CAS People

John Fasullo, Project Scientist III


Dr. J.T. Fasullo is a member of the Climate Analysis and Paleo and Polar Climate Sections at NCAR and a Research Associate in the ATOC Department at the University of Colorado. He is involved in societally-impactful research aimed at understanding climate variability and change, and community activities such as the Climate Data Guide and Climate Variability Diagnostics Package. He obtained his B.S. in App/Eng Physics from Cornell University and his Ph.D. from the University of Colorado .

CMAT Version 1 output is now publicly available:
CMAT is an objective model assessment software tool that compares robust metrics of simulated climate to state of the art observations (e.g. ERA5, CERES EBAF4.1) during the satellite era in order to assess model fidelity. Its metrics are “robust” in that they exhibit internal variability that is small generally compared to the range of model structural uncertainty. CMAT graphical output and analysis data is freely available for various historical climate model simulations including those in CMIP6. CMAT output archives will be expanded to include previous CMIP ensembles, large ensembles, and CMIP6 simulations, as new simulation output becomes available. Presently available archives: CMAT Version 1: CMIP6.
Highlighted Publications (javascript required)

Uncovering the Pattern of Forced Sea Level Rise in the Satellite Altimeter Record
2018 Continues Record Global Ocean Warming
Altimeter-Era Emergence of the Patterns of Forced Sea Level Rise in Climate Models and Implications for the Future
Observations of the Rate and Acceleration of Sea Level Change
Persistent Polar Ocean Warming in a Strategically Geoengineered Climate.
Unprecedented 2013–2016 Caribbean drought intensified by climate change.
Hurricane Harvey links to ocean heat content and climate change adaptation
ENSO's Changing Influence on Temperature, Precipitation, and Wildfire In a Warming Climate
Climate-change–driven accelerated sea-level rise detected in the altimeter era
Is detection of accelerated sea level rise imminent?
The Amplifying Influence of Increased Ocean Stratification on A Future Year Without A Summer.
Improved estimates of ocean heat content from 1960 to 2015
Attribution of climate extreme events
Seasonal aspects of the recent pause in surface warming
An apparent hiatus in global warming?
Australia's unique influence on global sea level in 2010-2011
A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change
Externally Forced and Internally Generated Decadal Climate Variability Associated with the Interdecadal Pacific Oscillation
A Less Cloudy Future: The role of subtropical subsidence in climate sensitivity
Model-based evidence of deep-ocean heat uptake during surface-temperature hiatus periods

Other Recent Publications

Quantifying human contributions to past and future ocean warming and thermosteric sea level rise Env. Res. Lett.

Evolution of Heat Content Related to ENSO, J. Clim.

Observation-based estimate of global and basin ocean meridional heat transport time series, J. Clim.

CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) Project, Bull. Amer. Met. Soc.

Applications of an updated atmospheric energetics formulation, J. Clim.

Sea Level Rise, McGraw-Hill Encyclopedia of Science and Technology.

Importance of the Resolution of Surface Topography in Indian Monsoon Simulation, J. Clim..

Climate Variability, Volcanic Forcing, and Last Millennium Hydroclimate Extremes, J. Clim..

The Maunder minimum and the Little Ice Age: an update from recent reconstructions and climate simulations, J. Space Weather Space Clim.

On the Relationship between Regional Ocean Heat Content and Sea Surface Height, J. Clim..

Taking the pulse of the planet, EOS.

The Global Monsoon across Time Scales: Mechanisms and outstanding issues, Earth Science Reviews

Atlantic meridional heat transports computed from balancing Earth’s energy locally, Geo.Phys. Res. Lett.

Forced Changes to 20th Century ENSO Diversity in a Last Millennium Context, Climate Dynamics

Considering Eruption Season to Reconcile Model and Proxy Responses to Tropical Volcanism, Proc. Nat. Acad. Sci.,

Interannual Variability in Global Mean Sea Level Estimated from the CESM Large and Last Millennium Ensembles , Water.

Insights into Earth’s energy imbalance from multiple sources. J. Climate

Are GRACE-Era Terrestrial Water Trends Driven By Anthropogenic Climate Change? Advances in Meteorology

ENSO-Driven Energy Budget Perturbations in CMIP models, Clim. Dyn.,

'El Nino Like' Hydroclimate Responses to Last Millennium Volcanic Eruptions J. Clim.

Metrics for the Diurnal Cycle of Precipitation: Toward Routine Benchmarks for Climate Models, J. Clim.

Recent Progress in Constraining Climate Sensitivity with Models Current Climate Change Reports

Re-examining the emergent constraint between climate sensitivity and the Southern Hemisphere radiation budget in CMIP models J. Clim.

The Last Millennium Ensemble Project with the Community Earth System Model (CESM): A Resource for Studying Climate Variability and Change since 850, Bull. Amer. Met. Soc.

Other Recent Media and Blog Posts

9-News on ENSO Global climate impacts of a potential volcanic eruption of Mount Agung, Why Are Sea Levels Around Miami Rising So Much Faster Than Other Places?,Does NASA Data Show That Global Warming Isn’t Causing a Sea Level Rise?, Is detection of accelerated sea level rise imminent? 1991 Mt. Pinatubo volcanic eruption behind depressing global sea levels for two decades, Daily Camera: Earth's Length of Day is Increasing , Colorado Public Radio: Earth's Length of Day is Increasing

Community Activities

The Climate Data Guide
The Climate Variability and Diagnostics Package
Contributor, Intergovernmental Panel on Climate Change (IPCC AR4), Scientific Assessment of Climate Change, WMO/UNEP, 2007
Contributing Author, Intergovernmental Panel on Climate Change (IPCC AR5), Scientific Assessment of Climate Change, WMO/UNEP, 2013

CGD People

John Fasullo, Project Scientist