VDOT

GeoRSS feed - Environmental Sensor Stations

The GeoRSS feed can be accessed via the following URL: http://www.vdotdatasharing.org/GeoRSS/ESSMessage The feed contains the following fields:

Field Description Example
title Contains the station name and id NOVA-RWIS-71210
description Contains the description of all the weather events this station monitors Adjacent Snow Depth: 0.0, Air Temperature: 0.0, Atmospheric Pressure: 0.0, Average Wind Direction: 0, Average Wind Speed: 0.0, Dewpoint Temperature: 0.0, Ice Thickness: 0.0, Max Wind Gust Direction: 0, Max Wind Gust Speed: 0.0, Precipitation Rate: 0.0, 24 Hour Precipitation Rate: 0.0, 1 Hour Precipitation Rate: 0.0, 6 Hour Precipitation Rate: 0.0, 3 Hour Precipitation Rate: 0.0, 12 Hour Precipitation Rate: 0.0, Relative Humidity: 0, Roadway Snow Depth: 0.0, Roadway Snow Pack Depth: 0.0, Route Name: I-395, Snowfall Rate: 0, Solar Radiation: 0, Spot Wind Direction: 0, Spot Wind Speed: 0.0, Surface Freeze Point: 0.0, Surface Salinity: 0.0, Surface Temperature 0.0, Total Sunlight: 0, Visibility: 0.0, Wet Bulb Temperature: 0.0, Last Updated: Sep 25, 2012 11:56:04 PM
link This is a link to the xml message for this weather station http://www.vdotdatasharing.org/xmldb/ESSMessage/NOVA-RWIS-71210
georss:point This is the GIS location of the weather station 37.241928 -79.730888

XML Database Record

The XML database record can be accessed via the following URL: http://www.vdotdatasharing.org/xmldb/ESSMessage/sender_id where sender_id is the id for the specific environmental sensor. The following is an example of the XML record:

<orci:stationList xmlns:tmdd="http://www.tmdd.org/3/messages" xmlns:ess="http://www.openroadsconsulting.org/orci_ess" xmlns:orci="http://www.openroadsconsulting.org/weather"> <orci:station> <orci:inventory> <device-inventory-header> <organization-information> <organization-id>VDOT</organization-id> </organization-information> <device-id>NOVA-RWIS-71210</device-id> <device-location> <latitude>36824127</latitude> <longitude>-79189070</longitude> </device-location> <device-name>ESS Sim Device WxStation 6</device-name> <link-name>I-95</link-name> <link-direction>N</link-direction> <linear-reference>80.4</linear-reference> <last-update-time> <date>20121212</date> <time>102307</time> <offset>-0500</offset> </last-update-time> </device-inventory-header> </orci:inventory> <orci:data> <station-id>NOVA-RWIS-71210</station-id> <ess-sensor-list> <ess-sensor> <ess-observation-type> <ess:weather-data> <ess:avg-wind-direction>24</ess:avg-wind-direction> <ess:avg-wind-speed>1.3</ess:avg-wind-speed> <ess:avg-wind-gust-speed>3.1</ess:avg-wind-gust-speed> <ess:air-temperature>7.2</ess:air-temperature> <ess:dewpoint-temp>0.5</ess:dewpoint-temp> <ess:relative-humidity>33</ess:relative-humidity> <ess:atmospheric-pressure>144.5</ess:atmospheric-pressure> <ess:precip-rate>1.5</ess:precip-rate> <ess:snowfall-accum-rate>152</ess:snowfall-accum-rate> <ess:visibility-data>178.3</ess:visibility-data> <ess:max-wind-gust-direction>76</ess:max-wind-gust-direction> <ess:max-wind-gust-speed>3.1</ess:max-wind-gust-speed> <ess:spot-wind-direction>275</ess:spot-wind-direction> <ess:spot-wind-speed>4.5</ess:spot-wind-speed> <ess:wetbulb-temp>4.6</ess:wetbulb-temp> <ess:precipitation-one-hour>1.2</ess:precipitation-one-hour> <ess:precipitation-three-hour>1.4</ess:precipitation-three-hour> <ess:precipitation-six-hour>1.6</ess:precipitation-six-hour> <ess:precipitation-twelve-hour>1.8</ess:precipitation-twelve-hour> <ess:precipitation-24-hour>0</ess:precipitation-24-hour> <ess:solar-radiation>100</ess:solar-radiation> <ess:total-sun>600</ess:total-sun> </ess:weather-data> </ess-observation-type> </ess-sensor> <ess-sensor> <ess-observation-type> <ess:surface-data> <ess:adjacent-snow-depth>0</ess:adjacent-snow-depth> <ess:roadway-snow-depth>0</ess:roadway-snow-depth> <ess:roadway-snow-pack-depth>0</ess:roadway-snow-pack-depth> <ess:ice-thickness>0</ess:ice-thickness> <ess:surface-temperature>18.8</ess:surface-temperature> <ess:surface-salinity>0</ess:surface-salinity> <ess:surface-freeze-point>0</ess:surface-freeze-point> <ess:surface-status>3</ess:surface-status> <ess:pavement-sensor-error>2</ess:pavement-sensor-error> </ess:surface-data> </ess-observation-type> </ess-sensor> <ess-sensor> <ess-observation-type> <ess:subsurface-data> <ess:subsurface-temperature>152</ess:subsurface-temperature> <ess:subsurface-status>2</ess:subsurface-status> </ess:subsurface-data> </ess-observation-type> </ess-sensor> </ess-sensor-list> </orci:data> </orci:station> </orci:stationList>

