@article{fdi:010091071, title = {{S}cenario setup and forcing data for impact model evaluation and impact attribution within the third round of the {I}nter-{S}ectoral {I}mpact {M}odel {I}ntercomparison {P}roject ({ISIMIP}3a)}, author = {{F}rieler, {K}. and {V}olkholz, {J}. and {L}ange, {S}. and {S}chewe, {J}. and {M}engel, {M}. and {L}ópez, {M}. {D}. {R}. and {O}tto, {C}. and {R}eyer, {C}. {P}. {O}. and {K}arger, {D}. {N}. and {M}alle, {J}. {T}. and {T}reu, {S}. and {M}enz, {C}. and {B}lanchard, {J}. {L}. and {H}arrison, {C}. {S}. and {P}etrik, {C}. {M}. and {E}ddy, {T}. {D}. and {O}rtega-{C}isneros, {K}. and {N}ovaglio, {C}. and {R}ousseau, {Y}. and {W}atson, {R}. {A}. and {S}tock, {C}. and {L}iu, {X}. and {H}eneghan, {R}. and {T}ittensor, {D}. and {M}aury, {O}livier and {B}üchner, {M}. and {V}ogt, {T}. and {W}ang, {T}. {T}. and {S}un, {F}. {B}. and {S}auer, {I}. {J}. and {K}och, {J}. and {V}anderkelen, {I}. and {J}ägermeyr, {J}. and {M}üller, {C}. and {R}abin, {S}. and {K}lar, {J}. and del {V}alle, {I}. {D}. {V}. and {L}asslop, {G}. and {C}hadburn, {S}. and {B}urke, {E}. and {G}allego-{S}ala, {A}. and {S}mith, {N}. and {C}hang, {J}. {F}. and {H}antson, {S}. and {B}urton, {C}. and {G}ädeke, {A}. and {L}i, {F}. and {G}osling, {S}. {N}. and {S}chmied, {H}. {M}. and {H}attermann, {F}. and {W}ang, {J}. {D}. and {Y}ao, {F}. {F}. and {H}ickler, {T}. and {M}arc{\'e}, {R}. and {P}ierson, {D}. and {T}hiery, {W}. and {M}ercado-{B}ettín, {D}. and {L}adwig, {R}. and {A}yala-{Z}amora, {A}. {I}. and {F}orrest, {M}. and {B}echtold, {M}.}, editor = {}, language = {{ENG}}, abstract = {{T}his paper describes the rationale and the protocol of the first component of the third simulation round of the {I}nter-{S}ectoral {I}mpact {M}odel {I}ntercomparison {P}roject ({ISIMIP}3a, http://www.isimip.org, last access: 2 {N}ovember 2023) and the associated set of climate-related and direct human forcing data ({CRF} and {DHF}, respectively). {T}he observation-based climate-related forcings for the first time include high-resolution observational climate forcings derived by orographic downscaling, monthly to hourly coastal water levels, and wind fields associated with historical tropical cyclones. {T}he {DHF}s include land use patterns, population densities, information about water and agricultural management, and fishing intensities. {T}he {ISIMIP}3a impact model simulations driven by these observation-based climate-related and direct human forcings are designed to test to what degree the impact models can explain observed changes in natural and human systems. {I}n a second set of {ISIMIP}3a experiments the participating impact models are forced by the same {DHF}s but a counterfactual set of atmospheric forcings and coastal water levels where observed trends have been removed. {T}hese experiments are designed to allow for the attribution of observed changes in natural, human, and managed systems to climate change, rising {CH}4 and {CO}2 concentrations, and sea level rise according to the definition of the {W}orking {G}roup {II} contribution to the {IPCC} {AR}6.}, keywords = {}, booktitle = {}, journal = {{G}eoscientific {M}odel {D}evelopment}, volume = {17}, numero = {1}, pages = {1--51}, ISSN = {1991-959{X}}, year = {2024}, DOI = {10.5194/gmd-17-1-2024}, URL = {https://www.documentation.ird.fr/hor/fdi:010091071}, }