Identification

Title

CESM1.2 global simulations with water isotopic tracers and water source tags for 1850 pre-industrial, historical, and RCP8.5 forcing conditions

Alternative title(s)

d916909

Abstract

Understanding sources of atmospheric moisture can help reveal the processes that set patterns of humidity, cloudiness, and precipitation. These patterns ultimately influence weather, water resources, and climate feedbacks. This dataset contains a four-member ensemble of global simulations from the Community Earth System Model (CESM) version 1.2 with both water isotopic tracers and water tags. Each ensemble member consists of an historical period and a future period, forced by the RCP8.5 high emissions scenario. The tags, which are simulated in three branched runs, each 30 years in length, explicitly track moisture from evaporative source regions defined at nominal 10 x 10 degree resolution. They provide an opportunity to evaluate the contributions of distinct source regions to the water vapor, cloud condensate, and precipitation amounts simulated. The isotopic tracers provide a means to map the moisture source information from the tags to observable quantities and link modern-day meteorological processes to climate records of the past.

Resource type

dataset

Resource locator

https://gdex.ucar.edu/datasets/d916909/

protocol: https

name: Dataset Description

description: Related Link

function: information

https://gdex.ucar.edu/datasets/d916909/dataaccess/

protocol: https

name: Data Access

description: Related Link

function: download

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

climatologyMeteorologyAtmosphere

Keywords

Keyword set

keyword value

dataset

originating controlled vocabulary

title

reference date

date type

revision

effective date

2021-03-30

Keyword set

keyword value

CESM > NCAR Community Earth System Model

originating controlled vocabulary

title

reference date

date type

revision

effective date

2026-03-19

Keyword set

keyword value

EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > STABLE ISOTOPES

EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION

originating controlled vocabulary

title

reference date

date type

revision

effective date

2026-03-19

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2026-03-23

Frequency of update

notPlanned

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Creative Commons Attribution 4.0 International License

Limitations on public access

None

Responsible organisations

Responsible party

organisation name

email address

datahelp@ucar.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

NSF NCAR Geoscience Data Exchange

email address

datahelp@ucar.edu

web address

https://gdex.ucar.edu

name: NSF NCAR Geoscience Data Exchange

description: The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research.

function: download

responsible party role

pointOfContact

Metadata date

2026-03-23T14:45:11Z

Metadata language