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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Developing a statistical methodology for the asses
sment and management of peatlands - David Large (
University of Nottingham)
DTSTART;TZID=Europe/London:20200908T141000
DTEND;TZID=Europe/London:20200908T143000
UID:TALK150697AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/150697
DESCRIPTION:In good condition\, peatlands are the most efficie
nt carbon store of all soils. \; The UK has 2
\;Mha of peatlands (10% land area). 80% of thes
e peatlands are damaged to some degree and estimat
ed to emit 10 Mt C a-1\, a similar magnitude to oi
l refineries or landfill sites. \; Restoring d
egraded peatlands to halt carbon losses is an esse
ntial part of a global strategy to fight climate c
hange. In the UK\, £\;100s millions of public
money have been pledged to restore peatland\, yet
we do not have a reliable and cost-effective way
to direct and evaluate investment in restoration o
ver large and often remote areas.  \; In a p
revious research project\, we showed that peatland
condition can be found from satellite data that m
easures surface motion of the peat. However\, our
satellite-based approach produces too much complex
data that cannot be reliably and consistently ana
lysed by eye.  \; To address this\, we will
develop a new statistical method that can robustly
and consistently quantify the changes in the peat
land landscape from the satellite data. This requi
res methods capable of handling extremely large an
d complex structured datasets. In statistics\, a n
ew framework\, known as Object-Oriented Data Analy
sis (OODA)\, is ideally suited to achieve this pur
pose by building models based on suitable choices
of data objects. OODA can be used for developing p
arsimonious models for detecting change\, and for
quantifying uncertainty in predictions. OODA of th
e satellite data as functions of space and time wi
ll enable the modelling of trends and variability
in the different regions\, and the detection of ch
ange in the peatland.  \; The result will be
a series of maps that illustrate the change in pe
atland landscape over time that are designed to be
used by land managers and policy makers to guide
decision making\, help reduce unnecessary spending
and evaluate investment.  \;
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:INI IT
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