January 14, 2019
by chris
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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
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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
September 19, 2018
by chris
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This year’s northern hemisphere summer – while bringing a lot of dry and sunny weather in Europe – was a fairly moderate summer in the Arctic with relatively limited good satellite image recording possibilities in particular at very high latitudes. … Continue reading
July 9, 2018
by chris
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Continuing on the late evening Landsat images recorded this year in larger number by the USGS here a few more if these featuring various areas in northern Europe and Asia from late June and early July: In the northern Ural … Continue reading
June 29, 2018
by chris
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It is midsummer here and i have for the occasion two satellite image mosaics made from Sentinel-2 data. The first one is from the north showing spring thawing in northeastern Russia at the Arctic Ocean coast. Contrast between the southern … Continue reading
June 8, 2018
by chris
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In the previous post i showed an example for the extended high latitude ascending orbit coverage recorded this year by Landsat 8. Here another example of the Island of Jan Mayen with the unusual late evening sun position and a … Continue reading
June 5, 2018
by chris
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Quite a few things have happened in the world of open data satellite images since i last reported on satellite image news. The most significant change is that Sentinel-2 is now recording significantly more images in most parts of the … Continue reading
May 8, 2018
by chris
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Kind of balancing the recently shown imagery of the northern polar region i here introduce a number of new satellite image mosaics from the south of all the Subantarctic Islands. These islands – similar to some parts of the Arctic … Continue reading
April 25, 2018
by chris
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Continuing from the previous post here as promised more examples for application of pixel statistics methods to Landsat and Sentinel-2 data and how this can help to produce more accurate colors. I have mentioned before that based on the spectral … Continue reading
April 21, 2018
by chris
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As regular readers of this blog know i have produced quite a few satellite image mosaic products over the past years and reviewed the work of others in that field as well. New products of this type have been introduced … Continue reading
April 20, 2018
by chris
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Today ten years ago the USGS started opening the full Landsat image archive as open data. Although this was not the first release of satellite imagery as open data – a selection of Landsat images was already opened before and … Continue reading
February 28, 2018
by chris
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Here two Winter impressions from Northern Europe – the first is from Northern Russia showing the city of Archangelsk: You can see the frozen Northern Dvina River and the likewise mostly frozen White Sea. Well visible in the low sun … Continue reading