Categories - Atmosphere

Sub Categories

Topics

aerosol, radiative-transfer-models, hodograph, infrared, stratosphere, troposphere, radiation, skew-t, gempak, wmo, bufr, sounding, deutscher-wetterdienst, geophysical-fluid-dynamics, nsf-access, nsf-unidata, science-gateway, nsf, escience, wind-driven-circulation, velocity-potential, geos5, rttov, aerosol-chambers, aerosol-microphysics, chemical-scheme, indoor-air-quality, jet-stream, iowa, environment-canada, weather-downloader, atmospheric-physics, asos, iowa-environment-mesonet, metar, f2py, lowtran, aerocom, speed, auto-encoder, data-compression, numerical-weather-forecasting, eliassen-model, gill-matsuno-model, inversion-problem, munk-stommel, omega-equation, poisson-equation, pv-inversion, streamfunction, successive-over-relaxation, nvrtc, lagrangian-dynamics, lagrangian-particles, superdropletmodel, superdroplets, superdrops, met-data, foucastnet, gridded, wrf-arw, academia, planetary-atmospheres, plots, visualization-tools, mwx, vaisala, cfgrib, ecmwf-data, grib2, nomads, rap, particle-system, pint, thrust, graph-neural-networks, decision-trees, metview, community-modeling, forecast-model, weather-model, united-states, weatherservice, flight-planning, mission-support-system, aerosols, atmospheric-chemistry-modeling, mercury, particulate-matter, corrections, retrieval, clouds, kpp, ceilometer, goes16, goes17, atmospheric-sciences, imd, cape, cin, convective-parameters, download-sounding, rawinsonde, thunder, tornado, cloudcasting, manchester-prize, turing-ocf, dispersion, dispersion-model, aurora-model, ocean-atmosphere-model, quality-assurance, mit, analogue, arl, cmaq, awips, awips-data, cave, data-server, edex, foss, hibernate, httpd-server, albedo, albedo-maps, imgw, ogimet, ctm, geos-cf, foundation-models, ocean-waves, tropical-cyclone-tracking, weather-prediction, wms, ode-solver, air-quality-model, air-quality-model-evaluation, model-evaluation-metrics, astrophysics, hitemp, hitran, plasma, plasma-physics, dwd-weather, hass, weather-entity, data-structures, airports, trajectories, smhi, process-safety, microwave-remote-sensing, gaw, ozone, ozonesonde, spectral, totalozone, ultraviolet, umkehr, uv, pyart, radar-processing, weather-radars, application, scr-2664, decoding, encoding, odb,

Projects

Contributors

Daisuke Hotta [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics:

Milan K [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: climate-data, data-compression, entropy, information-theory, weather-forecast, 16bit, arithmetic, numbers, numerics, overflow and 1 more

Alistair White [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics:

Simo Tukiainen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Tuomas Siipola [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Anniina Korpinen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Niko Leskinen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Lauri Kangassalo [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Tuomas Siipola [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: typechecker, typing, pep8, ruff, rustpython, static-analysis, static-code-analysis, style-guide

Robert Spirig [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Moritz Lochmann [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Willi Schimmel [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

swr99ejo [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics:

Pete Bachant [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose

xmn [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose

Joonatan Partanen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose

Jørgen Kvalsvik [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose, eclipse, opm, reservoir, segy, seismic, hactoberfestivus, dlis and 3 more

mccannjb [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose

sspagnol [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: speed, wind, windrose

Hans Chen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: wrf, wrf-arw

Florian Sammüller [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: wrf, wrf-arw, gliding-and-soaring, meteorology, weather-forecast, weather, brownian-motion, differential-equations, neural-sde, noise-processes and 4 more

chen-0126 [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: jython, meteorology, air-quality, emission, meteoinfo, toolbox

donkie [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: jython, meteorology

apete [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: jython, meteorology, financial, financial-analysis, financial-data, ojalgo, portfolio, historical-data, stock-market, stock-prices and 4 more

Alex [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: microwave-remote-sensing, radiative-transfer, soil-moisture, vegetation, microwave, sar-satellite-data, scattering-models, vegetation-model

Robert Pincus [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: netcdf4, radiative-transfer

Fubin Zhang [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: arrange, boolean-operations, cgal, computational-geometry, geometry, geometry-processing, mesh-processing, meshes, point-cloud, polygon and 11 more

tmitchell90 [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: meteorology

Patrick Eriksson [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmospheric-science, radiative-transfer

Stefan Buehler [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmospheric-science, radiative-transfer, atmospherice-science

Vasileios Barlakas [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmospheric-science, radiative-transfer

