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This, and why 1992-2020? How many of these large lakes are distributed in say, Midwest America/Canada. What were the precipitation levels in that region just a
by paiute 3y ago
This, and why 1992-2020? How many of these large lakes are distributed in say, Midwest America/Canada. What were the precipitation levels in that region just a few years prior? Why did they need to involve climate models when we have observable data?
- sjsdaiuasgdia 3y agoGiven the significant use of satellite data, I imagine the start point was chosen based on when some classes of data became available from recently launched satellites. An earlier time may not have sufficiently comparable data. There's a map linked in the paper if you want to see where the lakes are: https://www.science.org/cms/10.1126/science.abo2812/asset/abd57b01-78de-495f-8de1-6b3e378a2512/assets/images/large/science.abo2812-f1.jpg https://www.science.org/cms/10.1126/science.abo2812/asset/ab...
- bjornlouser 3y agoThey used a technique for water segmentation described in an earlier paper [1]. The validation dataset for that method goes back to 1992... "All applied images have 30-m spatial resolution and were acquired during October 1, 1992 to October 31, 2018. The period was set with regard to the availability of the validation dataset" [1] Yao, J. Wang, C. Wang, J.-F. Crétaux, Constructing long-term high-frequency time series of global lake and reservoir areas using Landsat imagery. Remote Sens. Environ.232, 111210 (2019).