---------- Forwarded message ----------
From: Julia Kumari Drapkin <iseecha...@kvnf.org>
Date: Mon, Jun 4, 2012 at 2:53 PM
Subject: Aerial/NDVI photography to Document Drought in Colorado
Cc: Todd Sheets <hutmanme...@me.com>, Liz Barry <eba...@gmail.com>, Shannon
Dear Public Laboratorians,
My name is Julia Kumari Drapkin. I'm the lead producer and reporter of
iSeeChange- a crowdsourced climate change reporting project in Western
Colorado that hosts conversations between citizens and scientists.
With the unusually early spring and a record dry March, we are trying to
document the effects of what looks like a severe drought in Colorado this
summer. This drought is unusual in that the early spring greening has
caused the plants to use up water earlier and faster on top of all the
record low precipitation this year.
We'd love to reach out to the Public Laboratory community for suggestions
to do NDVI/infrared photography using balloons and kites.
-What location make sense to map/document? Areas that are irrigated
-What kind of flight frequency would this require to pull off.
June is the driest month here and things are approaching or are probably at
maximum green, so we'd love any and all suggestions on how to make the most
of the technique. Thanks so much, we appreciate the support of the Public
Laboratory community. My contact information is below.
Call us: 1-866-586-3669
Message us: Text the words "iseechange" to 877-877
Tweet us: @weseechange
Like us: www.facebook.com/iSeeChange
> If plants become stressed later in the season, a time series of NDVI > images could be a dramatic visualization of that event. Either > agricultural or wild areas could be used to illustrate the event, although > well irrigated areas might not show any effect. Interpreting the images > will probably require comparing them to similar images from more normal > years which you obviously donít have yet. But monthly or weekly images of > the same area could still raise awareness of the seasonal changes occurring > there.
> The predicted event of drought will be a regional phenomenon which could > be best visualized with broader imagery. Data from the Modis sensor on the > Terra satellite is used to produce NDVI results every day for your region.
> You can view or download 16 day averages of NDVI data (and also NWDI, which > might be more relevant to drought) for the past dozen years for any area > larger than 250 meters at http://pekko.geog.umd.edu/usda/test/. Making > graphs or maps of these data available to your community could stimulate a > conversation about the phenomenon. For example, the NDVI data for this > spring in your region (I think that's where you are) has been a little > below average, but not that much: http://bit.ly/KBektH. The NWDI has > been more solidly below average: http://bit.ly/KBe6mm. You can play > with that site and learn a lot about the recent history and geographic > patterns of drought and plant growth in your area. Screenshots from the > above links are below.