estimating, reporting and accounting natural disturbances some numerical examples zoltan somogyi...
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Estimating, reporting and accounting
Natural Disturbances
Some numerical examples
Zoltan Somogyi
National Agricultural Research and Innovation Centre
Forest Research InstituteBudapest, Hungary
JRC Workshop, Arona, 6 May 2014
1. How to fill in?
kt
2. BL = ? Margin = ?
STEP 1Define (in 2015 ) the types of NDs
STEP 2a - 1 developing total annual emissions excluding salvage
logging: Wildfires
…. 1990 1991 1992 …. 2006 2007 2008 2009 ….
Wildfirestotal estimated 31.7 5.6 4.5 5.0 7.1 4.4
utilized in salvage logging 11.2 1.1 0.2 2.1 2.8 1.1difference = to be used for BL and margin calculation
20.5 4.5 4.3 2.9 4.3 3.3
Disturbance typeInventory year during the calibration period
c
TOTAL ANNUAL EMISSIONS (ktCO2)
c
STEP 2a - 2 suppose we have a time series for the calibration
period for each ND typeTOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 8.0 8.6 36.2 24.0 18.1 9.6 9.1 6.9 4.3 7.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 3.2 2.6 2.0 3.3 5.5 16.0 4.5 2.4 2.3 2.8 2.0 2.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbancesOther: floods 3.5
Inventory year during the calibration periodDisturbance type
STEP 2a - 2 (including rare types)
TOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 8.0 8.6 36.2 24.0 18.1 9.6 9.1 6.9 4.3 7.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 3.2 2.6 2.0 3.3 5.5 16.0 4.5 2.4 2.3 2.8 2.0 2.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbances
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Other: floods 3.5
Inventory year during the calibration periodDisturbance type
STEP 2a - 2 (including rare types)
(even those with occasional data)
TOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 8.0 8.6 36.2 24.0 18.1 9.6 9.1 6.9 4.3 7.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 3.2 2.6 2.0 3.3 5.5 16.0 4.5 2.4 2.3 2.8 2.0 2.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbancesOther: floods 3.5
Inventory year during the calibration periodDisturbance type
STEP 2a - 2 by filling in gaps if possible/needed …
TOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 8.0 8.6 36.2 24.0 18.1 9.6 9.1 6.9 4.3 7.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 3.2 2.6 2.0 3.3 5.5 16.0 4.5 2.4 2.3 2.8 2.0 2.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbancesOther: floods 3.5
Inventory year during the calibration periodDisturbance type
STEP 2a - 2 … create consistent and initially complete time series
TOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 3.8 8.0 8.6 36.2 24.0 18.1 1.5 9.6 9.1 6.9 4.3 7.9 3.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 1.8 3.2 1.3 2.6 2.0 3.3 5.5 16.0 4.5 1.0 2.4 2.3 1.7 2.8 2.0 2.6 0.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbancesOther: floods 3.5
Inventory year during the calibration periodDisturbance type
STEP 2a - 3 sum up all annual emissions of the time series
TOTAL ANNUAL EMISSIONS (MtCO2)
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Wildfires 50.7 6.7 7.3 4.8 5.1 3.8 8.0 8.6 36.2 24.0 18.1 1.5 9.6 9.1 6.9 4.3 7.9 3.9 11.4 5.3 15.2 15.5 22.0Insect attacks, diseases12.7 2.4 1.8 3.2 1.3 2.6 2.0 3.3 5.5 16.0 4.5 1.0 2.4 2.3 1.7 2.8 2.0 2.6 0.6 3.5 2.1 1.7 1.5Extreme weather events: droughts
2.1 2.4 3.8 2.2 1.1
Geological disturbancesOther: floods 3.5
Inventory year during the calibration periodDisturbance type
SUM 63.4 11.2 9.1 8.0 6.3 6.4 10.0 14.3 45.2 40.0 22.6 2.4 12.1 15.2 8.6 7.1 9.9 6.5 14.2 8.9 15.0 18.3 27
STEP 2btotal area and
area-specific emissions (FM) = = total annual emissions / total area
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
45.00 44.96 44.91 44.87 44.82 44.78 44.73 44.69 44.64 44.60 44.55 44.51 44.46 44.42 44.37 44.33 44.29 44.24 44.20 44.15 44.11 44.06 44.02
1.41 0.25 0.20 0.18 0.14 0.14 0.22 0.32 1.01 0.90 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.20 0.34 0.42 0.61
TOTAL ANNUAL AREA OF CATEGORY (FM) (million ha)
AREA SPECIFIC EMISSIONS OF CATEGORY (FM) (tCO2 eq ha-1)
Inventory year during the calibration period
