July 28, 2017
by chris
0 comments
One of the pitfalls when OpenStreetMap contributors map remotely based on aerial or satellite images without recent on-the-ground knowledge is that it sometimes leads to “improving” seemingly inaccurate data based on outdated information. The most iconic examples for this are … Continue reading
July 23, 2017
by chris
4 Comments
As many of you have probably already read elsewhere there has been a large iceberg calving event in the Antarctic recently at the Larsen C ice shelf at the east side of the Antarctic peninsula. The interesting thing about this … Continue reading
July 7, 2017
by chris
0 comments
Since a few days ago the first data from Sentinel-2B is publicly available. Data access is offered through a separate instance of the download infrastructure so you will have to adjust any download scripts or tools you might have. It … Continue reading
July 4, 2017
by chris
0 comments
As usual when we have midsummer here on the northern hemisphere there is winter in the south so here are two winter impressions from Landsat images from the southern hemisphere from the last weeks. The first is a view of … Continue reading
June 30, 2017
by chris
0 comments
There is another survey for open data satellite image users, this time from the Copernicus program: http://www.copernicus.eu/COAHub-user-survey In contrast to the Landsat survey i featured recently – which by the way you can still participate in – this one is … Continue reading
June 26, 2017
by chris
0 comments
First here an introductory note on my policy for reviewing geodata products – since i occasionally receive questions along the lines of why don’t you review product X by company Y. I review things i find interesting and useful or … Continue reading
June 4, 2017
by chris
0 comments
Here a few more news from the field of open data satellite images: in reference to my recent report and the missing recordings of Sentinel-2 imagery – ESA seems to have “found” some images and the formulation they use in … Continue reading
June 3, 2017
by chris
0 comments
A few more satellite images from spring in the Arctic – this time featuring the northmost settlements on Earth. The northmost permanent settlement on the planet is and has been for a long time the weather station and military base … Continue reading
May 16, 2017
by chris
0 comments
It has been some time since i wrote about news in the world of open data satellite images and quite a few things have happened since then some of which i want to comment here. Sentinel-2 Recently ESA published a … Continue reading
April 22, 2017
by chris
0 comments
After the recent work on autumn color satellite image mosaics here for comparison also an image of autumn colors on the southern hemisphere. This shows the Andes Mountains in Patagonia, South America at the border between Chile and Argentina with … Continue reading
April 18, 2017
by chris
0 comments
I just uploaded another update for the OSM images for mapping containing the following new imagery: First there is a new low tide image of the North Sea Coast of Germany, Denmark and the Netherlands from September last year suited … Continue reading
April 10, 2017
by chris
0 comments
To illustrate the difficulties of assembling cloud free satellite image mosaics i tend to use the analogy of trying to photograph an elephant running through a dense forest at a distance and changing its color like a chameleon while doing … Continue reading