ESMF Regridding Software in NCL

ESMF Executive BoardInteragency Working Group Meeting

June 12, 2014

Mary Haley NCAR/CISL/VETS

Special thanks to NOAA/CIRES teamRobert Oehmke, Cecelia DeLuca, Peggy Li

NCAR Command Language

An open source scripting language developed and

supported at NCAR, tailored for the analysis and

visualization of geoscientific data

http://www.ncl.ucar.edu

NCL’s main features

• Simple, robust file input and output

• Hundreds of analysis (computational)

functions

• Visualizations are publication quality

and highly customizable

• Free and well-supported

• Training available

ecosystem modelelectric powerextreme weather eventsfire weather forecastingfish climateflight experimentsfluid dynamicsfog forecastforest productivityfusion plasmageophysics supportglacial climate studiesgreenhouse modelingheat balanceheavy rainfallhistorical weather mapshumidity projectionshurricaneshydrology modelingimprovement of dairy cattleinsect researchionospheric studieslake effect snow stormslarval transportlightning researchmagnetic resonance imagingmagnetohydrodynamicsmapping epidemiological datamarine studiesmartian climatematerial stress and strainmercury depositsmeso-gamma simulationsmicrobiologymicroburst outflows

modeling of stem cellsmolecular physicsmonsoon studiesmorphodynamics, long termneuron modelnoble gas samplingocean biologyocean eddy researchoceanographyoptical data, display ofozonepaleoclimate studiesparticle orbitphysicsplanetary exploration dataplasma simulationpolar researchradiation risk researchradiowave propagationreal-time ocean forecastingremote sensingrenewable energyrice productionroad weather researchsatellite image processingscattometer studiessea breeze simulationsea ice studiessediment transport researchships in waves simulationssnake bites in Brazilsnow data assimilationsoaring conditions for gliderssocial sciencessoil moisture

solar irrigation changespace geodesyspace weatherspread of farming & milk drinkingstar modelingstation data plotsstorm surge analysisstorms, forecasting ofsurf chartsteachingtokamak modelingtornado climatologytransport of aerosols from oil facilitiestropopsheric air pollutionturbulent particle-laden flowtyphoon researchurban flood demonstrationurban meteorologyvolcanic signals in ice coreswater resources and irrigationwater vapor feedbackweather displayweather forecasting for sailboatsweather modificationwildfire simulationwildlife conservation and restoration programwind energywind erosionwind forecasting for wind surferswind resources

DTV propagation analysisIPCC researchMARS camNASA precipitation missionsair quality researchair scienceair ventilation assessmentair-sea interactionaircraft icing researchanimal disease modelingapplied insuranceastronomyatmospheric researchatmospheric teleconnectionsatomic energyaviation forecastingbattlespace environment modelingbauxite refinerybeam physicsbiofuels modelingbiogeochemistrybird migrationblack holebluetongue transmission riskborehole temperaturesbushfire mitigationcarbon cycle modellingcell motilityclimates of extrasolar planetscloud parameterizationdimethylsulphoniopropionatedisaster preventiondrought predictingdustearth magnetic field

Types of research reported by NCL userss

NCL users are worldwide

• Graduate students in climate sciences

• Scientists at research centers and labs

• Some commercial usage

NCL metrics• 19,500 registered users in over 100

countries since 2010

• 1,500 monthly downloads

• 2,019 email list subscribers

• 270 monthly emails (includes responses)

• 70 workshops since 2000 (1,030 students)

Joint student project at NCAR/CISL with NOAA/CIRES

Develop a suite of functions to incorporate the ESMF regridding capabilities in NCL.

Very successful project!Released in NCL beta version in May 2012,

and officially in October 2012

Mohammad AboualiSIParCS Intern at CISL/NCAR, 2011

Computational Science Ph.D. Student

at Joint Program between SDSU & CGU

Why ESMF regridding?

• One interface to handle different grid types

(rectilinear, curvilinear, unstructured)

• Easy to switch interpolation methods

• Works on global or regional grids

• Can use weights for faster regridding

• Can run in parallel

• Know the team members

Uses for ESMF regridding• CMIP5 regridding suite• WRF (weather and research forecast) model data to other grids• Spatially merging Daymet NetCDF files• ECMWF Operational Model Analysis grid• Ocean models (ROMS, POP, ORCA)• Unstructured grids (MPAS, HOMME, ICON) (hexagonal, cubed)• CLM (land surface model)• HDF satellite (swath) data• CCSM grid to EASE grid• GPCP (Global Precipitation Climatology Project)• CCSM ice to CCSM atmospheric• HIRLAM (hydrostatic grid-point model, can be rotated)• MOZART emissions

NCL/ESMF Regriddinghttp://www.ncl.ucar.edu/Applications/ESMF.shtml

Questions?

Mary Haley

haley@ucar.edu