Alex Bobryshev [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmospheric-science, radiative-transfer

Benjamin Hillman [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: climate-model, radiative-transfer, climate-models, correlated-k, radiative-transfer-models

Brad Richardson [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: climate-model, radiative-transfer, caf, coarray, coarray-fortran, communication-library, easier-than-mpi, easy-to-use, gfortran, numerical-calculations and 26 more

Fabian.Jakub [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmosphere-model, atmospheric-modelling, atmospheric-science, large-eddy-simulation, numerical-weather-prediction, radiation, radiative-transfer, radiative-transfer-models

Will Sawyer [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: climate-model, radiative-transfer

Sebastian Schunke [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: earth-observation, radiative-transfer

Nicolas Misk [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: earth-observation, radiative-transfer

HermannTheGreatMaster [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmosphere-model, atmospheric-modelling, atmospheric-science, large-eddy-simulation, numerical-weather-prediction, radiation, radiative-transfer, radiative-transfer-models

felixnegwer [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmosphere-model, atmospheric-modelling, atmospheric-science, large-eddy-simulation, numerical-weather-prediction, radiation, radiative-transfer, radiative-transfer-models

Max.Eckl [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmosphere-model, atmospheric-modelling, atmospheric-science, large-eddy-simulation, numerical-weather-prediction, radiation, radiative-transfer, radiative-transfer-models

Carolin.Klinger [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: atmosphere-model, atmospheric-modelling, atmospheric-science, large-eddy-simulation, numerical-weather-prediction, radiation, radiative-transfer, radiative-transfer-models

Shay Carter [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: awips, awips-data, cave, data-server, edex, foss, gempak, hdf5, hibernate, httpd-server and 7 more

Angelo Delefortrie [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: weather, weather-api, weather-forecast, elevation, gdal, grpc, meteo, open-meteo, delivery-note, invoice and 1 more

Martin Fencl [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

Daniel Clewley [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: radiative-transfer, las, rios

Andreas Hilboll [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: flight-planning, mission-support-system, scientific-software

Ming Chen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: climate, nwp, weather, wrf, atmospheric-modelling, atmospheric-science, grib, hpc-applications, meteorology, numerical-modelling and 16 more

Mohammed Anas [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: weather, weather-api, weather-forecast, physics, purescript, unit-conversion, units, fish, calculator, mathematical-expressions and 9 more

CorentinGrimaldi [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: astrophysics, closember, combustion, exoplanets, hitemp, hitran, infrared, plasma, plasma-physics, radiation and 2 more

Panos Mavrogiorgos [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: radiative-transfer, arrays, earth-observation, geospatial-analysis, grass-gis, open-science, parallel-computing, timeseries-analysis, zarr, datashader and 17 more

lewisblake [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: aerocom, aerosol, climate-science, earth-observation, model-evaluation, air-quality

Jan Jurgen Griesfeller [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: aerocom, aerosol, climate-science, earth-observation, model-evaluation, cmip6, air-quality

JoshLovesFun [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Dispersion and Transport
Topics:

Sabine Griessbach [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Dispersion and Transport
Topics: atmospheric-modelling, atmospheric-science, climate, climate-science, dispersion, dispersion-model, meteorology, stratosphere, trajectories, troposphere

Catrin [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Dispersion and Transport
Topics: atmospheric-modelling, atmospheric-science, climate, climate-science, dispersion, dispersion-model, meteorology, stratosphere, trajectories, troposphere

jjdd [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: bufr, earth-science, grib, meteorology, odb, weather

Carlos Valiente [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: bufr, earth-science, grib, meteorology, odb, weather, climate-data, copernicus, meteorological-data, pydata and 11 more

Ana Espinoza [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: atmospheric-science, cloud-computing, escience, geoscience, nsf, science-gateways, unidata, xsede, geodata, geospatial-data and 6 more

Mark Parncutt [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: gempak, goes, goes16, goes17, grib, gridded-data, meteorology, netcdf4, radar, unidata and 15 more

Mike Zuranski [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: gempak, goes, goes16, goes17, grib, gridded-data, meteorology, netcdf4, radar, unidata and 4 more

Jonas Sonnabend [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Dispersion and Transport
Topics: atmospheric-modelling, atmospheric-science, climate, climate-science, dispersion, dispersion-model, meteorology, stratosphere, trajectories, troposphere

Haim Daniel [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: big-data-program, cfgrib, ecmwf-data, gfs, grib, grib2, hrrr, noaa-data, nomads, numerical-weather-prediction and 15 more

Alexander Seiler [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: climate, data-assimilation, fluid-dynamics, adaptive-mesh-refinement, amr, conservation-laws, discontinuous-galerkin, hyperbolic-equations, numerical-simulation-framework, summation-by-parts and 75 more

