scholarly journals New PMIP challenges: Simulations of deglaciations and abrupt Earth system changes

2021 ◽  
Vol 29 (2) ◽  
pp. 78-79
Keyword(s):  
Earth System ◽  
System Changes

Quaternary earth system changes

1994 ◽  
Vol 13 (4) ◽  
pp. 395-398
Author(s):  
Rhodes W. Fairbridge
Keyword(s):  
Earth System ◽  
System Changes

scholarly journals A crop yield change emulator for use in GCAM and similar models: Persephone v1.0

2018 ◽  
Author(s):  
Abigail Snyder ◽  
Katherine V. Calvin ◽  
Meridel Phillips ◽  
Alex C. Ruane
Keyword(s):  
Crop Yield ◽  
Crop Yields ◽  
Economic Models ◽  
Yield Response ◽  
Response Functions ◽  
Earth System ◽  
Data Set ◽  
Improvement Project ◽  
Crop Models ◽  
System Changes

Abstract. Future changes in Earth system state will impact agricultural yields and, through these changed yields, can have profound impacts on the global economy. Global gridded crop models estimate the influence of these Earth system changes on future crop yields, but are often too computationally intensive to dynamically couple into global multi-sector economic models, such as GCAM and other similar-in-scale models. Yet, generalizing a faster site-specific crop model's results to be used globally will introduce inaccuracies, and the question of which model to use is unclear given the wide variation in yield response across crop models. To examine the feedback loop among socioeconomics, Earth system changes, and crop yield changes, rapidly generated yield responses with some quantification of crop response uncertainty are desirable. The Persephone v1.0 response functions presented in this work are based on the Agricultural Model Intercomparison and Improvement Project (AgMIP) Coordinated Climate-Crop Modeling Project (C3MP) sensitivity test data set and are focused on providing GCAM and similar models with a tractable number of rapid to evaluate, dynamic yield response functions corresponding to a range of the yield response sensitivities seen in the C3MP data set. With the Persephone response functions, a new variety of agricultural impact experiments will be open to GCAM and other economic models; for example, examining the economic impacts of a multi-year drought in a key agricultural region and how economic changes in response to the drought can, in turn, impact the drought.

scholarly journals A crop yield change emulator for use in GCAM and similar models: Persephone v1.0

2019 ◽  
Vol 12 (4) ◽  
pp. 1319-1350 ◽  
Author(s):  
Abigail Snyder ◽  
Katherine V. Calvin ◽  
Meridel Phillips ◽  
Alex C. Ruane
Keyword(s):  
Crop Yield ◽  
Economic Models ◽  
Assessment Model ◽  
Yield Response ◽  
Response Functions ◽  
Earth System ◽  
Data Set ◽  
Improvement Project ◽  
Crop Models ◽  
System Changes

Abstract. Future changes in Earth system state will impact agricultural yields and, through these changed yields, can have profound impacts on the global economy. Global gridded crop models estimate the influence of these Earth system changes on future crop yields but are often too computationally intensive to dynamically couple into global multi-sector economic models, such as the Global Change Assessment Model (GCAM) and other similar-in-scale models. Yet, generalizing a faster site-specific crop model's results to be used globally will introduce inaccuracies, and the question of which model to use is unclear given the wide variation in yield response across crop models. To examine the feedback loop among socioeconomics, Earth system changes, and crop yield changes, rapidly generated yield responses with some quantification of crop response uncertainty are desirable. The Persephone v1.0 response functions presented in this work are based on the Agricultural Model Intercomparison and Improvement Project (AgMIP) Coordinated Climate-Crop Modeling Project (C3MP) sensitivity test data set and are focused on providing GCAM and similar models with a tractable number of rapid to evaluate dynamic yield response functions corresponding to a range of the yield response sensitivities seen in the C3MP data set. With the Persephone response functions, a new variety of agricultural impact experiments will be open to GCAM and other economic models: for example, examining the economic impacts of a multi-year drought in a key agricultural region and how economic changes in response to the drought can, in turn, impact the drought.

Introduction to quaternary Earth System changes

1993 ◽  
Vol 7 (1-3) ◽  
pp. VII-IX ◽  
Author(s):  
Hugues Faure ◽  
Liliane Faure-Denard ◽  
Tungsheng Liu
Keyword(s):  
Earth System ◽  
System Changes
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