UK MetOffice:
“The major barrier to resuming flight has been understanding tolerance levels of aircraft to ash. Manufacturers have now agreed increased tolerance levels in low ash density areas.”
Our way forward is based on international data and evidence from previous volcanic ash incidents, new data collected from test flights and additional analysis from manufacturers over the past few days. It is a conservative model allowing a significant buffer on top of the level the experts feel may pose a risk.
The CAA’s Revised Airspace Guidance will be based on new engine ash tolerance levels and will apply to low ash density areas identified by the Met Office. This information will be circulated on a six hourly basis. Airspace where eash levels exceed this new limit will be no fly zones.
Due to these changes our daughter returned to Japan after five days unintended break. Today she has arrived in Tokyo.
Published on
April 15, 2010 in
Weather.
Tags: Asche, aschewolke, ash, ash cloud, ausbreitung, aviation, colour code red, forecast, iceland, island, luftverkehr, vorhersage, vulcano, vulkan.
Published on
March 23, 2008 in
Weather.
Sorry, this entry is only available in Deutsch.
Tomorrow, on 11.3.2008, the Internet presentation of Deutscher Wetterdienst (DWD) will change. This is an important event. On days with severe weather, millions of page-hits are counted.
During storm “Kyrill” the last year, a storm predicted accurately in its extent and strength by DWD (”Stay at home”), in the morning hours the access to DWD’s pages broke down. There were other providers with similiar problems, but especially DWD was accused not to provide sufficient server capacity. In fact the firewall capacity was insufficient. Additional capacity was already ordered, but delivered too late. Just before the maximum of hits at noon, a firewall protection by-pass was setup (only for this day).
Now, in addition to www.dwd.de the following URL will provide undisturbed access to weather warnings:
www.wettergefahren.de
It is important that other authorities such as Technisches Hilfswerk, fire brigades, etc. have even unimpeded access to DWD’s warnings in all situations.
The new website is technically up-to-date and well-structured. The presentation is a very comprehensive and detailed, it is worth to look about the various pages. I believe this is an important step of DWD to improve its service.
Due to DWD’s excellent technical team, I assume that everything will go smoothly. (Nevertheless, I’ll keep my fingers crossed!)