Akshay Sridhar [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: climate, data-assimilation, fluid-dynamics

Ademipop [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: aerosol-chambers, aerosol-microphysics, atmospheric-modelling, chemical-scheme, indoor-air-quality

Chris weijenborg [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Dispersion and Transport
Topics:

Aryan Gupta [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: flight-planning, mission-support-system

Alexander Clausen [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: parallel, apache2, foss, search-engine, pydata, binder, data-processing, electron-microscopy, hyperspectral, hyperspy and 17 more

FL550 [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: deutscher-wetterdienst, dwd, dwd-weather, hacs, hass, weather, weather-entity, weather-forecast

Max [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: deutscher-wetterdienst, dwd, dwd-weather, hacs, hass, weather, weather-entity, weather-forecast

Mehmet Hakan Satman [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: atmospheric-science, eliassen-model, geophysical-fluid-dynamics, gill-matsuno-model, inversion-problem, meteorology, munk-stommel, oceanography, omega-equation, poisson-equation and 26 more

Nathan Simpson [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: genetic-algorithms, pokemon, showdown, diffusion-models, foundation-models, hut23, language-models, transformers, hut23-1013, hut23-677 and 5 more

Isabel Fenton [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: ecology, environmental-science, earth-observation, hut23, hut23-1206, cloudcasting, manchester-prize, turing-ocf

James Fulton [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: gans, night-vision, nowcasting, cloudcasting, manchester-prize, turing-ocf

Peter Yatsyshin [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: cloudcasting, manchester-prize, turing-ocf

James Robinson [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: hut23, hut23-190, hut23-448, hut23-612, hut23-306, hut23-848, hut23-134, readability, hut23-238, cloudcasting and 2 more

Joel Oskarsson [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

Ana Lucic [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: atmospheric-chemistry, atmospheric-dynamics, aurora-model, foundation-models, ocean-waves, tropical-cyclone-tracking, weather-prediction

luciano-drozda [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: atmospheric-chemistry, atmospheric-dynamics, aurora-model, foundation-models, ocean-waves, tropical-cyclone-tracking, weather-prediction

Matthew Griffith [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: bufr, decoding, encoding, grib, meteorology, wmo

Mamoru TASAKA [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: bufr, decoding, encoding, grib, meteorology, wmo, numerical-methods, closember, libvirt, vagrant and 6 more

Alexander Soklev [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: climate-model, radiative-transfer

Robert Neal [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: meteorology, weather

Jeremy Selva [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: environment-canada, weather-data, weather-downloader

mciechan [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: environment-canada, weather-data, weather-downloader

Gregory L. Wagner [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: fft, mpi, microsoft-mpi, mpich, openmpi

Kevin Ngai [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: gaw, ozone, ozonesonde, spectral, totalozone, ultraviolet, umkehr, uv, wmo

Alfred.Mayhew [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: atmospheric-chemistry, atmospheric-modelling, box-model, cvode, master-chemical-mechanism, mcm, aerosols, atmospheric-chemistry-modeling, atmospheric-composition, carbon-cycle and 8 more

Ubuntu [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: aerosols, atmospheric-chemistry, atmospheric-chemistry-modeling, atmospheric-composition, atmospheric-modelling, carbon-cycle, climate, cloud-computing, earth-system-modeling, greenhouse-gases and 4 more

Jason Leaver [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: atmospheric-science, hodograph, meteorology, skew-t, weather, weather-data

ucfaea1 [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Chemistry and Aerosol
Topics: aerosols, atmospheric-chemistry, atmospheric-chemistry-modeling, atmospheric-composition, atmospheric-modelling, carbon-cycle, climate, cloud-computing, earth-system-modeling, greenhouse-gases and 4 more

Ubuntu [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Atmospheric Composition and Dynamics
Topics: atmospheric-modelling, atmospheric-science, climate-model, geophysical-fluid-dynamics, planetary-atmospheres

Tobias [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: dwd, weather, deutscherwetterdienst, wetter

Darshan Patil [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Radiative Transfer
Topics: astrophysics, closember, combustion, exoplanets, hitemp, hitran, infrared, plasma, plasma-physics, radiation and 2 more

Johannes Schmude [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

Timothy Hunter [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

kctezcan [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

Kacper Nowak [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics:

Lars Schneider [email protected]

OST Projects: 1
Categories: Atmosphere
Sub Categories: Meteorological Observation and Forecast
Topics: deutscher-wetterdienst, dwd, dwd-weather, hacs, hass, weather, weather-entity, weather-forecast