The following data elements are represented in the XML message:

LineFieldDescription
6organization-idThe organization responsible for this sensor
8device-idThe id of the station
10latitudeThe latitude of the station
11longitudeThe longitude of the station
13device-nameThe name of the station
14link-nameThe roadway upon which the station is located
15link-directionThe travel direction on the road where the station is located
16linear-referenceThe milemarker on the road of the station
18dateThe date for the detector update in yyymmdd format
19timeThe time for the detector status update in hhmmss format
20offsetThe time zone offset time in hhmm format
30avg-wind-direction This is the average wind direction in degrees
31avg-wind-speed This is the average wind speed in meters per second
32avg-wind-gust-speed This is the average wind gust speed in meters per second
33air-temperature This is the air temperature in Celsius
34dewpoint-temp This is the dewpoint temperature in Celsius
35relative-humidity This is the relative humidity as a percentage
36atmospheric-pressure This is the atmospheric pressure in Inches
37precip-rate This is the precipitation rate in tenths of grams per square meter per second
38snowfall-accum-rate This is the snowfall accumulation rate in 10e-7 meters per second
39visibility-data This is the visibility in meters.
40max-wind-gust-direction This is the max wind gust direction in degrees
41max-wind-gust-speed This is the max wind gust speed in meters per second
42spot-wind-direction This is the spot wind direction in degrees
43spot-wind-speed This is the spot wind speed in meters per second
44wetbulb-temp This is the wetbulb temperature in Celsius
45precipitation-one-hour This is the precipitation one hour in kilograms per square meter
46precipitation-three-hour This is the precipitation three hour in kilograms per square meter.
47precipitation-six-hour This is the precipitation six hour in kilograms per square meter
48precipitation-twelve-hour This is the precipitation twelve hour in kilograms per square meter
49precipitation-24-hours This is the precipitation 24 hours in tenths of kilograms per square meter
50solar-radiation This is the solar radiation in joules per square meter
51total-sun This is the total sun in minutes for the preceding 24 hours
58adjacent-snow-depth This is the adjacent snow depth in centimeters
59roadway-snow-depth This is the roadway snow depth in centimeters
60roadway-snow-pack-depth This is the roadway snow pack depth
61ice-thickness This is the ice thickness in millimeters
62surface-temperature This is the surface temperature in Celsius
63surface-salinity This is the surface salinity
64surface-freeze-point This is the surface freeze point
65surface-status This is the surface status. Values include: 1. Other 2. Error 3. Dry 4. Trace Moisture 5. Wet 6. Chemically Wet 7. Ice Warning 8. Ice Watch 9. Snow Warning 10. Snow Watch 11. Absorption 12. Dew 13. Frost 14. Absorption at Dew Point
66pavement-sensor-error This is the pavement sensor error. Values include: 1. Other 2. None 3. No Response 4. Cut Cable 5. Short Circuit 6. Dirty Lens
73subsurface-temperature This is the subsurface temperature in tenths of degrees Celsius
74subsurface-sensor-error This is the subsurface sensor error. Values include: 1. Other 2. None 3. No Response 4. Cut Cable 5. Short Circuit

