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Happy Gaia user here, thanks for your work! The core topo functionality works great for me online or offline in RMNP and the surrounding area. One question if
by zmj 4y ago
Happy Gaia user here, thanks for your work! The core topo functionality works great for me online or offline in RMNP and the surrounding area.
One question if you're able to comment - what's up with the satellite snow coverage layers? I tried to use those to scout for a hike in October, but both most recent and cloudless were from 2021.
- tony_cannistra 4y agothanks, I am glad to hear it! I assume you're talking about our "fresh sat" layers -- in some places the recency of the imagery in those layers is unfortunately dependent on some rather stochastic factors. These factors are usually (but not always) correlated to location on the earth. We get the latest imagery taken from the satellites (Sentinel-2 and Landsat 8/9) nearly as soon as it's acquired, and then apply some quality filters to it which either accept the imagery for processing or reject it. It's entirely possible to get repeatedly unlucky in that regard, where for a given location no imagery that passes our quality filters has been taken for a long time. This especially happens a lot near the poles, or in very cloudy places. are you willing to share where you were looking that you experienced this issue?
- zmj 4y agoSure, it was in north central RMNP - the north slope of Fairchild Mountain and the saddle between Fairchild and Hagues Peak. I checked again and FreshSat has since been updated - 10/13 and 10/18 are the dates on the layer. Thanks for sharing the filtering process, that makes more sense how a long gap can occur.