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ERDDAP > info > hawaii_soest_d70c_7d79_1c8f

Title Sum-
Institution Dataset ID
 data       graph     public Vog Measurement and Prediction Project (VMAP) Regional Forecast Model: Main Hawaiian Islands,
0.01°, 2015
   ?   F   I   M   background (external link) RSS Subscribe University of Hawaii hawaii_soest_d70c_7d79_1c8f

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL acknowledgement String The Vog Measurement and Prediction Project (VMAP) is a vog research and forecast project funded by the U.S. Geological Survey (USGS) through a cooperative agreement with the University of Hawaii School of Ocean and Earth Science and Technology (SOEST). The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by SOEST.
attribute NC_GLOBAL author String Sarah Williamson
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL comment String Model runs produced by Dr. Steven Businger (
attribute NC_GLOBAL contributor_name String Dr. Jim Potemra
attribute NC_GLOBAL contributor_role String Data Manager
attribute NC_GLOBAL Conventions String CF-1.6, ACDD-1.3, COARDS
attribute NC_GLOBAL creator_email String businger at
attribute NC_GLOBAL creator_institution String University of Hawaii
attribute NC_GLOBAL creator_name String Dr. Steven Businger
attribute NC_GLOBAL creator_type String person
attribute NC_GLOBAL creator_url String (external link)
attribute NC_GLOBAL date_created String 2017-08-22
attribute NC_GLOBAL date_issued String 2017-08-22
attribute NC_GLOBAL date_metadata_modified String 2017-08-22
attribute NC_GLOBAL date_modified String 2017-08-22
attribute NC_GLOBAL Easternmost_Easting double -149.00000000001364
attribute NC_GLOBAL geospatial_bounds String POLYGON ((13.0 -164.0, 28.0 -164.0, 28.0 -149.0, 13.0 -149.0, 13.0 -164.0))
attribute NC_GLOBAL geospatial_bounds_crs String EPSG:4326
attribute NC_GLOBAL geospatial_lat_max double 28.000000000001812
attribute NC_GLOBAL geospatial_lat_min double 13.0
attribute NC_GLOBAL geospatial_lat_resolution double 0.010000000000001208
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -149.00000000001364
attribute NC_GLOBAL geospatial_lon_min double -164.0
attribute NC_GLOBAL geospatial_lon_resolution double 0.009999999999990905
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL history String UH/SOEST (S. Businger), PacIOOS distribution (08/2017)
attribute NC_GLOBAL id String vmap_hi
attribute NC_GLOBAL infoUrl String (external link)
attribute NC_GLOBAL institution String University of Hawaii
attribute NC_GLOBAL instrument String Not Applicable > Not Applicable
attribute NC_GLOBAL instrument_vocabulary String GCMD Instrument Keywords
attribute NC_GLOBAL ISO_Topic_Categories String climatologyMeteorologyAtmosphere, health
attribute NC_GLOBAL keywords String activity, advisories, aerosol, air, ambient, atmosphere, atmospheric, averaged, between, chemistry, compounds, concentration, data, dioxide, dispersion, dissolved, dissolved o2, dynamics, earth, Earth Science > Atmosphere > Air Quality > Sulfur Oxides, Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds, Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds, Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Sulfate, Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Sulfur Dioxide, Earth Science > Atmosphere > Atmospheric Chemistry > Sulfur Compounds > Sulfur Oxides, Earth Science > Solid Earth > Tectonics > Volcanic Activity > Eruption Dynamics > Gas/Aerosol Dispersion, Earth Science Services > Environmental Advisories > Geological Advisories > Volcanic Activity, Earth Science Services > Models > Weather Research/Forecast Models, environmental, eruption, forecast, forecasting, gas, gas/aerosol, geological, hawaii, hawaiian, islands, latitude, longitude, main, mass, mass_concentration_of_sulfate_ambient_aerosol_particles_in_air, mass_concentration_of_sulfur_dioxide_in_air, measurement, mhi, model, models, O2, optical, optical properties, oxides, oxygen, particles, prediction, project, properties, quality, regional, research, research/forecast, science, services, so2, so4, solid, sulfate, sulfur, tectonics, time, university, vmap, vog, volcanic, weather, wrf
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String These model data were generated as part of an academic research project, and the principal investigator, Steven Businger (, asks to be informed of intent for scientific use and appropriate acknowledgment given in any publications arising therefrom. The data are provided free of charge, without warranty of any kind. The information contained in VMAP is for general information purposes only. While the VMAP team endeavors to keep the information accurate and up-to-date, they make no representations, warranties, or guarantees about the completeness, accuracy, reliability, suitability, or availability with respect to the VMAP data or the information, products, services, or related graphics derived therefrom for any purpose. Although every effort is made to avoid interruptions to VMAP access, any reliance upon such information is strictly at your own risk. In no event will the University of Hawaii at Manoa (UHM), the UHM Department of Atmospheric Sciences, the VMAP team, or any personnel or collaborator associated with VMAP or PacIOOS be liable for any losses or damages (direct or indirect) without limitation whatsoever in connection with the use of the VMAP data. The general public is welcome to use VMAP at this time with no expectation of accuracy or timeliness. The VMAP team welcomes constructive comments from all VMAP users, and strives to provide the best possible service consistent with their mission and resources. Inquiries into actual measured values and concerns regarding hazardous conditions should be directed to the appropriate agency such as the Hawaii State Department of Health. The VMAP data are intended to be complementary to the data provided by other state and federal agencies.
