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North American Multi-Model Ensemble

The North American Multi-Model Ensemble (NMME) is a multi-model, seasonal forecasting system consisting of coupled models from North American modeling centers. This data contains global, 12-month forecasts of 13 key variables.

NMME CCSM4 Daily Maximum Temperature

The NMME contributors are NOAA's National Centers for Environmental Prediction (NCEP), NOAA's Geophysical Fluid Dynamics Laboratory (GFDL), the National Center for Atmospheric Research (NCAR), NASA's Goddard Space Flight Center (GSFC), and Canada’s Centre for Climate Modeling and Analysis (CCCma). The models include The Community Climate System Model version 4 (CCSM4), the Climate Forecast Model version 2 (CFSv2-2011), the Canadian Coupled Climate Model versions 3 and 4 (CanCM3, CanCM4), the Global Environmental Multiscale/Nucleus for European Modeling of the Ocean (GEM/NEMO), and the Goddard Earth Observing System Model version 5 (GEOS-5).

NMME data is daily or 6-hourly with a 1º by 1º spatial resolution. Most NMME datasets have 10 realizations for each variable. Variables include the following; by model and variable name ("N/A" denotes variables that are not available).

Variable	CCSM4	CESM1	CFSV2-2011	CanCM3	CanCM4	FLORB-01	GEOS-5
Precipitation rate	pr	precip	pr	prlr	prlr	pr	pr
Daily Maximum Surface Air Temperature	TREFMXAV	Tasmax	tasmax	tasmax	tasmax	tasmax	tasmax
Daily Minimum Surface Air Temperature	TREFMNAV	Tasmin	tasmin	tasmin	tasmin	tasmin	tasmin
Zonal surface stress	STX	Stx	stx	stx	stx	N/A	stx
Meridional surface stress	STY	Sty	sty	sty	sty	N/A	sty
Sea level pressure	PSL	Psl	psl	psl	psl	N/A	psl
Zonal wind (@850 hPa)	ua	ua	ua	ua	ua	N/A	ua
Meridional wind (@850 hPa)	va	va	va	va	va	N/A	va
Zonal wind (@200 hPa)	ua	ua	ua	ua	ua	N/A	ua
Meridional wind (@200 hPa)	va	va	va	va	va	N/A	va
Net longwave flux at top of model	N/A	Rlt	N/A	rlt	rlt	N/A	rlt
Net solar flux at surface	N/A	Rss	N/A	rss	rss	N/A	N/A
Geopotential height (@500 hPa)	g	G	g	g	g	N/A	g
Specific Humidity	HUS	hus	hus	hus	hus	N/A	hus

Product Types

Note: As of March 2018, data for CFSv2 and CCSM4 are accessible through the access links below. The other model data sets will be accessible once they arrive in the NCEI archive.

NMME

Model	Grid/Scale	Period of Record	Model Cycle	Output Timestep	Data Access Links
CCSM4	Global, 1º	01Jan2011 - Present	1/day	Daily	HTTPS TDS ERDDAP
CFSV2-2011	Global, 1º	01Jan2011 - Present	1/day	6-hourly	HTTPS TDS ERDDAP
CanCM3	Global, 1º	01Jan2011 - Present	1/day	Daily	HTTPS TDS
CanCM4	Global, 1º	01Jan2011 - Present	1/day	Daily	HTTPS TDS
GEOS-5	Global, 1º	01Jan2011 - Present	1/day	Daily	HTTPS TDS
GEM/NEMO	Global, 1º	01Nov2019 - Present	1/day	Daily	HTTPS TDS