STEP 3-aarea-specific bl for FM: iteration by „default” method
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
1.41 0.25 0.2 0.18 0.14 0.14 0.22 0.32 1.01 0.9 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
0.37 0.33 1.03
Exclude: 1.41New data series: 0.25 0.2 0.18 0.14 0.14 0.22 0.32 1.01 0.9 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
(N = 23)Mean: STD: Mean + 2*STD:
ITERATION 1:
Inventory year during the calibration period
STEP 3-aarea-specific bl for FM: iteration by „default” method
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
1.41 0.25 0.2 0.18 0.14 0.14 0.22 0.32 1.01 0.9 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
0.37 0.33 1.03
Exclude: 1.41New data series: 0.25 0.2 0.18 0.14 0.14 0.22 0.32 1.01 0.9 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
(N = 23)Mean: STD: Mean + 2*STD:
ITERATION 1:
Inventory year during the calibration period
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
0.25 0.2 0.18 0.14 0.14 0.22 0.32 1.01 0.9 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
0.33 0.25 0.82
Exclude: 1.01 0.9New data series: 0.25 0.2 0.18 0.14 0.14 0.22 0.32 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
2.71
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
0.25 0.2 0.18 0.14 0.14 0.22 0.32 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42 0.61
0.26 0.15 0.57
Exclude: 0.61New data series: 0.25 0.2 0.18 0.14 0.14 0.22 0.32 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
0.25 0.2 0.18 0.14 0.14 0.22 0.32 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42
0.24 0.14 0.52
Exclude:New data series: 0.25 0.2 0.18 0.14 0.14 0.22 0.32 0.51 0.05 0.27 0.34 0.19 0.16 0.22 0.15 0.32 0.2 0.34 0.42
(N = 19)
Inventory year during the calibration period
Inventory year during the calibration period
Inventory year during the calibration period
STD: Mean + 2*STD:
STD: Mean + 2*STD:
(N = 22)
(N = 20)
ITERATION 4(FINAL):
Mean: STD: Mean + 2*STD:
ITERATION 2:
Mean:
ITERATION 3:
Mean:
bl =
STEP 3-afrequency distribution of emissions for FM
STEP 3-afrequency distribution of emissions for FM
bl
STEP 3-aemissions for FM by rank
bl
STEP 3-aemissions for FM by rank
STEP 3-bbl for FM: „alternative” methods
• bl = 0
• bl = minimum historical emission
• bl = a value that was developed by using alternative methods of excluding outliers (can be up to approximately the bl by the default method)
STEP 3Projected mean area for the CP: FM
STEP 3calculate BL from bl
and projected mean area for the CP: FMdefault method
2013 2014 2015 2016 2017 2018 2019 2020
43.98 43.93 43.89 43.84 43.80 43.76 43.71 43.67
INVENTORY YEAR DURING THE COMMITMENT PERIOD
AREA SPECIFIC BL of FM = 0.24 (tCO2 eq ha-1)
BL FOR FM = 43.82 * 0.24 = 10.70 (million tCO2 eq)
TOTAL PROJECTED ANNUAL AREA OF FM (million ha)
MEAN = 43.82 (million ha)
STEP 3-bbl for AR
if there is no data for ND emissions from AR
• assume, and explain, correlation between ND emisisons for FM and AR (e.g. based on species ratio and site conditions; e.g. emissions from wildfires on AR are half of those on FM)
• develop area-specific time-series of emissions for AR
• calculate bl and STD for AR; e.g. bl = 0.12 tCO2eqha-1
STEP 3Projected mean area for the CP: AR
2013 2014 2015 2016 2017 2018 2019 2020
2.85 2.99 3.14 3.28 3.43 3.58 3.72 3.87
AREA SPECIFIC BL of AR = 0.12 (tCO2 eq ha-1)
BL FOR AR = 3.36 * 0.12 = 0.41 (million tCO2 eq)
INVENTORY YEAR DURING THE COMMITMENT PERIOD
TOTAL PROJECTED ANNUAL AREA OF AR (million ha)
MEAN = 3.36 (million ha)
STEP 3calculate BL from bl
and projected mean area for the CP: ARdefault method
STEP 4Develop the margin (M) – default method, FM
m = 2*STD
M = m * projected AREA = = (2*0.14 tCO2eqha-1) * 43.82 Mha
= 12.27 MtCO2eq
bl m=2*STD
STEP 4Develop the margin (M)
STEP 5ensure there is no expectation of
credits/debits:
1. assume total annual emissions for the CP that are equal to those of the calibration period
2. calculate total debits and credits3. check if the calculated net credit = 0, in which
case BL and M are OK
• transparently check that BL is included in FMRL
Photo: Ipolyerdő Zrt.
when in doubt,refer to the 2013KPSL