CESM1 Paleo Idealized Forcing
d651052
Among other forcings, past climate variations have been driven by changes in the orbit of earth and greenhouse gas concentrations. These forcings often change concurrently, making it difficult to isolate specific climate responses from the paleoclimate record alone. Here, simulations are run with the NCAR CESM1.2 to isolate the climate responses to different past forcings. In each simulation, only one boundary condition is changed while others remain fixed at preindustrial levels, with the goal of isolating the climate response to individual forcings. The experiments are described below. In each simulation, parameters not mentioned are the same as the preindustrial simulation. Simulations: * 0ka_0urb: A preindustrial simulation, with the following parameters: Obliquity: 23.44107 degrees; Longitude of perihelion: 102.7242 degrees; eccentricity: 0.01670772; CO2: 284.7 ppm; Ice sheets: 0 ka. * lo_obliq and hi_obliq: Obliquity is set to 22.079 or 24.480 degrees, respectively. * 0_AEQ, 90_WSOL, 180_VEQ, and 270_SSOL: Longitude of the perihelion is set to 0, 90, 180, or 270 degrees. This corresponds to perihelion at the Northern Hemisphere autumnal equinox, winter solstice, vernal equinox, or summer solstice, respectively. Eccentricity is set to 0.0493. * ECC_0: Eccentricity is set to 0, resulting in a perfectly circular orbit. * half_CO2: CO2 is set to 142.35 ppm, half of its preindustrial level. If you are planning on using these simulations please contact the lead authors of the two reference papers shown below. Computing resources (ark:/85065/d7wd3xhc) were provided by the Climate Simulation Laboratory at NCAR's Computational and Information Systems Laboratory, sponsored by the National Science Foundation and other agencies.
dataset
https://rda.ucar.edu/datasets/d651052/
protocol: https
applicationProfile: browser
name: Dataset Description
description: Related Link
function: information
https://rda.ucar.edu/datasets/d651052/dataaccess/
protocol: https
applicationProfile: browser
name: Data Access
description: Related Link
function: download
climatologyMeteorologyAtmosphere
dataset
revision
2014-10-16
CESM > NCAR Community Earth System Model
revision
2025-05-01
EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > PRECIPITATION PROFILES > LATENT HEAT FLUX
EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION > RAIN
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > SPECIFIC HUMIDITY
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > UPPER AIR TEMPERATURE
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > U/V WIND COMPONENTS
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > VERTICAL WIND VELOCITY/SPEED
revision
2025-04-25
publication
2025-05-22
notPlanned
Creative Commons Attribution 4.0 International License
None
UCAR/NCAR - Research Data Archive
National Center for Atmospheric Research
CISL/DECS
P.O. Box 3000
Boulder
80307
U.S.A.
1726
303-497-1291
pointOfContact
NCAR Research Data Archive
National Center for Atmospheric Research
CISL/DECS
P.O. Box 3000
Boulder
80307
U.S.A.
303-497-1291
name: NCAR Research Data Archive
description: The Research Data Archive (RDA), managed by the Data Engineering and Curation Section (DECS) of the Computational and Information Systems Laboratory (CISL) at NCAR, contains a large and diverse collection of meteorological and oceanographic observations, operational and reanalysis model outputs, and remote sensing datasets to support atmospheric and geosciences research, along with ancillary datasets, such as topography/bathymetry, vegetation, and land use.
function: downlaod
pointOfContact
2025-05-22T23:05:02Z