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Profile for ita10267



Name ita10267
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Posts88
  • R.I.P. J24Opla
    Board » General Discussion
    Yesterday we received the sad news that Claudio (aka J24Opla) sadly passed away.
    Claudio was a great sailor, mostly appreciated in the lakes Maggiore and Garda and also a very active member of SOL community. Unfortunately he became very ill and COVID was not nice to him.

    May he rest in peace and sail away in smooth sea.

    Andrea (aka ita10267)
  • Re: RIP psail - Joao Malafaia
    Board » In memoriam
    Still shocked by the terrible news! Had quite a few professional chat with Joao and I will remember him for is clear and concise way of thinking. Like to remember him sailing, IRL or virtually, with the same spirit!

    ciao
  • Re: RTW start
    Board » Sailonline Race Committee » Races
    will you?
  • Re: RTW start
    Board » Sailonline Race Committee » Races
    Well Done! It was the right decision to make. One of the reason SWR is the main event of SOL year is that we really get to test ourselves against the top navigators. And with 18 hours of headstart (and a totally different wx configuration) it would have been a pity to race this one on our own.

    Thanks to the SRC and management for the reaction in such a short time!
  • Re: RTW start
    Board » Sailonline Race Committee » Races
    It appears that we are starting despite the new postponement of the IRL race. I am in total disagreement with this decision as it makes incomprehensible the first postponement. Hope that the SRC can reconsider and delay the start accordingly.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    In synoptic conditions, i.e. wind given by large pressure systems, forecast are simpler and more reliable (see the Bos-New race with the heavy storm). In fluky conditions, with basically no pressure gradient, wind is given by "local"effect such as cloud coverage etc. So yes, on mesoscale, weather is less "consistent".

    As a comparison, GFS is "averaged" over a much bigger gridsize, so all the small scale variation are zeroed and you ave a more stable but less interesting windfield. On the other hand NAM model, on a 0.1deg scale, has the same behaviour.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    JB,
    at present time we have to allow for some WX data outside the race course (the purple line). This to allow predictor to work properly in the client. In this race we have used 0.5deg from each side. In the end we had more than 30% of datapoints "useless" for the race. In an optimal condition (no points outside race area), wxfile should have been around 4MB, which travels compressed now, so perfectly usable for the "desktop" client.
    Regarding mobile, probably it has some problems (depending on hardware) regarding memory and cache. Probably Zappe can look into that.
    Finally, the WRF is defined every hour, so dataset is 3X for the same resolution compared to GFS. As outlaw commented, we should push for even higher time resolution (1 frame every 15min). In this case probably we'll have denser frames for the first 6hrs and sparser afterwards.
    Ciao
    a.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    forecast for sunday morning
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    A small video on high resolution weather

    http://youtu.be/n5ThrmvMJxA
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    so, you are referring to the grid discretization.
    In SOL this changes from race to race. Usually we start from 0.5x0.5 deg GRIB file from NOAA which is then interpolated to the grid of our interest. In Leg4, for the first time, we are running the ocean on a 1x1 deg grid. The "pointy" edges are caused by the interpolation algorithm (bilinear), which is the same we use to get wind in between grid points.
    The WRF model we are using in the BOS-NEW race is evaluated on a much denser grid. This is not an interpolation process but a complete physical evaluation. The 0.5degx0.5deg GRIBS from NOAA are taken as boundary and starting conditions then the calculations are done on a powerful computer. The result is a 0.05X0.05 deg GRIB.

Races

Next Race: 00d 00h 00m


Current Races:

Galveston to Galway 2022
For the second time, we will be able to test our navigational skills in this massive ocean race across the Gulf of Mexico and the Atlantic Ocean! You can navigate the 4980 NM to Galway, Ireland in any direction, of course within the designated race boundary area. Your only task is to reach the finish line in the best place, preferably at the highest podium. Prepare your C2R 74 well for the race and take advantage of all its opportunities. Good luck!
PRIZE: SMPF
Race #1592
INFO by brainaid.de
C2R 74 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ3 - OCCH - SUPSOL - SYC
Race starts: Jul 09th 18:00 Registration Open!

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Sines to Bermuda 2022
Another race with the finish line in Bermuda. This time we will start from Sines in Portugal. There is 3213nm ahead of us across the Atlantic Ocean. Previously, this race was one of the stages of the Rendez-Vous 2017 Tall Ships Regatta. This time we will use this route in the race played as part of the SOL All Round Championships and we will use our Orange 125 fast catamarans to cover it. We invite you to participate.
Race #1591
INFO by brainaid.de
Orange 125 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ3 - ARCH - SUPSOL - SYC
Race starts: Jul 04th 04:00 Registration Open!

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PIC Insurance 2022 - Race 1
Welcome to Auckland, New Zealand! Sailonline is happy to provide our SOLers with the virtual version of the brilliant three-race SSANZ two-handed series which will be sponsored by PIC Insurance Brokers this year. We will be racing around the beautiful waters of the Hauraki Gulf off New Zealand’s North Island. Our first race of the Series is a 50-miler out to Motuora Island and back. Our direct competitors as always in our Young 88s will be the real racers of the Young 88 Association who will be participating in the Railblaza fleet in the real life race!
Race #1598
INFO by brainaid.de
Young 88 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SPRCH - SPRQ3 - SUPERSOL - SSANZ - SYC
RACE CLOSE: Wednesday,
July 6 at 2300 UTC.
Race starts: Jul 01st 21:15 Registration Closed

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Geraldton to Cape Town 2022
A race in the Southern Indian Ocean is always entertaining, especially in a Riptide 50. Traditionally the course would be West to East, to take advantage of the prevailing winds, but this time the SRC is challenging us to an E-W course, from Geraldton in Western Australia to Cape Town in South Africa. A brief 4800nm!
PRIZE: SMPF
Race #1575
INFO by brainaid.de
Riptide 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ2 - OCCH - SUPSOL - SYC
RACE CLOSE: Thursday,
July 14 at 2300 UTC.
Race starts: Jun 12th 05:00 Registration Closed

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