May 18, 2020
by chris
0 comments
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
0 comments
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
0 comments
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
0 comments
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
0 comments
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
0 comments
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
0 comments
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
July 1, 2019
by chris
0 comments
Some satellite image impressions from mid 2019 – all based on Sentinel-2 data. Cloud vortices around Heard Island near mid winter: Last sea and lake ice thawing near the coast in northern Canada: Another southern hemisphere winter impression from Kerguelen: … Continue reading
March 6, 2019
by chris
0 comments
Last year i mentioned that the USGS had recently extended recording of nighttime images with Landsat at high latitudes in summer and also showed some examples from the northern summer for this. For the southern summer we also get more … Continue reading
March 3, 2019
by chris
0 comments
I have not shown a lot of satellite images recently – for those who start missing them here a few winter impressions from the northern hemisphere from January and February this year. The first one is an early morning image … Continue reading
January 14, 2019
by chris
0 comments
It took me somewhat longer this time but i have prepared my traditional yearly report on open data satellite image acquisition numbers – for Sentinel2 and Landsat – for the October 2017 to October 2018 time frame. See last year’s … Continue reading
October 18, 2018
by chris
0 comments
Back in July 2017 when the first Sentinel-3 Level-2 data was released i did not write a detailed report like i did for the Level-1 data because i wanted to wait for the rest of the products – which are … Continue reading