Download presentation

Presentation is loading. Please wait.

Published byMorgan Nash Modified over 3 years ago

1
sulphur dioxide- space and time Marian Scott Dept of Statistics, University of Glasgow NERC August 2013

2
Example: trends in atmospheric SO 2 levels over space- EMEP network Daily measurements made at more than 100 monitoring stations over a 20 year period over Europe: Complex statistical model developed to describe the pattern, the model portions the variation to trend, seasonality, residual variation and to include changepoints Main question: – what is the long term trend and is it the same over Europe?

4
Additive models for trend but including space ln(SO 2 ) = f ym (years, months) + f ll (latitude, longitude) + ln(SO 2 ) = f y (years) + f m (months) + f ll (latitude, longitude) + with appropriate assumptions on

5
ln(SO 2 ) = f y (years) + f m (months) + f ll (latitude, longitude) + ln(SO 2 ) = f ym (years, months) + f ll (latitude, longitude) +

Similar presentations

OK

What can Statistics do for me? Marian Scott Dept of Statistics, University of Glasgow Statistics course, September 2007.

What can Statistics do for me? Marian Scott Dept of Statistics, University of Glasgow Statistics course, September 2007.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google