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    How can I access historical data?

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    • 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?

        1 Reply Last reply Reply Quote 0
        • 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...

            Greetings from Tomber

            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...

                        Jim

                        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
                            • R
                              RK7 @Gkikas LGPZ last edited by

                              @gkikas-lgpz
                              thank you ,
                              I would like to have historical wind patterns say Jan ,Feb so on to December so as to understand how it blows from where and how strong .

                              Brgds
                              RK7

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

                                @rk7
                                See "Indian Ocean Pilot Charts" (Pub. #109)
                                http://www.offshoreblue.com/navigation/pilot-charts.php

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

                                  @gkikas-lgpz

                                  thank you

                                  1 Reply Last reply Reply Quote 1
                                  • R
                                    RootInc. last edited by

                                    Hi, Ivo.

                                    As a farmer, I definitely need the historical data.

                                    Keisuke (CEO, Root Inc., Japan)

                                    1 Reply Last reply Reply Quote 1
                                    • A
                                      ANTIGUA last edited by

                                      Please. It would be great for ocean rowing.

                                      1 Reply Last reply Reply Quote 0
                                      • S
                                        steffan.watkins last edited by

                                        I understand the issue with funding, and space, but was none the less wondering if South Atlantic wave and wind data from August 30th was still cached or otherwise still in the database, or if it has already been purged. Thank you for making an amazing weather service! :)

                                        idefix37 1 Reply Last reply Reply Quote 1
                                        • idefix37
                                          idefix37 Sailor Moderator @steffan.watkins last edited by

                                          @steffan-watkins
                                          You can find historical data on south Atlantic here:
                                          https://weather.us/model-charts/euro/europe-africa/wind-mean-direction/20180907-1500z.html

                                          1 Reply Last reply Reply Quote 1
                                          • Ganbat Gabi
                                            Ganbat Gabi last edited by

                                            It is much important that historical data.
                                            Windy should show 5 days past weather process in the web, that is really useful thing.

                                            Ganbat

                                            1 Reply Last reply Reply Quote 0
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