PPS Arctic Norway:

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• PPS Arctic Norway
• What have we been doing?
• during the last year ()
• during the last 2 days

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What we have been doing over the last 2
days? Discussion of data already collected for
WP1 and WP2 - airborne remote sensing data plus
field data Planned WP1 activities, focussed on
Ingrid Mathisens PhD project - stand
structure - age structure - growth rate -
other structural parameters (canopy density
etc.) Planned WP2 activities (applicable beyond
Norwegian project) - circumarctic treeline (or)
mapping using satellite imagery - validation
from field data (with appropriate protocols) -
determination of past changes at circumarctic and
local scales Outline of WP3 activities -- and
implications for protocol development
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Airborne remote sensing data collected by NERC
ARSF U of Cambridge ULM Scanner imagery - all
sites - July 2004 LiDAR data - NE sites only -
July 2005
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Example study site Porsangmoen, Norway
Pinus sylvestris, Betula pubescens
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Airborne multispectral imagery (ATM _at_ 4.5 m, CASI
_at_ 3.6 m) collected during NERC ARSF campaign
20.07.04
Imagery can be classified, but some problems
from variable imaging/illumination
geometry inadequate georeferencing (difficult to
mosaic image strips) spatial resolution
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Optech ALTM3033 LiDAR data Gives ground
surface and tree height sampling (grid)
interval around 2 m (resolves trees) height
accuracy around 10 cm datasets are initially
awkward to work with
Photo from Naturhistoriska Riksmuseet, Sweden
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Resolution of pulse difference data allows
individual trees to be identified
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Forest structural parameters - distance to
nearest tree (Euclidean Distance Map with tree
anything over 2 m)
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position of forest edge varies systematically
with resolution
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Field data from Annika - structural parameters
along 50 m transects, plus area
statistics Integration with field data planned
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MODIS data products Existing land cover
products are not optimised for arctic/subarctic
NDVI, LAI etc products have significant scope
for treeline characterisation
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MODIS data products present interesting
possibilities but require validation for arctic
and investigation of scaling relations
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MODIS 12Q1 type 1 Land cover based on IGBP
classification
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MODIS 12Q1 type 2 Land cover based on University
of Maryland modification of IGBP classification
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MODIS 12Q1 type 5 Land cover based on Plant
Functional Types
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Principal Component Analysis of temporal
variation in LAI
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Circumpolar mapping of the TTI use of
satellite Remote Sensing data essential need
to use MODIS/MERIS data with spatial resolution
1 km (even so, data volumes are large and can be
enormous without care) need to understand
scale relationships (how does an ecologists
tree line differ from a satellites tree
line? need validating data from a wide range
of sites around the Arctic
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• PPS Arctic Norway tasks
• - organise by WP, (sub-) objectives, tasks,
  linkages, timetable
• a possible model for other groups within PPS
  Arctic?

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