CESM iTraCE (key atmospheric variables from core experiment)

[shauneaves]

Contact Details

[email protected]

Dataset description

Description:
The CESM iTraCE project is a set of published simulations to understand the long-term, millennial-scale, deglacial climate evolution from 20 kyr ago to 11 kyr ago. The core experiment includes the evolving orbital conditions, ice sheets, greenhouse gases, and meltwater. The other experiments adopt a factorized forcing scheme to allow isolating each of these forcings separately. These experiments extend the publicly available TraCE simulations, available on the CDG and downloaded by the research community, using the higher resolution iCESM1.2 model that includes predictive simulation of water isotopes in the atmosphere-ocean-land-runoff-sea ice system. All simulations are performed with the atmosphere-ocean-land-sea ice coupled CESM1.2 at the nominal 2-degree latitude/longitude for the atmosphere and land models, and 1-degree for the ocean and sea ice models. The simulations contain climate stable water isotope output from all model components, plus carbon, neodymium, protactinium, and thorium isotopes in the ocean model output.

Citation:
Bette Otto-Bliesner, E. B., R. Tomas, Z. Liu, and C. He. 2024. iTraCE. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.26024/b290-an76. Accessed† dd mmm yyyy.

Source:
https://rda.ucar.edu/datasets/d651022/#

Individual nc download links of key variables (temperature, precipitation, wind, surface pressure) given below.

Data are broken into 8x 1000-year chunks for download, but should be combined to single time series for GEE.

Precipitation components (PRECC and PRECL) could be summed to give total precipitation (PRECT) or left as is. Wind field (U,V) are large as they contain multiple levels in the atmosphere, but this is useful for looking at the structure of atmospheric circulation.

TREFHT (2m air temperature)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.TREFHT.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.TREFHT.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.TREFHT.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.TREFHT.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.TREFHT.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.TREFHT.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.TREFHT.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/TREFHT/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.TREFHT.800001-899912.nc

PRECC (Convective precipitation)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECC.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PRECC.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECC.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECC.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PRECC.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PRECC.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECC.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.PRECC.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECC/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.PRECC.800001-899912.nc

PRECL (Large-scale (or stratiform) precipitation)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECL.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PRECL.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECL.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECL.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PRECL.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PRECL.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.PRECL.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PRECL/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.PRECL.800001-899912.nc

PS (Surface pressure)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PS.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PS.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PS.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PS.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.PS.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.PS.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.PS.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/PS/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.PS.800001-899912.nc

U (Zonal wind component)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.U.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.U.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.U.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.U.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.U.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.U.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.U.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/U/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.U.800001-899912.nc

V (Meridional wind component)
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.20ka.itrace.ice_ghg_orb_wtr.01.cam.h0.V.100001-199912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.18ka.itrace.ice_ghg_orb_wtr.03.cam.h0.V.200001-299912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.17ka.itrace.ice_ghg_orb_wtr.01.cam.h0.V.300001-399912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.16ka.itrace.ice_ghg_orb_wtr.01.cam.h0.V.400001-499912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.15ka.itrace.ice_ghg_orb_wtr.03.cam.h0.V.500001-599912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.14ka.itrace.ice_ghg_orb_wtr.01.cam.h0.V.600001-699912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.13ka.itrace.ice_ghg_orb_wtr.02.cam.h0.V.700001-799912.nc
https://data.rda.ucar.edu/d651022/atm/proc/tseries/month_1/V/b.e13.Bi1850C5.f19_g16.12ka.itrace.ice_ghg_orb_wtr.05.cam.h0.V.800001-899912.nc

Earth Engine Snippet if dataset already in GEE

for example

var asset_name = ee.ImageCollection("path to your collection")

Sample Code: Add a sample code maybe just adding your datasets in the code editor

Enter license information

Creative Commons Attribution 4.0 International License.

Keywords

climate model, paleoclimate, atmosphere, iCESM, iTraCE

Code of Conduct

• I agree to follow this project's Code of Conduct