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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

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Current Races:

Simonstown to St Helena 2024

Since the weather in the northern hemisphere is not pleasant, we stay in the climate of southern Africa to hold another race from the All-Round Championship series. Our Gunboat_90s will have to cover the 1700nm route from Simonstown to the island of Saint Helena, which became the last haven of Emperor Napoleon.
Race #1785
INFO by brainaid.de
GB90 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ1 - ARCH - SUPSOL - SYC
Race starts: Feb 26th 17:00 Registration Open!
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San Diego to Puerto Vallarta 2024

Set sail for adventure with Sailonline's third epic voyage, in collaboration with the San Diego Yacht Club! Prepare for the ultimate challenge: a 1000-nautical-mile race to Puerto Vallarta along the stunning Mexican Riviera. As the real fleet ventures forth, we'll be right beside them, guiding our Santa Cruz 70s toward the sun-soaked shores of Puerto Vallarta! Are you ready to join the excitement?!
Race #1784
INFO by brainaid.de
Santa Cruz 70 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Feb 24th 20:00 Registration Open!
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Buenos Aires to Punta del Este TIMED Race 2024

Hello Argentina! Hello Uruguay! We are back after fourteen years, on the brown waters of the Rio de la Plata to race from the shores of Buenos Aires to the beaches of Punta del Este. This is a TIMED race, so be sure to re-register using the link below after you have finished a run, so that you can be ready to go again if fairer winds present themselves!
RE-REGISTER HERE to race again after finishing a run.
Race #1783
INFO by brainaid.de
Carkeek 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
RANKING:
TRQ1 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
March 2 at 2300 UTC
Race starts: Feb 18th 12:00 Registration Open!
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Perth to Mombasa 2024


Embark on an exhilarating maritime odyssey - the second leg of the 2024 Ocean Race Championship. This daring expedition charts a 4500nm course from the shores of modern Perth to the historic port city of Mombasa. Braving the vastness of the Indian Ocean in our high-performance OPEN 60, this voyage promises to be not only a test of skill and strategy but an immersive experience in the untamed beauty of the world's oceans. Join us as we push the boundaries of seafaring prowess on this epic adventure, where every wave will tell a tale of determination and triumph.
PRIZE: SMPF
Race #1762
INFOby brainaid.de
Open 60 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ1 - OCCH - SUPSOL - SYC
RACE CLOSE: Thursday,
February 29 at 2300 UTC.
Race starts: Feb 05th 11:00 Registration Closed
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