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    How can I access historical data?

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    • Gkikas LGPZ
      Gkikas LGPZ Moderator @Flips last edited by

      @flips
      what about


      or

      where you can see radioactive cloud driven by prevailing winds.

      Gkikas LGPZ 1 Reply Last reply Reply Quote 1
      • Gkikas LGPZ
        Gkikas LGPZ Moderator @Gkikas LGPZ last edited by

        ... official data
        http://www.irsn.fr/EN/publications/thematic-safety/chernobyl/Pages/The-Chernobyl-Plume.aspx

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        • F
          Flips @Gkikas LGPZ last edited by

          @meteo-gr
          Thank for the help. But do you know a website where I can see a wind animation of the Chernobyl disaster?
          The ones you've sent is the radioactivity that has spread all over Europe, but I would also like to get a map over the wind, such as Windy.com's design

          Gkikas LGPZ 1 Reply Last reply Reply Quote 0
          • Gkikas LGPZ
            Gkikas LGPZ Moderator @Flips last edited by

            @flips
            Here you can find some archived data.
            http://www.wetterzentrale.de/reanalysis.php?map=1&model=noaa&var=3&jaar=1986&maand=04&dag=25&uur=1200&h=0&tr=360&nmaps=24#mapref

            Note: I sent you the "radioactivity animation" as it takes into account many wind fields (for many days and in many levels).

            1 Reply Last reply Reply Quote 1
            • R
              Renaissance丶 last edited by

              What a pity!I would like to have accessed some historical data for my PowerPoint about meteorology. Well, I will still support Windy.

              1 Reply Last reply Reply Quote 0
              • J
                jakob888 last edited by

                @ivo
                I need a data for the last year for my location, I need data for wind speed for every hour. where can I found it?
                my location is Hengelo, Overijssel, Netherland.
                Or can you send it to me?
                this is my email jakob19888@gmail.com

                Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                • Gkikas LGPZ
                  Gkikas LGPZ Moderator @jakob888 last edited by

                  @jakob888
                  If you are interested in official data, you have to contact:
                  https://www.knmi.nl/over-het-knmi/how-to-contact-knmi

                  As I can see, nearby there is the Twenthe Airport.
                  At the airport (location indicator EHTW) there is a meteorological station
                  and (I believe) people there can provide you data needed.
                  Also you can search the internet for actual weather data for met. station
                  Twenthe Airport, EHTW in various sites
                  e.g. https://weatherspark.com/y/148062/Average-Weather-at-Twenthe-Airport-Netherlands-Year-Round

                  Also, you can download the data from Twenthe Automatic Weather Station, here
                  http://www.meteomanz.com/sy5?l=1&ind=06290&m1=01&y1=2017

                  Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                  • Gkikas LGPZ
                    Gkikas LGPZ Moderator @Gkikas LGPZ last edited by

                    ...http://www.meteomanz.com/sy1?ty=hp&l=1&cou=6090&ind=06290&d1=01&m1=03&y1=2017&h1=00Z&d2=01&m2=03&y2=2018&h2=23Z

                    1 Reply Last reply Reply Quote 0
                    • 小黄
                      小黄 Sailor @dgrubman last edited by

                      @dgrubman Hello,I want it too.I am a taercher,I want to use it for teaching
                      This is my email
                      923199984@qq.com.
                      Thank you very much

                      1 Reply Last reply Reply Quote 1
                      • E
                        epicenter last edited by

                        Could you give us an idea of how much space 1 month of data would take?

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                        • 3
                          3842022 last edited by

                          软件总是连不上网络,借贵地请教一下。

                          Tomber42 1 Reply Last reply Reply Quote 1
                          • Tomber42
                            Tomber42 Moderator @3842022 last edited by

                            @3842022 said in How can I access historical data?:

                            软件总是连不上网络,借贵地请教一下。

                            Yes...

                            1 Reply Last reply Reply Quote 2
                            • M
                              mimakaev | Premium last edited by

                              Re: storage. Access even to a very sub-sampled historical data would be useful as well!

                              If you have data at 1 degree resolution, that is roughly 360*180 points per globe. If you were to only keep 5 (7, 10) basic measurements (pressure, temperaturue, wind speed/direction, precipitation) at three different altitudes (0, 850hPa, 500hPa), it gives you: 360 * 180 * 5 * 3 * 4 (bytes per float32), which is about 4MB per measurement. Sample it every 3 hours over a year, and that would be 8GB/year. Go to 0.5 degree resolution, and that's 32GB/year. That still can fit on my laptop. And I think grib files actually use less than 4 bytes per point.

                              I was also frustrated with the lack of any ways to access historical data. So I'm actually planning to download a bunch of grib files from public GFS server, select only relevant timepoints/layers, and save them for viewing in existing grib viewers (or publish them somewhere). It is still a lot of work, probably a week of coding for me, and however many days/weeks to download the data. I may actually do this project at some point.

                              1 Reply Last reply Reply Quote 1
                              • B
                                bartbv last edited by

                                Is it possible to view data less than 24 hours ago?
                                I assumed this was possible, but there is a reset at 00:00.

                                B 1 Reply Last reply Reply Quote 1
                                • B
                                  bartbv @bartbv last edited by

                                  @bartbv I found out, this is possible by changing your computers local time.

                                  1 Reply Last reply Reply Quote 0
                                  • A
                                    ababah @ivo last edited by

                                    @ivo Historical data is very important to some researchers and users

                                    1 Reply Last reply Reply Quote 1
                                    • don long
                                      don long last edited by

                                      down with surfline hail the new king. WINDYTV.com

                                      1 Reply Last reply Reply Quote 0
                                      • drjduncan
                                        drjduncan last edited by

                                        At some point we should talk. I might be able to help. Dr. Duncan. Send me your email if you'd like to...

                                        1 Reply Last reply Reply Quote 0
                                        • R
                                          RK7 @ivo last edited by

                                          @ivo

                                          thanks understand ,
                                          I am working on finding a sustainable shipping solution by harnessing wind energy on ships and for which i need to understand the wind patterns /speed along the Indian Peninsular . If there is an paid subscription for historical view or any other arrangements possible , please do let me know .
                                          Brgds
                                          RK7

                                          Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                                          • Gkikas LGPZ
                                            Gkikas LGPZ Moderator @RK7 last edited by

                                            @rk7
                                            https://weather.us/model-charts/euro/india/wind-mean-direction/20180820-0900z.html

                                            R 1 Reply Last reply Reply Quote 0
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