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    How can I access historical data?

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    • 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。

        Tomber42T 1 Reply Last reply Reply Quote 1
        • Tomber42T
          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
          • mimakaevM
            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 2
                  • don longD
                    don long
                    last edited by

                    down with surfline hail the new king. WINDYTV.com

                    1 Reply Last reply Reply Quote 0
                    • drjduncanD
                      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
                      • RK7R
                        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 LGPZG 1 Reply Last reply Reply Quote 0
                        • Gkikas LGPZG
                          Gkikas LGPZ Moderator @RK7
                          last edited by

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

                          RK7R 1 Reply Last reply Reply Quote 0
                          • RK7R
                            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 LGPZG 1 Reply Last reply Reply Quote 0
                            • Gkikas LGPZG
                              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

                              RK7R 1 Reply Last reply Reply Quote 1
                              • RK7R
                                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
                                    • steffan.watkinsS
                                      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! :)

                                      idefix37I 1 Reply Last reply Reply Quote 1
                                      • idefix37I
                                        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 GabiG
                                          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
                                          • siimS
                                            siim
                                            last edited by

                                            Use weather stations for past 20 days data.

                                            Example:
                                            https://www.windy.com/station/ad-LIEE?43.261,-2.461,5

                                            1 Reply Last reply Reply Quote 2
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