blocking that route I want to see...
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- cmosetick
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Isn't this the same data as in EOSDIS worldview? I thought that was the original product the OP referenced. Worldview definitely uses Terra and Aqua, but is only updated once per day I think. Maybe MODIS RR is higher resolution as well?
I believe that MODIS has higher resolution, at 250M capability. Also, you can direct download specific images with MODIS. But the actual data that both reference looks to be the same.
cliffmass.blogspot.com/2017/04/new-goes-...tellite-imagery.html
I love Cliff Mass's blog and have not had a chance to read many of his posts from the last month, thanks for sharing this news!
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