finalVariables: Calculates the 7 HWP Variables.

Description Usage Arguments Details Value Examples

Description

Returns variables needed to calculate overall contribution.

Usage

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finalVariables(Years = 1990:2015, decaydistribution = c("Exponential",
  "K=2", "K=10"), halflives = halfLives, paperHL = 2.53087281800454,
  approach = NULL, fsp = fracstrpanels, fnsp = fracnonstrpanels,
  fsawn = fracsawnwood, woodToCarbon = 4.535925e-07,
  paperToCarbon = 3.9008955e-07, swpSwdsNondegradable = 0.77,
  paperSwdsNondegradable = 0.44, swpLandfillDecay = 0.0300063714528115,
  paperLandfillDecay = 0.0478032538317204,
  swpDumpDecay = 0.0420089200339361, paperDumpDecay = 0.0840178400678722,
  swpdata)

Arguments

Years

years to calculate

decaydistribution

decay distribution to use. Defaults to exponential distribution.

halflives

data frame of half lives to use. Must have a column associated with each one of 13 end uses and half life values for 1900 until the maximum year of interest.

paperHL

half life value for paper

approach

approach to calculate corresponding final variables for. If null, all final variables are calculated and returned.

fsp

Fraction of structural panel products that go to each end use. Default can be substituted with data with a column for each end use and row for years from 1900 to latest year of interest.

fnsp

Fraction of non-structural panel products that go to each end use. Default can be substituted with data with a column for each end use and row for years from 1900 to latest year of interest.

fsawn

Fraction of sawnwood products that go to each end use. Default can be substituted with data with a column for each end use and row for years from 1900 to latest year of interest.

woodToCarbon

Conversion factor to convert oven-dry tons of solid wood to Tg of Carbon.

paperToCarbon

Conversion factor to convert oven-dry tons of paper to Tg of Carbon.

swpSwdsNondegradable

Percent of solid-wood products in landfills and dumps that are not subject to decay.

paperSwdsNondegradable

Percent of paper products in landfills and dumps that are not subject to decay.

swpLandfillDecay

Decay rate of solid-wood products in landfills as a half-life in years.

paperLandfillDecay

Decay rate of paper products in landfills as a half-life in years.

swpDumpDecay

Decay rate of solid-wood products in dumps as a half-life in years.

paperDumpDecay

Decay rate of paper products in dumps as a half-life in years.

swpdata

Optional argument to provide swp production and trade time series for purposes of error analysis

Details

All units are in Gg Carbon.

Var1A = Annual Change in stock of HWP in use form consumption

Var1B = Annual Change in stock of HWP in SWDS from consumption

Var2A = Annual Change in stock of HWP in use produced from domestic harvest

Var2B = Annual Change in stock of HWP in SWDS produced from domestic harvest

Var3 = Annual Imports of wood, paper products, wood fuel, pulp, recovered paper, roundwood/chips

Var4 = Annual Exports of wood, paper products, wood fuel, pulp, recovered paper, roundwood/chips

Var5 = Annual Domestic Harvest

Var6 = Annual release of carbon to the atmosphere from HWP consumption (from fuelwood & products in use and products in SWDS)

Var7 = Annual release of carbon to the atmosphere from HWP (including fuelwood) where wood came from domestic harvest (from products in use and products in SWDS)

Value

If an approach is specified then only the variables needed for that approach will be returned. If approach is null then a data frame with nine columns (Variables 1 and 2 have two parts each) will be returned. If the decay distribution is exponential then the data frame returned will correspond to table containing final variables: '06 IPCC Tables' in the WOODCARB II spreadsheet.

Examples

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finalVariables(Years = 1950:2000)
finalVariables(halflives = halfLives * 1.25)

benjones2/WOODCARB3R documentation built on May 12, 2019, 11:58 a.m.