GIS for Oil Spill

GIS for Oilspill Response ModelTen steps from NOAA GNOME modelthru ArcGIS time sliderto ArcGIS Online sharing

2010:GNOME

Oil Spill Model Output

Input into ArcMap

Prepare the data

Time slider

2015:ArcGIS OnlinePresentation Outline

http://response.restoration.noaa.gov/software/gnome/gnomeftp.htmlGNOME is a publicly available oil spill trajectory model that simulates oil movement due to winds, currents, tides, and spreading. GNOME was developed by the Hazardous Materials Response Division (HAZMAT) of the National Oceanic and Atmospheric Administration Office of Response and Restoration (NOAA OR&R). HAZMAT will use this model during spill response to calculate a best guess of a spills trajectory and the associated uncertainty in that trajectory.

(continued from NOAA website) GNOME is used to:Predict how winds, currents, and other processes might move and spread oil spilled on the water.

Learn how predicted oil trajectories are affected by inexactness ("uncertainty") in current and wind observations and forecasts.

See how spilled oil is predicted to change chemically and physically ("weather") during the time that it remains on the water surface.

Start GNOME with local ropme.org file

Apply oil spill model and locale parameters

Model is run on NOAA applicationBasic InputsInitial location and shape of Oil spill (Spill Map)Date, time & volume of Oil disposed in the seaWind speed and directionData for currents & waves

Main OutputVolume of Oil that reaches / remains the beachesAffected habitats, beds, anchorages etcLocations for Mitigation and RemediationNote that ONBEACH / INWATER limit differs from map coastline

Display is shown in ArcMapBasic Output (cont.)GNOME output dataTime series

Main InputGnome.dll from NOAAImport file seriesEach time-step a separate feature in separate geodatabase

WARNINGVery laborious

Basic ArcMap screen

Prepare dataCreate File GeodatabaseFeatures in separate Personal Geodatabase outputs all have the same nameFile Geodatabase allows to rename them sequentiallyAnd time stamp is preserved

Later note: time stamp field [Age] is Double formatTime Slider accepted it as-is in ArcMapTo be converted to Date format in ArcGIS Online

Format the Time Attributes

Add the Time Slider

Enjoy the Movie! (hover mouse over map)

Also now on YouTube

Extra: Prepare for ArcGIS OnlineTime stamp (Age) is Double formatAGOL will not post it as Time AwareNeed to add Field (Days) as Date format

Convert to Date / TimeDisable Time in the FeatureAdd FieldArcToolbox > Data Management > Fields > Add FieldInput Table: select FeatureField Type: DateCopy fieldField Calculator: Days = [Age]Notice its ~ 1900Set date to when Model is run forDays = #dd/mm/yyyy# + [Age]Re-enable Time in the Feature

For ArcGIS Online Add basemap: Dark grey canvasMake feature symbol:INWATER a white circleONBEACH a white crossSize: 10.0Mimic oilspill dispersion: size inverse proportion to Age Symbology > Advanced > Size >Expression: 50/[Age]Publish File > Share As > Map Package

In ArcMapMake feature symbol: INWATER an orange circleONBEACH a red circleSize: 10.0Publish File > Share As > Service Add basemap: Dark grey canvasNotice: limit of the two symbols doesnt match the coastlineNOAA model used ROMPE datasetlikely had a coastline of different vintage, scale or projection

or the webmap! Enjoy the video

Thank YouOpenWare (Esri agents in Kuwait for original presentation)Esri (Dawn Wright for encouraging story maps & web apps)Esri(UK) (Esri agents in UK for ongoing technical support)