attribute NC_GLOBAL locations String Continent > North America > United States Of America > Hawaii, Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands
attribute NC_GLOBAL locations_vocabulary String GCMD Location Keywords
attribute NC_GLOBAL Metadata_Link String (external link)
attribute NC_GLOBAL naming_authority String org.pacioos
attribute NC_GLOBAL Northernmost_Northing double 28.000000000001812
attribute NC_GLOBAL platform String Models/Analyses > > Operational Models
attribute NC_GLOBAL platform_vocabulary String GCMD Platform Keywords
attribute NC_GLOBAL program String Vog Measurement and Prediction Project (VMAP)
attribute NC_GLOBAL project String Vog Measurement and Prediction Project (VMAP)
attribute NC_GLOBAL publisher_email String info at
attribute NC_GLOBAL publisher_institution String University of Hawaii
attribute NC_GLOBAL publisher_name String Pacific Islands Ocean Observing System (PacIOOS)
attribute NC_GLOBAL publisher_type String group
attribute NC_GLOBAL publisher_url String (external link)
attribute NC_GLOBAL references String,,, (external link)
attribute NC_GLOBAL source String Vog Measurement and Prediction Project (VMAP) model, HYbrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT), Weather Research and Forecast (WRF)
attribute NC_GLOBAL sourceUrl String (external link)
attribute NC_GLOBAL Southernmost_Northing double 13.0
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v39
attribute NC_GLOBAL summary String The Vog Measurement and Prediction Project (VMAP) provides twice-daily forecasts of vog (volcanic smog) for the region surrounding the main Hawaiian islands at approximately 1-km resolution. Generated using the HYbrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) numerical dispersion model, VMAP uses estimates of volcano emissions along with forecast winds to predict the concentrations of sulfur dioxide gas (SO2) and sulfate aerosol particles (SO4) averaged over the lowest 100-m of the atmosphere downwind of the ongoing Kilauea eruption on Hawaii Island. Wind fields and thermodynamic forecast data produced by the Mauna Kea Weather Center (MKWC) from the state-of-the-art Weather Research and Forecast (Weather Research and Forecasting Model (WRF)) model, with a statewide resolution of 4.5 km, provide input for the HYSPLIT model. A combination of remote sensing and in situ observations are used to provide initial conditions regarding volcanic emissions and to validate the model simulations. Vog is a form of air pollution that results from volcanic emissions that is primarily a mixture of SO2 gas and SO4 aerosol. SO2 (invisible) reacts with oxygen and moisture in the air to produce SO4 aerosol (visible). SO2 is expected to be the main problem in areas near the vent (Hawaii Volcanoes National Park) while SO4 aerosol is expected to be the main problem at locations far from the vent (Kona and farther north and west).
attribute NC_GLOBAL time_coverage_end String 2015-10-09T12:00:00Z
attribute NC_GLOBAL time_coverage_resolution String PT12H
attribute NC_GLOBAL time_coverage_start String 2015-10-08T00:00:00Z
attribute NC_GLOBAL title String Vog Measurement and Prediction Project (VMAP) Regional Forecast Model: Main Hawaiian Islands, 0.01°, 2015
attribute NC_GLOBAL type String Vog: SO2 and SO4 file
attribute NC_GLOBAL Westernmost_Easting double -164.0
dimension time   double nValues=4, evenlySpaced=true, averageSpacing=12h 0m 0s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.4442624E9, 1.444392E9
attribute time axis String T
attribute time ioos_category String Time
attribute time long_name String Time
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
dimension latitude   double nValues=1501, evenlySpaced=true, averageSpacing=0.010000000000001208
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range double 13.0, 28.000000000001812
attribute latitude axis String Y
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
dimension longitude   double nValues=1501, evenlySpaced=true, averageSpacing=0.009999999999990905
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range double -164.0, -149.00000000001364
attribute longitude axis String X
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable so4   double time, latitude, longitude
attribute so4 ioos_category String Optical Properties
attribute so4 long_name String sulfate (SO4) concentration averaged between 0 m and 100 m
attribute so4 standard_name String mass_concentration_of_sulfate_ambient_aerosol_particles_in_air
attribute so4 units String ug/m3
variable so2   double time, latitude, longitude
attribute so2 ioos_category String Dissolved O2
attribute so2 long_name String sulfur dioxide (SO2) concentration averaged between 0 m and 100 m
attribute so2 standard_name String mass_concentration_of_sulfur_dioxide_in_air
attribute so2 units String ppm

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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