Categories - Climate Change
Sub Categories
- Integrated Assessment and Climate Policy - 21 projects
- Earth and Climate Modeling - 60 projects
- Climate Data Access and Visualization - 48 projects
- Climate Data Standards - 13 projects
- Climate Data Processing and Analysis - 69 projects
- Natural Hazard and Storm - 53 projects
- Climate Downscaling - 13 projects
Topics
flood, cmip6, xclim, integrated-assessment, e3sm, esgf, cmip, inundation, tropical-cyclone, climate-data-analysis, hazard, integrated-assessment-model, chirps, cesm, hazard-assessment, climate-forecasting, national-water-center, s2s, floods, neuralgcm, climate-indices, cf-conventions, icclim, coupled-human-natural-systems, gcam, cmip5, esmf, meteorologia, climate-stations, kml, national-climate-database, zealand, agricultura, ncar, human-earth-system, imerg, esi, emodis, disaster, climateserv, climate-datasets, hurricane, cdat, bom, climate-research, climate-sciences, pcmdi, world3, xcdat, china, h5py, australia-bureau-of-meteorology, pca, med-team, gcam-china, large-language-models, climate-services, climate-assessments, ai-for-climate, spaceweather, clm, ecosystem, eof-analysis, iris, gdas, gefs, jedi, ugrid, unstructured-grids, compressed, ndimensional-arrays, dimensionality-reduction, linear-scaling, scenario-data, timeseries-format, cmip6-data, xgcm, debrisflow, landslide, fluorescence, sif, soil-plant-atmosphere, scicomm, sea-ice-thickness, cds, ecmwf-services, daily-data, daily-weather, global-data, gsod, historical-weather, ncdc, ncei, weather-information, oceanic-nino, s2d, cesm-lens, data-catalog, climate-impacts, gdpcir, contingency-table, forecast-evaluation, model-validation, xarray-accessor, archiving, earthkit, gpm-imerg, mtclim, ornl-daac, hector-model, hut23-1077, cfunits, netcdf-files, multiple-threads, strategic-planning, demographics, colombia, matlab-toolbox, ropenspain, anuclim, return-period, kostra, intensity-duration-frequency, cf, heavy-rain, dwa-a-531, dwa, duration-steps, duration, design-rainfall, norwegian, noresm, netcdf-library, cfdm, netcdf-fortran, metop, lac, gac, avhrr, inasafe, disasterresponse, catastrophe-modelling, parameters, ecco, warming-stripes, insurance, loss, reinsurance, vulnerability, sea-levels, carbon-dioxide-data, pp, forecast-api, aemet, um, psha, unidata-netcdf, fms, openquake-engine, openquake, gfdl, cluster, national-water-model, catastrophe-model, hand, tiros, radiometric, detrended-quantile-mapping, delta-method, delta-change-method, cdf, bias-adjustment, tensorflow2, sckit-learn, ensemble-machine-learning, geoinformatics, logon, weather-conditions, tropical-cyclone-variability, potential-intensity, hurricanes, hurricane-calculations, climate-change-atlas, lithology, coupled, rstats-package, nuopc, model-coupling, esmx, earth-system-modelling, earth-system-modeling-framework, cansips, cangrd, ahccd, climate-simulations, climate-indicators, calculation-climate, variance-scaling, quantile-mapping, quantile-delta-mapping, flood-risk-models, pollen-measurements, phenology-data, ogd, lisvap, lisflood, glofas, efas, storms, performance-diagram, mrms, hail, cloud-optimized, servirglobal, servir, ndvi, gridded-climate-data, aoi, smap, tropical-storms, cyclones-behaviour, rating-curve, hec-ras, floodplain, predictive-analytics, multimodel-ensemble, mpi4py, projection, conflict, near-real-time, warming-levels, ipcc-regions, climate4r, landscape-evolution-model, erosion-process, compaction, basin-modeling, climate-policy, urban-climate-model, kokkos, cxx, magicc-model, disaster-risk-management, tsunami, surge, storm, adaptive, flood-monitoring, frost, macro-energy, integrated-assessment-scenarios, iamc-format, hadcrut5, transcription, digitization, data-rescue, archives, regrid, netcdf-operators, nco, hdf, gsl, sedimentation, sediment-transport, paleogeography, paleoclimate, elevation, diurnal-temperature, cru-cl2, cru, prepare, cmor3, tropical, cyclones, adcirc, ogc, indices, model-diagnostics, cyclone, roms, regional, regcm, dem, mpas-analysis, mpas, hector, satellite-imagery-analysis, landsat-data, geodata, sr15, pathway-analysis, apache-beam, ohio-state-university, oceans, fever, byrd, flood-inundation-maps, solar-radiation, relative-humidity,
Projects
Contributors
Stefan Weissenberger [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
climate-science, weather
Antonio Ettorre [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
cluster, earthquakes, hazard, hazard-assessment, openquake, openquake-engine, psha, risk-analysis, risk-assessment, seismic
Eric Prestat [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, diffraction, electron-diffraction, physics, physics-simulation, closember, ipython, ipython-kernel and 41 more
Christoph Gohlke [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
format-reader, imagej, life-sciences-image, ome-tiff, tiff, whole-slide-imaging, zarr, compressed, ndimensional-arrays, gdal and 39 more
Christine Smit [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr
Brett Graham [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, closember, numerical-methods, advanced-scientific-data-format, asdf, data-format, iso-9692-1, opendata and 12 more
Ben Jeffery [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, coalescent, genetics, genomics, msprime, trees, tskit, pydata and 4 more
Marwan Zouinkhi [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr
Justin Swaney [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, dagster, data-engineering, data-integration, data-orchestrator, data-pipelines, etl, mlops and 3 more
Jonny Saunders [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr
Joe Jevnik [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, alignment, flexible, amqp, queue-tasks, queue-workers, queued-jobs, redis-queue and 5 more
Jerome Kelleher [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
compressed, ndimensional-arrays, zarr, coalescent, genetics, genomics, msprime, trees, tskit, bioinformatics and 5 more
Lars [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
font-icons, meteogram, meteorology, pictograma, pictograph, pragmatapro, terminal-based, compressed, ndimensional-arrays, zarr and 9 more
neilSchroeder [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Processing and Analysis
Topics:
Jakub Recman [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Processing and Analysis
Topics:
grib, meteorology
Thomas Lavergne [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
cross-agency, open-code, open-science, closember, kd-tree, resampling, cartopy, notebook, science-research, snippets
Justin Perket [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Joren Hammudoglu [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
adf, arch, df-gls, dickey-fuller, financial-econometrics, model-confidence-set, multiple-comparison-procedures, phillips-perron, reality-check, spa and 14 more
