Annual Report and Accounts 2006/7 - CEDA Repository
Annual Report and Accounts 2006/7 - CEDA Repository
Annual Report and Accounts 2006/7 - CEDA Repository
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12 13 Management commentary<br />
Water shortages<br />
Overall, it was the wettest May in Engl<strong>and</strong><br />
<strong>and</strong> Wales for more than quarter of a<br />
century although the above-average<br />
rainfall was not enough to remedy water<br />
shortages particularly across south-east<br />
<strong>and</strong> central southern Engl<strong>and</strong> following<br />
two consecutive dry winters. As summer<br />
<strong>2006</strong> got underway the Environment<br />
Agency, working closely with the Met<br />
Office, grew increasingly concerned<br />
about public water supplies in Kent,<br />
Sussex <strong>and</strong> London. By the end of the<br />
month, Drought Orders <strong>and</strong> hosepipe<br />
bans had already been imposed in some<br />
areas, while the rest of the country was<br />
advised to watch the amount of water<br />
it used.<br />
Ensemble forecasting<br />
When expensive actions depend on a<br />
forecast, it is important to know its<br />
uncertainty. The Met Office ensemble<br />
forecasting system (MOGREPS) was<br />
developed to provide uncertainty<br />
estimates for short-range forecasts.<br />
Instead of running just a single forecast,<br />
the model is run a number of times from<br />
slightly different starting conditions to<br />
take account of the chaotic nature of the<br />
atmosphere. On some days, the forecasts<br />
from different ensemble members are all<br />
quite similar, which gives us confidence<br />
that we can issue a reliable forecast. On<br />
others, the members can differ widely<br />
<strong>and</strong> we have to be more cautious. An<br />
extended 15-day ensemble was<br />
implemented this month as part of the<br />
World Meteorological Organization’s<br />
THORPEX research programme to<br />
investigate whether a multi-model<br />
ensemble can extend skilful weather<br />
forecasting two weeks ahead.<br />
Aviation seminar<br />
A successful half-day aviation customer<br />
seminar was held at Heathrow, London<br />
this month. It was attended by 30<br />
delegates representing various airlines,<br />
the British Airports Authority <strong>and</strong> our<br />
flight briefing partner, SITA. Presentations<br />
were given on subjects as wide-ranging<br />
as probability forecasting, centralising<br />
production <strong>and</strong> forecasting at Heathrow,<br />
as well as an overview of Met Office<br />
services to civil aviation. There was an<br />
opportunity for discussion, product<br />
demonstration <strong>and</strong> feedback, which was<br />
positive <strong>and</strong> encouraging.<br />
Arctic adventurers<br />
When British adventurers the Arctic Foxes<br />
set out to become the first all-female team<br />
to cross the Greenl<strong>and</strong> ice-cap they<br />
sought Met Office help in getting there<br />
<strong>and</strong> back again safely <strong>and</strong> in record time.<br />
The Foxes reported that speaking to our<br />
forecasters each day was one of the<br />
highlights of their successful expedition.<br />
National treasure<br />
The National Meteorological Library holds<br />
one of the world’s finest collections of<br />
weather <strong>and</strong> climate resources. The<br />
Library is open to visitors five days a<br />
week, but also offers a free national<br />
enquiry service for weather-related<br />
topics. It recently launched a<br />
comprehensive online subject index that<br />
now makes it much easier for users to find<br />
key information from within the Library<br />
catalogue. As a result, helped by the<br />
Library, this wealth of resources is more<br />
visible, accessible <strong>and</strong> useful to the<br />
nation.