Bonjour à tous,
Je découvre zyGrib et je n' ai qu' une seule chose à dire : waouw !!!
Ma question porte sur la visibilité horizontale, est-elle prise en compte ?
Je me pose la même question concernant la couverture nuageuse à différentes altitudes.
Je fais référence aux metar/taf.
Pour info, j' utilise la version 3.9.7 sur une ubuntu 10.10 et tout ce que j' ai testé jusqu' à présent fonctionne nickel.
Merci pour vos réponses et voilà bien un logiciel que je vais suivre de près
Guy
Visibilité horizontale ?
Moderator: jza
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Ici on parle français ou anglais, comme on veut, comme on peut, mais on n'oublie jamais que l'on discute entre humains.
Il ne faut surtout pas oublier les mots magiques: bonjour, salut, merci, etc.
Les messages impolis sont rejetés et restent sans réponse.
Il faut souvent être patient, car il y a plein d'autres activités encore plus passionantes dans notre vie.
Here we speak french or english, as we want, as we can, but we never forget that we discuss between humans.
Do not forget the magic words: hello, hi, thank you, etc.
Rude messages are rejected and remain unanswered.
It is often necessary to be patient because there are many other activities even more exciting in our life.
Ici on parle français ou anglais, comme on veut, comme on peut, mais on n'oublie jamais que l'on discute entre humains.
Il ne faut surtout pas oublier les mots magiques: bonjour, salut, merci, etc.
Les messages impolis sont rejetés et restent sans réponse.
Il faut souvent être patient, car il y a plein d'autres activités encore plus passionantes dans notre vie.
Here we speak french or english, as we want, as we can, but we never forget that we discuss between humans.
Do not forget the magic words: hello, hi, thank you, etc.
Rude messages are rejected and remain unanswered.
It is often necessary to be patient because there are many other activities even more exciting in our life.
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- Posts: 5
- Joined: 21 Apr 2011 11:19
Re: Visibilité horizontale ?
Peut-etre, je peux repondre en anglais.
Parameters such as visibilty and cloud amount are likely to be derived empirically from calculations of the relative humidity and some other outputs. I guess that there will be other factorsaffecting visibility that the models do not know about - such as dust and other pollution in the air. It is possible that these migh be taken into account using model output statistics, but I doubt it.
Take the values as horizontal visibilty and cloud amount as would be observed from the ground. Expect accuracies at the level of Good, Moderate, Poor, Fog at best.
Parameters such as visibilty and cloud amount are likely to be derived empirically from calculations of the relative humidity and some other outputs. I guess that there will be other factorsaffecting visibility that the models do not know about - such as dust and other pollution in the air. It is possible that these migh be taken into account using model output statistics, but I doubt it.
Take the values as horizontal visibilty and cloud amount as would be observed from the ground. Expect accuracies at the level of Good, Moderate, Poor, Fog at best.
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