forest biomass dataset alterra, wageningen ur and european forest institute geerten hengeveld, katja...

Forest biomass dataset

Alterra, Wageningen UR and European Forest Institute

Geerten Hengeveld, Katja Gunia, Markus Didion, Sergey Zudin, Sandra Clerkx, Mart-Jan Schelhaas

Validation data for the CARBONES CCDAS system

Forest pools and uncertainties (annual)●Forest area (km2)●Timber volume (m3)●Aboveground biomass (kg)●Carbon in aboveground biomass (kg)●Belowground biomass (kg)●Carbon in belowground biomass (kg)●Total biomass (kg)●Carbon in total biomass (kg)●Changes in pools per 5 years

Data

FAO-FRA (Global Forest Resources Assessments) MCPFE (Europe) UNECE

●Per Country●1948-2011 (minimal 5 year interval)●Forest Area●Growing Stock

IPCC 2006 good practice guidance for biomass conversion and expansion factors to estimate above-ground and below-ground biomass and carbon

Processing

Quality check: remove outliers Interpolate in between data points Extend values outside data range (flat) Gridding, relative to current forest cover map Assign uncertainties

Calculations

Stock per Area

1 degree grid

Growing Stock Growing

Stock Growing Stock

IPCC constants

Forest area

Growing Stock

Forest map

Country

Growing Stock Growing

Stock Aboveground

biomass/carbon

Uncertainty assessment

Base uncertainty●3 classes (1,2,3 points)

●Trend over all records●Coefficient of variation of detrended records

Methodology uncertainty●0.025 point per year (pre 1990)

Interpolation uncertainty●0.1 point per year

Technical specifications

1 degree grid Global cover Mollweide projection, Datum WGS84 NetCDF file

Data policy

Free to use Proper referencing (Hengeveld et al., in prep) Downloadable at

●the CARBONES portal●or

http://opendap.cgi-systems.nl/thredds/catalog/projecten/EuropeanForest/carbones/catalog.html

Exemple: above ground forest biomass(5 years mean) around 2005

Reference:

Hengeveld, G.M.H., K. Gunia, M. Didion, S. Zudin, A.P.P.M. Clerkx, M.J. Schelhaas. Gridded maps as derived from a compilation of global forest biomass estimates 1950-2010. To be submitted to Earth System Science Data.