Climate Model - Revision history

JeanetteEggers: /* Input data */

2022-12-07T07:07:00Z

Input data

Peder: /* Input data */

2016-03-23T09:51:01Z

Input data

Peder: /* How the model works */

2016-03-23T09:47:00Z

How the model works

Peder: /* Introduction */

2016-03-23T09:45:53Z

Introduction

Peder: /* Introduction */

2016-03-23T09:44:14Z

Introduction

Peder: /* Introduction */

2016-03-23T09:43:55Z

Introduction

Peder at 09:43, 23 March 2016

2016-03-23T09:43:13Z

Peder: /* Model settings that a user can modify */

2016-03-23T09:42:57Z

Model settings that a user can modify

Peder at 09:41, 23 March 2016

2016-03-23T09:41:59Z

Peder at 09:39, 23 March 2016

2016-03-23T09:39:33Z

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 With the installation of Heureka, there are three climate model scenarios available:
-:'''MPI 4.5''': Based on Max Planck Institute [http://www.mpimet.mpg.de/en/science/models/mpi-esm/ MPI-ESM model] using radiation scenario RCP 4.5, which assumes that radiative forcing stabilises at 4.5 W/m² before the year 2100. See also [http://www.smhi.se/en/climate/climate-scenarios#area=eur&dnr=0&sc=rcp45&seas=ar&var=t RCP4.5 at SMHI's homepage].
+:'''MPI 4.5''': Based on Max Planck Institute [http://www.mpimet.mpg.de/en/science/models/mpi-esm/ MPI-ESM model] using radiation scenario RCP 4.5, which assumes that radiative forcing stabilises at 4.5 W/m² before the year 2100. See also [https://www.smhi.se/en/climate/future-climate/basic-climate-change-scenario-service/sverige/medeltemperatur/rcp45/2071-2100 RCP4.5 at SMHI's homepage].
-:'''MPI 8.5''': Based on Max Planck Institute [http://www.mpimet.mpg.de/en/science/models/mpi-esm/ MPI-ESM model] using radiation scenario RCP 4.5, which assumes that radiative forcing stabilises at 8.5 W/m² before the year 2100.. See also [http://www.smhi.se/en/climate/climate-scenarios#area=eur&dnr=0&sc=rcp85&seas=ar&var=t RCP8.5 at SMHI's homepage]
+:'''MPI 8.5''': Based on Max Planck Institute [http://www.mpimet.mpg.de/en/science/models/mpi-esm/ MPI-ESM model] using radiation scenario RCP 4.5, which assumes that radiative forcing stabilises at 8.5 W/m² before the year 2100.. See also [https://www.smhi.se/en/climate/future-climate/basic-climate-change-scenario-service/sverige/medeltemperatur/rcp85/2071-2100 RCP8.5 at SMHI's homepage]
 :'''ECHAMS_A1B''': Based on Max Planck Institute climate model [http://www.mpimet.mpg.de/en/science/models/echam.html ECHAM] using emission scenario SRES A1B.

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 :'''ECHAMS_A1B''': Based on Max Planck Institute climate model [http://www.mpimet.mpg.de/en/science/models/echam.html ECHAM] using emission scenario SRES A1B.
-====See also====
+====About the climate scenarios====
 :[http://www.smhi.se/en/climate/climate-scenarios/haag_en.html About SMHI climate scenarios]
 :[http://shop.skogsstyrelsen.se/shop/9098/art35/31485335-a7bfe8-Klimat_webb.pdf Climate scenarios used in Heureka in the SKA 15 project]
 :[http://heurekaslu.org/help/en/index.html?importera_klimatscenario.htm Import climate scenario in Heureka Helpdoc].
 ==Model settings that a user can modify==

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 The climate response model affects the following variables directly:
-*The biological age or basal area depending on user setting
+*The biological age or basal area depending on [[ControlTable_Climate_Model#Apply Age Adjustment| user setting]]
 *Site index (SIS)
 *Vegetation index

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   ResearchNotes 163, University of Joensuu, Forest Faculty, pp. 45-115.
   <nowiki>ISBN 952-458-652-5</nowiki></ref>.
-BIOMASS is computationally demanding to run and not suitable to include directly in Heureka’s growth simulator. Therefore BIOMASS was run for different parts of the country and different forest conditions, and the results have been used to construct an approximation model of BIOMASS.
+BIOMASS is computationally demanding to run and not suitable to include directly in Heureka’s growth simulator. Therefore BIOMASS has been run for different parts of the country, forest conditions and climate scenarios, and the results have been used to construct an approximation model of BIOMASS.
 ==How the model works==

