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Copernicus OLCI
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diogenes1@...
Hello All, Since these files, Copernicus OLCI, are no longer available on Eumetcast I thought I would try to obtain them via the internet connection to EumetSat. After much frustration in trying to set this up I am now resorting to the group and asking for help. The Copernicus land images are superb and I am surprised that we did not raise a Hoo-ha when they were removed from Eumetcast
However that is in the past and I still need that help now! Regards Peter |
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Ernst Lobsiger
On Thu, Dec 22, 2022 at 06:11 AM, <diogenes1@...> wrote:
The Copernicus land images are superb and I am surprised that we did not raise a Hoo-ha when they were removed from EumetcastPeter, as we get all EUMETCast for free it was certainly not adequate to make a "Hoo-ha" (though I also regret this step of stopping OLCI EFR data). We still get a global coverage of OLCI ERR data on HVS-2. And we have NOAA-20 + Suomi NPP VIIRS covering EARS with 500m resolution. Regards, Ernst  |
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On 22/12/2022 14:11, diogenes1 via groups.io wrote:
Hello All, Since these files, Copernicus OLCI, are no longer available on Eumetcast I thought I would try to obtain them via the internet connection to EumetSat. After much frustration in trying to set this up I am now resorting to the group and asking for help. The Copernicus land images are superb and I am surprised that we did not raise a Hoo-ha when they were removed from EumetcastPeter, I've brought these down in the past and processed them here. The Sentinel 2 data which is 10m resolution can produce some stunning images: https://www.satsignal.eu/wxsat/Sentinel/Sentinel-2A.html What I recall getting down was a ~700 MB zip file with all channels included in JP2 format. I wrote some free software to produce the images on that page. I haven't done a download recently and I find the sources a bit of a mystery - some you need to register for, some are chargeable, some produce 10000 x 10000 pixel tiles which are rectified etc. etc. This Sentinel 2 data was never on EUMETCast, of course, and produces area resolutions about nene hundred times greater than Sentinel 3 (10m vs. 300m linear). For example: 6 MB JPEG - the image is rectified to a 100 km x 100 km tile, 100 Mpixels. Crop 4579 x 3179 pixels: https://www.satsignal.eu/wxsat/Sentinel/S2A_tile_20160420_30VVH_0-djt-processed-image.jpg I guess it may be similar for getting Sentinel 3 data. Cheers, David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv |
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diogenes1@...
Hello Ernst, We do not get Eumetcast for free, every country involved in the scheme contributes. Hence via my tax contributions I am paying for the service. I agree that we do not individually pay an additional sum directly to download files but we as European countries finance this project. Regards, Peter Securely sent with Tutanota. Get your own encrypted, ad-free mailbox: https://tutanota.com 22 Dec 2022, 15:34 by ernst.lobsiger@...:
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Ernst Lobsiger
Peter,
yes, even Switzerland takes part in and pays for EUMETSAT. All Swiss citizens pay primarily for MeteoSwiss and ask for good weather forecasts. But they certainly don't pay for you and me to get an extra EUMETCast service of global OLCI EFR images that are even freely available on the Internet. If you cannot use this service does not mean it's unusable. Ernst P.S. Sentinels are AFAIK financed by the European Union. So certainly no "Hoo-ha" from Swiss and Brexiters ;-\. |
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diogenes1@...
Hello David, thank you so much for your detailed reply to my request. I clearly remember your emails about Sentinel 2 images. I am thinking about Copernicus 3 and future satellites and the Eumetcast Ter-1/2 Tellicast facility. Please correct me if I have entirely misunderstood the function of the Ter service but I assumed that instead of receiving these files from a satellite they could be received via the WWW in a similar streaming fashion. If this is a service limited to academia I understand but these images are simply superb and for them not to be available in some form of "streaming" facility I really find incomprehensible. Regards Peter -- Securely sent with Tutanota. Get your own encrypted, ad-free mailbox: receive them https://tutanota.com 22 Dec 2022, 15:51 by david-taylor@...:
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On 23/12/2022 15:24, diogenes1 via groups.io wrote:
Hello David, thank you so much for your detailed reply to my request. I clearly remember your emails about Sentinel 2 images. I am thinking about Copernicus 3 and future satellites and the Eumetcast Ter-1/2 Tellicast facility. Please correct me if I have entirely misunderstood the function of the Ter service but I assumed that instead of receiving these files from a satellite they could be received via the WWW in a similar streaming fashion. If this is a service limited to academia I understand but these images are simply superb and for them not to be available in some form of "streaming" facility I really find incomprehensible.Yes, you're right. Not being in academia I haven't investigated Terrestrial in detail. I found this helpful overview: https://www-cdn.eumetsat.int/files/2022-03/14h15%20-%20AfricaNowcasting_New_Data%20Access_V2.pdf which includes: "End-User station is completely identical with satellite service". I guess bandwidth (cost) is the major issue, since at the moment we have about 150 Mbit/s from BAS/HVS-1 and HVS-2. Do you have that capability? Will your ISP allow continuous data at that speed? Will you actually need a direct connection to the UK's NREN network? HVS-3 will, I guess, be dedicated to MTG-I1. Can anyone remember the total download rate of it's [processed] data? That page covers some of the other ways of accessing data over the Internet. Cheers, David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv |
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Ernst Lobsiger
On Fri, Dec 23, 2022 at 08:46 AM, David J Taylor GM8ARV 🏴 🇪🇺 wrote:
"End-User station is completely identical with satellite service". I guess bandwidth (cost) is the major issue, since at the moment we have about 150 Mbit/s from BAS/HVS-1 and HVS-2. Do you have that capability? Will your ISP allow continuous data at that speed? Will you actually need a direct connection to the UK's NREN network?David and Peter, EUMETSAT TD 15 (--> TER is not for [most of] us): https://www.eumetsat.int/media/44096 "On EUMETCast Terrestrial the multicast is transferred via a multicast-enabled dedicated network, currently using research networks, to the user. Users must be eligible to connect to the national research networks and the research network must be included in the EUMETCast Terrestrial network." Google EUMETCast future (--> expected data rates): https://www.eumetsat.int/evolutions-eumetcast-services-mtg-era Regards, Ernst |
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