Data for Chicago Meteorological Station: LATITUDE: N/A LONGITUDE: N/A Site online: 03 Aug 2000 LOCATION: On the Harrison-Dever Crib, approximately 2.75 miles offshore from the City of Chicago. Site Elevation: 176.0 m above mean sea level Anemometer Height: 25.9 m above site elevation Air Temp Height: 22.9 m above site elevation Wind Sensor: R.M. Young model 5103 Wind monitor Temperature Sensor: CSI model 107 thermistor mounted in a naturally aspirated gill type radiation shield. Note: Sensors were calibrated/serviced 3/06 Processor: CSI model CR10X. This units samples the sensors every second and is set to an averaging interval of 5 minutes. For each 5-minute interval, a mean and max (gust) wind speed are reported. The peak wind is the max of all of the gusts during the hour. The wind speed shown in the "18-Hour" table and in the "5-day" graph are from the 5-minute period at the top of the hour. The data listed in the link below the "18-Hour" table (today's 5-minute data) and in the "3-hour" graph are every 5 minutes. Power: The system is run from a 12A/hr gel cell battery which is maintained with a Yuasa charger from the available AC line. This system will provide 5 days of operation should AC power fail. WebCam Image: See WebCam Details. Scheme: The CR10X is connected to a BlueTree Wireless CDMA RF modem. Functionally this system represents wireless IP. The system is interrogated by a PC from Ann Arbor running the CSI LoggerNet software very 15 minutes. The data set consists of three 5 minute data ensembles. Averaging and interrogation intervals and the system program are adjustable remotely. The system data rate is set to 9600 baud. Data Line: The data line is comma delimited and consists of the following in order from left to right. Station ID, Chicago=4 Year Julian Day Time, GMT Battery Voltage Panel (equipment compartment) Temperature, Deg C AC power 128=off, 0=on Average air temperature, Deg C Air temperature standard deviation, Deg C Wind Speed minimum, m/s Wind Speed maximum, m/s Wind Speed, standard deviation m/s Wind Speed, scalar average, m/s Wind Direction, unit vector average, degrees from (0=from north, 90=from east) Wind Direction, standard deviation, degrees. -99 = missing/bad data John Lane USDOC-NOAA-GLERL Marine Instrumentation Laboratory 6/30/06