WMS-C Layer

The WMS-C layer can be accessed using the following parameters:

Service http://www.vdotdatasharing.org/geowebcache/service/wms
Layer ess_message
Format image/png
Tile Size 256x256
SRS EPSG:900913
EPSG:4326

WFS Layer

The WFS layer can be accessed here. The feed contains the following fields:

Field Description Example
orci:device_id This is the id for the device ESS10429
orci:v7_device_id This is the historical id for the device ESS10429
orci:adjacent_snow_depth Measurement for snow depth in inches 0.0
orci:air_temperature Measurement for air temperature in degrees Celsius 7.2
orci:atmospheric_pressure Measurement for atmospheric pressure measured in Inches 144.6
orci:avg_wind_direction Measurement for wind direction in degrees 24
orci:avg_wind_speed Measurement for wind speed in meters per second 1.3
orci:device_name This is the name of the device ESS Sim Device WxStation 6
orci:dewpoint_temp Measurement for dewpoint temp in degrees Celsius 0.5
orci:ice_thickness Measurement for ice thickness in inches 0.0
orci:max_wind_gust_direction Measurement for the wind gust direction in degrees 76
orci:max_wind_gust_speed Measurement for the wind gust speed in meters per second 3.1
orci:precip_24_hour This is the precipitation 24 hours in kilograms per square meter 0.0
orci:precip_one_hour This is the precipitation one hour in kilograms per square meter 1.2
orci:precip_rate This is the precipitation rate in tenths of grams per square meter per second 1.5
orci:precip_six_hour This is the precipitation six hour in kilograms per square meter 1.6
orci:precip_three_hour This is the precipitation three hour in kilograms per square meter 1.4
orci:precip_twelve_hour This is the precipitation twelve hour in kilograms per square meter 1.8
orci:relative_humidity Measurement for the humidity percentage 33
orci:roadway_snow_depth Measurement for the snow depth in inches 0.0
orci:roadway_snow_pack_depth Measurement for the pack depth in inches 0.0
orci:route_name The route name on which the station is located I-64
orci:sensor_error The error of the weather sensor 2
orci:snowfall_accum_rate This is the snowfall accumulation rate in 10e-7 meters per second 152
orci:solar_radiation Measurement of the amount of solar radiation measured in joules 100
orci:spot_wind_direction Measurement of the spot wind direction in degrees 275
orci:spot_wind_speed Measurement of spot wind speed in meters per second 4.5
orci:surface_freeze_point Measurement for the surface freeze point in degrees Celsius 0.0
orci:surface_salinity Measurement for the surface salinity 0.0
orci:surface_status Represents the current surface status 3
orci:surface_temperature Measurement for the surface temperature in degrees Celsius 18.8
orci:the_geom The GeoRSS point for this weather station <gml:Point srsDimension="2" srsName="urn:x-ogc:def:crs:EPSG:4326"> <gml:pos>37.241928 -79.730888</gml:pos> </gml:Point>
orci:total_sun Measurement of the total sun in minutes for the preceding 24 horus 600
orci:travel_direction The direction of travel that this weather station monitors E
orci:update_time The last time this weather station was updated 2012-08-09T13:24:46Z
orci:visibility Measurement for visibility in meters 178.3
orci:wetbulb_temp Measurement for the wetbulb temperature in degrees Celsius 4.6
orci:subsurface_temperature Measurement for the subsurface temperature in tenths of degrees Celsius 152
orci:subsurface_status The subsurface error 2