October 12, 2020
by chris
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After more than a year without changes i added a number of new images for mapping in OpenStreetMap to my collection. The reason for the gap was that i needed to make some changes to allow the setup to scale … Continue reading
August 28, 2020
by chris
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I have shown both summer and winter images of the South Sandwich Islands here before but a recent good weather window offered an opportunity for a much better winter view based on Sentinel-2 data. Sea ice extent is pretty far … Continue reading
August 20, 2020
by chris
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Last week there were a few days of exceptionally good weather in parts of the Russian arctic and this allowed me to assemble a cloud free satellite image mosaic of Severnaya Zemlya – an archipelago i have featured here on … Continue reading
June 10, 2020
by chris
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When i announced the Green Marble mosaic version 2 mosaic recently i mentioned that the land coloring is based on MODIS data while the water color is created from Sentinel-3 data. There are multiple reasons for this choice of data … Continue reading
June 1, 2020
by chris
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During the last few days there has been very sunny weather in large parts of northern Europe – here an unusually clear view from Sentinel-3 for the Scandinavian peninsula.
May 18, 2020
by chris
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Yesterday 40 years ago in 1980 was the date of the first major volcanic eruption that was recorded by earth observation satellites. There is also imagery of the eruption itself but the more interesting images are those recorded before and … Continue reading
April 18, 2020
by chris
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Like almost everyone else i have been constrained in my work and life during the past weeks due to the global pandemic we are experiencing and the measures enacted to counter its spread. I used parts of this time to … Continue reading
February 14, 2020
by chris
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Two and half a year ago i showed pictures on a large iceberg calving in the Antarctic producing a more than hundred kilometer long iceberg east of the Antarctic peninsula. The iceberg has since then slowly moved away from its … Continue reading
January 8, 2020
by chris
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Like last year i want to here provide a look at the image acquisition numbers and spatial distribution of recordings of the two main optical higher resolution satellite systems producing open data these days: Landsat and Sentinel-2. Here is the … Continue reading
October 28, 2019
by chris
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The ESA recently made an interesting announcement about extending Sentinel-2B image recordings to lower sun positions in the northern hemisphere winter. A bit of background on that: For the past years Sentinel-2 image recordings have traditionally been made only with … Continue reading
August 2, 2019
by chris
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Some time ago i introduced a new technique for producing accurate color mosaics from Landsat and Sentinel-2 data using pixel statistics methods. Here now some larger area 3d views of Europe produced using this imagery allowing for a more accurate … Continue reading
July 15, 2019
by chris
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Someone at some point in the last few weeks seemed to have managed to put the idea into the mind of journalists that there are wildfires burning in the Arctic and this being a exceptionally newsworthy story somehow. These reports … Continue reading