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 <ref>Freeman M & Linder S. 2001. Boreal forests. In: Long-term effects of climate change
   on carbon budgets of forests in Europe (eds. Kramer, K. & Mohren, G.M.J.) pp.
-–203. Alterra-report 194. Alterra, Green World Research, Wageningen, 2001</ref>,
+–203. Alterra-report 194. Alterra, Green World Research, Wageningen, 2001</ref>
 <ref>Bergh J., Freeman M., Sigurdsson B. D., Kellomäki S., Laitinen K., Niinistö S., Peltola, H. & Linder S. 2003. Modelling the shortterm effects of climate change on the
   productivity of selected tree species in Nordic countries. Forest Ecology and

@@ Line 6: / Line 6: @@
 <ref>Bergh J., McMurtrie R. E. & Linder S. 1998. Climatic factors controlling the
   productivity of Norway spruce: a modelbased analysis. Forest Ecology and
-  Management 110: 127–139.</ref>,
+  Management 110: 127–139.</ref>
 <ref>Freeman M & Linder S. 2001. Boreal forests. In: Long-term effects of climate change
   on carbon budgets of forests in Europe (eds. Kramer, K. & Mohren, G.M.J.) pp.
@@ Line 12: / Line 12: @@
 <ref>Bergh J., Freeman M., Sigurdsson B. D., Kellomäki S., Laitinen K., Niinistö S., Peltola, H. & Linder S. 2003. Modelling the shortterm effects of climate change on the
   productivity of selected tree species in Nordic countries. Forest Ecology and
-  Management 183:327–340</ref>,
+  Management 183:327–340</ref>
 <ref>Freeman M, Morén A-S, Strömgren M & Linder S. 2005. Climate Change Impacts on
   Forests in Europe: Biological Impact Mechanisms. In: Management of European

← Older revision		Revision as of 09:43, 23 March 2016
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	[[Category:Model]]		[[Category:Model]]
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	[DRAFT]. Last updated 2016-03-23.		[DRAFT]. Last updated 2016-03-23.

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 ==Model settings that a user can modify==
-====Selected climate scenario====
+See [[ControlTable_Climate_Model|Climate Model control table]].
 ==References==
 <references />

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 [[Category:Model]]
-TODO.
 ==Introduction==
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 ====Model parameters====
 Several model parameters can be modified via the [[ControlTable_Climate_Model|Climate Model control table]].
 ==References==
 <references />

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 [[Category:Model]]
 TODO.
-<!--
 ==Introduction==
 In Heureka, the effect of global warming on forest growth can be accounted for based on results from a process-based model called BIOMASS. BIOMASS was developed by McMurtrie et. al (1990)<ref name="BIOMASS_ref">{{:Bibliography:McMurtrie1990_BIOMASS}}</ref> and has been modified and validated for Swedish conditions in a number of studies
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 *Temperature sum
-====Model principal====
+====Main calculation steps====
 #The selected climate scenario has information on relative growth difference (&alpha;, see below) between an unchanged climate and a changed climate. This is called the growht response.
-#At a given year t, Heureka calculate growth from year t to t+5, for an unchanged climate (&Delta;G<sub>empir</sub>).
+#At a given year ''t'', Heureka calculates the growth from year ''t'' to ''t''+5, for an unchanged climate (&Delta;G<sub>empir</sub>).
-#Calculate G<sub>clim</sub> = The expected growth when there is a climate change is &alpha; &middot; &Delta;G<sub>empir</sub>
+#Calculate G<sub>clim</sub> = &alpha; &middot; &Delta;G<sub>empir</sub> = The expected growth when there is a climate change.
 #A new growth calculation is done, with climate-adjusted values for site index and vegetation index (see below)
-#Depending on [[ControlTable_Climate_Model#Apply Age Adjustment| whether tree ages]] should be adjusted or not (see control table [[ControlTable_Climate_Model#Apply Age Adjustment|Climate Model]], one of the following is applied<t>:</tt>
+#Depending on [[ControlTable_Climate_Model#Apply Age Adjustment| whether tree ages]] should be adjusted or not (see control table [[ControlTable_Climate_Model#Apply Age Adjustment|Climate Model]], one of the following is applied:
-**[[ControlTable_Climate_Model#Apply Age Adjustment|Age adjustment]]<tt>:</tt>
+#;[[ControlTable_Climate_Model#Apply Age Adjustment|Age adjustment]] should be made: By using binary search, all tree ages are adjusted with a certain factor c, until the obtained growth equals G<sub>clim</sub> (within a certain tolerance).
-By using binary search, all tree ages are adjusted with a certain factor c, until the obtained growth equals G<sub>clim</sub> (within a certain tolerance).
+#;If no age adjustment should be made: The growth projection length is extended (or shortened if the climate model predicts decreased growth due to drought) until the expected growth is obtained. Non-linear interpolation is used to handle that this will unlikely coincide with an exact five-year interval. All tree attributes in at time ''t''+5 (diameter, height etc) except tree ages are set to the values obtained in the extended (or shortened period).
 ==Calculation of growth response (changed growth due to climate change)==