Lennart Ramme [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Leonidas Linardakis [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Manoel Römmer [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Praveen Kumar Pothapakula [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Philipp De-Vrese [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Panagiotis Adamidis [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Nora Schenk [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Nikolas Porz [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Nander Wever [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Michael Haller [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Matthieu Leclair [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Marco Wurth [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Prill Florian [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Raphael Schlarb [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Reinhard Budich [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Roland Potthast [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Sascha Bellaire [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Sergey Danilov [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Shweta Singh [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Stephan Lorenz [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Sven Willner [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Thomas Reddmann [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Tuomas Lunttila [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Ulrich Schaettler [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Ulrike Niemeier [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Xingran Wang [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Yen-Chen Chen [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
[email protected] [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
jonas.straub jonas.straub@localhost
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
stelliom [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Matthew Krupcale [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
cmip6, cmor3, esgf, prepare
Nancy Collins [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
James Seth Goodnight [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
climate, climate-analysis, climate-data, climate-model, climate-model-evaluation, climate-models, climate-science, climate-variability
lee1043 [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
climate, climate-analysis, climate-data, climate-model, climate-model-evaluation, climate-models, climate-science, climate-variability
Silverio Vasquez [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Walter Spector [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Earl Schwab [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Fei Liu [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
mom6, ocean, earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction and 3 more
Joseph Jacob [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Rocky Dunlap [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
babeltrace, esmf, profiling, trace, earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmx, model-coupling and 4 more
Ben Koziol [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Dennis Flanigan [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Samson Cheung [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
AHReedy [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
pkjr002 [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
MAKassien [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Access and Visualization
Topics:
Leonid Zaslavski [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
ceftanveer [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
canada, disaster, flood, flood-risk-models, qgis
Tanveer singh Bhatia [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
canada, disaster, flood, flood-risk-models, qgis
Himanshu Pillai [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Shep Smithline [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Robbie Staufer [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Jussi Leinonen [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
climate-science, weather
Gerhard Theurich [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Brice Womack [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Ryan Schmidt [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
antlr, astronomy, dicom, eigen3, fits-files, geophysics, grib, gsl-library, hdf, hdf5 and 37 more
Robert Oehmke [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Michael Young [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Max Suarez [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Oliver Hennigh [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
convolutional-neural-network, convolutional-neural-networks, deep-neural-networks, deeplearning, distributed, python-framework, python-tensorflow, tensorflow2, tf-module, climate-science and 1 more
gertln [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
climate-science, weather
Alban Farchi [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
Harmen Wierenga [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
earth-system-model, earth-system-modeling, earth-system-modeling-framework, earth-system-modelling, esmf, esmx, model-coupling, numerical-weather-prediction, nuopc, nwp and 1 more
Amidu O. Oloso [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Thomas L. Clune [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Purnendu Chakraborty [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Leonidas Linardakis [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Florian Prill [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Daniel Reinert [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
G��nther Z��ngl [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Stephan Lorenz [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Marco Giorgetta [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Reiner Schnur [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
documentation-generator, documentation-tool, fortran-documenter, fortran-language, static-analysis
Daniel Reinert [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Martin Koehler [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Anurag Dipankar [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Earth and Climate Modeling
Topics:
Kimoon Han [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
Valeria Cascone [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Natural Hazard and Storm
Topics:
cluster, earthquakes, hazard, hazard-assessment, openquake, openquake-engine, psha, risk-analysis, risk-assessment, seismic
Jesse Rusak [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
Jonathan Neuhauser [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Standards
Topics:
will-s-hart [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Processing and Analysis
Topics:
cdat, cf-conventions, climate-analysis, climate-data, climate-data-analysis, climate-research, climate-science, climate-sciences, cmip, cmip6 and 3 more
Maciej Janicki [email protected]
OST Projects: 1
Categories: Climate Change
Sub Categories: Climate Data Access and Visualization
Topics:
ai-for-climate, climate-assessments, climate-data, climate-services, large-language-models