Meteorology – Page 3 – Navigation Mac

ECMWF weather data soon open to the public [1st part]

Posted on1 October 20203 January 2022

Created in 1975 at the initiative of members of the European Union, the European Center for Medium-Range Weather Forecast is an independent intergovernmental organization whose headquarters, to date, is located in Reading, England. ECMWF is funded by 22 member states and 12 associated states. It employs nearly 350 people, and its supercomputer equipment is one of the largest in Europe. For about fifteen years, ECMWF forecasts tend to be among the most accurate in the world, according to verification data from the World Meteorological Organization (WMO). ECMWF is currently headed by French meteorologist Florence Rabier, who worked at the local Meteorological Office of Météo-France.

But, since the advent of Brexit, the situation has changed. UK no longer part of the EU, ECMWF must move to a European country, and this could generate, for weather data users, rather consequences… positives ! Read more …

Receive facsimile weather maps with an iPad [Update]

Posted on23 March 202015 April 20219 Comments

An SSB receiver for leasure boating

HF Weather Fax from Black Cat Systems is an application for decoding facsimile weather maps on an iPad, an iPhone or Android device. The analysis and forecast maps are provided by radio stations around the World. Broadcast on shortwave, they can easily be received by SSB receivers as found in catalogs for pleasure.
Read more …

Receive graphical weather maps on iPad [Update]

Posted on16 March 202028 September 20236 Comments

Weather analysis and forecasting maps developed by the NOAA (USA) and the Met Office (UK) cover vast areas over the Wold. They can be obtained sending a request by email to the weather server of british company MailaSail. With the latter, many maps are available in a listing (¹) in which simply click on the links to load the request in a message ready to send. Read more …

The weather models war will take place [Update]

Posted on13 June 201915 April 20214 Comments

I relayais in December 2018 an excellent issue published on the blog of our friends Geogarage, which are a permanent duty of a press review of the best foreign articles about mapping, meteorology, and generally all matters relating to marine navigation. Here is a translation freely adapted and commented in French. Read more …

Reading : « Beaufort, l’amiral du vent" by Raymond Reding

Posted on24 October 201822 March 2023

It's a long time since I had made a reading note in this category. Lack of time, or lack of discovery ? I found again a real literary enthusiasm from reading this excellent book by Raymond Reding : " Beaufort, Admiral wind ".

Like any sailor that complies, I know the Beaufort scale since my first legs in sailing school, but, shame on me, I never wanted to know more about this famous Francis Beaufort ! Raymond Reding, went like me through Les Glénans Sailing school, finally fills this gap with the dismal delight. Read more …

Hurricane Harvey, What is the impact of climate change ?

Posted on29 August 201729 August 2017Comment

In full political news on global climate change, the terrible Hurricane Harvey questioned some scientists about the link between warming due to human activities and intense weather events increasing in recent years.

Source : National Weather Service

Michael E. Mann, distinguished professor of atmospheric science at Pennsylvania State University, director of the Penn State Earth System Science Center and author of three books, including The Hockey Stick and The Climate Wars, Dire Predictions, and The Madhouse Effect, develops a long comment in theguardian.com (¹) about it, freely translated by myself.

Iridium Mail & Web app : GRIB weather files on iPhone and iPad in open sea [Update-2]

Posted on2 June 20173 December 202216 Comments

[Update 15 February 2019] The recent update of the application Iridium Mail & Web app gives me the opportunity to refresh the ticket originally written in December 2011.

The Wi - Fi gateway Optimizer RedPort the company enables owners of a mobile satellite phone to query and receive GRIB weather files from an iPad or iPhone on the high seas, into the wild, anywhere on the world.

Having implemented and tested this solution on a long journey, it has proven perfectly operational. However, it is limited to receiving only predictions GFS weather model global, and model WW3 waves, obtained by the autoresponder US server Saildocs.

Weather4D 2.0.11 a bunch of new features and improvements

Posted on21 March 201617 July 202017 Comments

Delivered in AppStore this morning after two weeks of revisions and contre-revisions of Apple services, still more picky, the new version is finally available. On the menu and in bulk : AIS by internet with AISHub, direct access to Geogarage and cache memory chart management, new model of GRIB weather forecast from Meteo-France AROME HD for inshore races, full-screen mode, advanced distance calculations, the most visible. Under the hood also a lot of optimization for routing and power consumption. Review of detail to follow… Read more …

Météo-France GRIB files finally for free

Posted on26 July 201519 July 20204 Comments

A year after my advocacy for free European data (¹) Météo-France finally offers free access to its two famous ARPEGE and AROME models. A welcome development, initiated in 2014 by the success of MyOcean, Since then integrated into Mercator Ocean (²), but a notorious change in attitude for a public institution to which always asked to self-finance a significant portion of its budget. Forecasts from these two models are made available on Météo-France portal in the GRIB version 2 format. Since the 21 July 2015.

New GFS grid 0.25° model

Posted on12 January 201519 July 20204 Comments

By a notification corrected the 23 December 2014 (¹), the NWS (National Weather Service) NOAA has announced a major update of its weather predictions GFS model to be effective in mid-January 2015. Actually, This model is partially available on an experimental basis since early December.

NOTE

The Global Forecast System (GFS) is a model of weather forecasts produced by the National Centers for Environmental Prediction (NCEP) dependent of the NWS. Dozens of variables (²) atmospheric and terrain are available through this data set, Since temperatures, winds and precipitation to moisture from the soil and the concentration of atmospheric ozone. The world is covered by the current GFS model with a horizontal resolution 27 km between grid points to 10 days. The horizontal resolution is 70 km for forecasts between one week and two weeks. The GFS model is a coupled model, composed of four distinct models (an atmospheric model, an ocean model, an Earth model, and a sea ice model), who compete together to give an accurate picture of weather conditions. Changes are regularly made to the GFS model to improve the performance and accuracy of forecasts. Gridded data are available for download via the NOMADS servers (National Operational Model Archive and Distribution System) and widely used by application developers in the world.