February 28, 2016
by chris
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On openstreetmapdata.com Jochen and me provide daily updated processed OpenStreetMap coastline data for use in maps and elsewhere. It is used for example by the standard map on openstreetmap.org to provide an up-to-date rendering of the coastline. This data is … Continue reading
February 20, 2016
by chris
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The latest version of the OpenStreetMap standard map style contains a change from me adding and improving rendering of some coastal features. First it adds support for rendering areas tagged natural=reef using a blue dot pattern: Reefs in OpenStreetMap are … Continue reading
February 18, 2016
by chris
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Here a number of further impressions from the northern hemisphere winter based on Sentinel-2 data from the last few weeks: Since probably not everyone is familiar with all of these places here a map showing all the locations:
February 16, 2016
by chris
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ESA today launched another Sentinel satellite. In the PR materials and accordingly also in various media reports Sentinel-3A is generally described as being targeted primarily at ocean observation. More useful is probably to compare it to other existing satellite systems. … Continue reading
February 15, 2016
by chris
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Ongoing volcanic eruptions are often well visible on satellite images due to the clouds of ash and steam emitted by the eruption. In Kamchatka during winter you can also usually well identify recently active volcanoes even after the eruption ended … Continue reading
February 10, 2016
by chris
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In connection to my recent review of the Sentinel-2 data i want to point to a survey the EU commission is doing for current and potential future data users. This kind of survey is of course prone to misinterpretations and … Continue reading
February 10, 2016
by chris
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Once more it is time for a number of new images in the OSM images for mapping: First the two Landsat off-nadir images i showed in the previous post are available – other image sources provide nothing of use in … Continue reading
February 8, 2016
by chris
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During the last days the USGS recorded some sequences of off-nadir Landsat images in the Antarctic. I wrote about the off-nadir capability of Landsat 8 previously, regularly Landsat can only record images up to about 82.66 degrees latitude. By tilting … Continue reading
February 5, 2016
by chris
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Clouds belong to optical satellite images like manure belongs to horses – they are inevitably connected but still we generally prefer the latter without the former and put a lot of effort into separating the two things. So even if … Continue reading
February 4, 2016
by chris
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Another regional Landsat mosaic is now available for licensing on services.imagico.de. It features large parts of northern Europe with the Scandinavian peninsula, the Baltic Sea and surrounding areas. It is similar to the previously introduced images of Greenland and Svalbard … Continue reading