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Climate Feedbacks in CCSM3 under Changing CO2 Forcing. Part II: Variation of Climate Feedbacks and Sensitivity with Forcing

Creator:: Jonko, Alexandra K., Shell, Karen M., Sanderson, Benjamin M., and Danabasoglu, Gokhan
Abstract:: Are equilibrium climate sensitivity and the associated radiative feedbacks a constant property of the climate system, or do they change with forcing magnitude and base climate? Using the radiative kernel technique, feedbacks and climate sensitivity are evaluated in a fully coupled general circulation model (GCM) for three successive doublings of...
Resource Type:: Article
Full Text:: Changing CO2 Forcing. Part II: Variation of Climate Feedbacks and Sensitivity with Forcing ALEXANDRA K

Climate Feedbacks in CCSM3 under Changing CO₂ Forcing. Part I: Adapting the Linear Radiative Kernel Technique to Feedback Calculations for a Broad Range of Forcings

Creator:: Jonko, Alexandra K., Shell, Karen M., Sanderson, Benjamin M., and Danabasoglu, Gokhan
Abstract:: Climate feedbacks vary strongly among climate models and continue to represent a major source of uncertainty in estimates of the response of climate to anthropogenic forcings. One method to evaluate feedbacks in global climate models is the radiative kernel technique, which is well suited for model intercomparison studies because of...
Resource Type:: Article
Full Text:: calculated with the 83CO2 kernel. The sensitivity of feedbacks to forcing magnitude is examined in detail in

Investigating climate feedbacks across forcing magnitudes and time scales using the radiative kernel technique

Creator:: Jonko, Alexandra
Abstract:: Radiative feedbacks associated with changes in water vapor, temperature, surface albedo and clouds remain a major source of uncertainty in our understanding of climate's response to anthropogenic forcing. In this dissertation climate model data is used to investigate variations in feedbacks that result from changing CO₂ forcing and the time...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2. CLIMATE FEEDBACKS IN CCSM3 UNDER CHANGING CO2 FORCING. PART I: ADAPTING THE LINEAR RADIATIVE

Analyzing large paleoclimate datasets : implications for past and future climate change

Creator:: Shakun, Jeremy D.
Abstract:: This dissertation presents the results of statistical analyses of large climate datasets from two time intervals – the 20th century instrumental record and the proxy record of the last deglaciation – in order to understand the forcings and mechanisms of past climate variability. A longstanding question in climate dynamics concerns...
Resource Type:: Dissertation
Full Text:: understand the forcings and mechanisms of past climate variability. A longstanding question in climate

The Evolution of Climate Sensitivity and Climate Feedbacks in the Community Atmosphere Model

Creator:: Gettelman, A., Kay, J. E., and Shell, K. M.
Abstract:: The major evolution of the National Center for Atmospheric Research Community Atmosphere Model (CAM) is used to diagnose climate feedbacks, understand how climate feedbacks change with different physical parameterizations, and identify the processes and regions that determine climate sensitivity. In the evolution of CAM from version 4 to version 5,...
Resource Type:: Article
Full Text:: feedbacks in a suite of models using radiative kernels. We aim to document the climate sensitivity and

Comparison of radiative feedback variability over multiple time scales in climate model and reanalysis data

Creator:: Dalton, Meghan M.
Abstract:: In a steady state, the Earth's absorbed solar radiation (ASR) balances the outgoing longwave radiation (OLR) at the top of the atmosphere (TOA). In response to a radiative forcing, that is, an external perturbation to the top of the atmosphere energy balance, the Earth's climate system adjusts until reaching a...
Resource Type:: Masters Thesis
Full Text:: , which is the increase in temperature due to a radiative forcing and has units of K/Wm−2. 2.2 Climate

Potential Feedbacks Between Pacific Ocean Ecosystems and Interdecadal Climate Variations

Creator:: Miller, Arthur J., Alexander, Michael A., Boer, George J., Chai, Fei, Denman, Ken, Erickson, David J., III, Frouin, Robert, Gabric, Albert J., Laws, Edward A., Lewis, Marlon R., Liu, Zhengyu, Murtugudde, Ragu, Nakamoto, Shoichiro, Neilson, Douglas J., Norris, Joel R., Ohlmann, J. Carter, Perry, R. Ian, Schneider, Niklas, Shell, Karen M., and Timmermann, Axel
Abstract:: No abstract available
Resource Type:: Article
Full Text:: in time. Biological processes are not part of the internal system of current global coupled climate

Climate Sensitivity of the Community Climate System Model, Version 4

Creator:: Bitz, C. M., Shell, K. M., Gent, P. R., Bailey, D. A., Danabasoglu, G., Armour, K. C., Holland, M. M., and Kiehl, J. T.
Abstract:: Equilibrium climate sensitivity of the Community Climate System Model, version 4 (CCSM4) is 3.20 degrees C for 1 degrees horizontal resolution in each component. This is about a half degree Celsius higher than in the previous version (CCSM3). The transient climate sensitivity of CCSM4 at 1 degrees resolution is 1.72...
Resource Type:: Article
Full Text:: Table 2. a. Climate sensitivity and feedback analysis of CCSM3 versus CCSM4 We now present a more

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

Creator:: Buizert, Christo, Gkinis, Vasileios, Severinghaus, Jeffrey P., He, Feng, Lecavalier, Benoit S., Kindler, Philippe, Leuenberger, Markus, Carlson, Anders E., Vinther, Bo, Masson-Delmotte, Valerie, White, James W. C., Liu, Zhengyu, Otto-Bliesner, Bette, and Brook, Edward J.
Abstract:: Greenland ice core water isotopic composition (δ¹⁸O) provides detailed evidence for abrupt climate changes, but is by itself insufficient for quantitative reconstruction of past temperatures and their spatial patterns. We investigate Greenland temperature evolution during the last deglaciation using independent reconstructions from three ice cores and simulations with a coupled...
Resource Type:: Article
Full Text:: climate sensitivity to changes in radiative forcing (2). Much of the regional and global climate

Modeling Forest Response to Changing Climate Conditions in Western North America

Creator:: Hawkins, Linnia R.
Abstract:: Forests play an integral role in the global carbon cycle, regulating the atmospheric CO₂ concentration by sequestering nearly one third of anthropogenic carbon emissions and storing carbon for centuries. Forest ecosystems are integrated into the culture, ecology, and economy of western North America, supporting wildlife habitat, local economies, recreation, and...
Resource Type:: Dissertation
Full Text:: considerably to uncertainty in vegetation transition and carbon cycle feedbacks under non-stationary climate

ScholarsArchive@OSU

Climate Feedbacks in CCSM3 under Changing CO2 Forcing. Part II: Variation of Climate Feedbacks and Sensitivity with Forcing

Climate Feedbacks in CCSM3 under Changing CO₂ Forcing. Part I: Adapting the Linear Radiative Kernel Technique to Feedback Calculations for a Broad Range of Forcings

Investigating climate feedbacks across forcing magnitudes and time scales using the radiative kernel technique

Analyzing large paleoclimate datasets : implications for past and future climate change

The Evolution of Climate Sensitivity and Climate Feedbacks in the Community Atmosphere Model

Comparison of radiative feedback variability over multiple time scales in climate model and reanalysis data

Potential Feedbacks Between Pacific Ocean Ecosystems and Interdecadal Climate Variations

Climate Sensitivity of the Community Climate System Model, Version 4

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

Modeling Forest Response to Changing Climate Conditions in Western North America

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