Added SSP2-EcBudg400

[laurinks]

Purpose of this PR

Add an overshoot scenario to the default REMIND scenarios. The suggested scenario is based on the LOS scenario in ScenarioMIP. However, overshoot scenarios are present in many projects (e.g. RESCUE, OptimESM, ScenarioMIP), and as discussed with Lavinia, it makes sense to have such a scenario among the default REMIND scenarios. Main features:

• Broader portfolio of CDR technologies (incl. EW and OAE (using pessimistic assumptions as in RESCUE and ScenarioMIP))
• End-of-century CO2 budget together with exponentially increasing CO2 prices lead to delayed climate policy ambition and very high CO2 prices towards the end of century.

Type of change

• New default REMIND scenario

Checklist:

• My code follows the coding etiquette
• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• I checked that the in-code documentation is up-to-date
• I adjusted the reporting in remind2 where it was needed
• I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
• All automated model tests pass (FAIL 0 in the output of make test)
• The changelog CHANGELOG.md has been updated correctly

Further information (optional):

Illustration of CO2 price trajectory based on ScenarioMIP runs from beginning of September (see red curve):

Illustration of broader CDR portfolio based on ScenarioMIP runs from beginning of September:


Plot shows Emi|CO2|CDR (Mt CO2/yr) and its components

[laurinks]

File comparison: /p/projects/rd3mod/github/repos/remindmodel/remind/develop/config/scenario_config.csv -> ./config/scenario_config.csv
Columns deleted: -
Columns added:   cm_33_OAE_eff, cm_33_OAE_scen, cm_33EW, cm_33OAE, cm_co2_tax_spread, cm_frac_NetNegEmi
Renamed columns: -
Renamed rows:    -

Changes in the scenarios:
+ SSP2-EcBudg400 was added.

$allwarnings
NULL

[laurinks]

Addition of cm_33_OAE_eff and cm_OAE_scen was necessary because projects using OAE (RESCUE and ScenarioMIP) do not use the default assumptions. I will follow-up with Carbon Management team if the default should be adapted.