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Wind speed and direction

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Current Conditions
Wind Speed (mph) 10.4
Wind Speed (kts) 9.0
Wind Direction (deg N) 278
NOAA ESRL Wind Data
Wind Speed (mph) 11.7
Wind Speed (kts) 10.2
Wind Direction (deg N) 262
Last update: Wed Aug 15 17:10:00 2018 PDT

A note about wind measurements: the BML anemometer is located on a 10 m tower atop the Laboratory at a total height 20 m. The NOAA ESRL anemometer is atop a 10 m ground mounted tower ~200 m north of the Laboratory. Differences in the physical location of the two sensors may result in different observations.

All real time data >

Wind

Wind is caused by differences in air density or pressure. Air moves from areas of high pressure to areas of low pressure. The greater the pressure difference, the stronger the wind. Wind drives daily changes in weather, causing clouds and moisture to move across the Earth’s surface.

Meteorologists use wind in conjunction with barometric pressure to create weather forecasts, and wind measurements are of particular importance to mariners and aviators. Scientists study the affect of wind on circulation, upwelling, and how it may interact with currents to drive climate change.

Wind speed and direction are measured with an anemometer.

BML Wind Speed Gusts in mph

BML Wind Speed Gusts in kts

BML Wind Direction

NOAA Earth System Research Laboratory (ESRL) has a suite of meteorological sensors installed at the Bodega Marine Reserve. NOAA ESRL wind data is compared with BML wind data here.

Note that the BML anemometer is located on a 10 m tower atop the Laboratory at a total height 20 m. The NOAA ESRL anemometer is atop a 10 m ground mounted tower ~200 m north of the Laboratory. Differences in the physical location of the two sensors may result variation of the observations.

Wind Speed Comparison Plot

Wind Direction Comparison Plot

anemometerInstrument Type: RM Young 8600 Ultrasonic Anemometer

Description: 2-axis, no-moving-parts wind sensor

Location: 10 m tower atop Laboratory South Wing (total height 20 m)
Latitude 38° 19' 03.35" N
Longitude 123° 04' 17.20" W

Installed: 20 February 2015

Specifications: Wind Speed
Range: 0 to 156 mph (0 to 70 m/s)
Accuracy: 0 to 30 m/s ±2% or 0.1 m/s, 30 to 70 m/s ±3%
Starting Threshold: 0.56 mph (0.25 m/s)

Specifications: Wind Direction
Range: 0-360 degrees
Accuracy: ±2 degrees
Resolution: 0.1 degrees

Acquisition Settings:
Output interval: 5 seconds
Sample Count: 100

anemometerInstrument Type: RM Young 05103 Wind Monitor

Description: 4-blade helicoid propeller and wind vane

Location: 10 m tower atop Laboratory South Wing (total height 20 m)
Latitude 38° 19' 03.35" N
Longitude 123° 04' 17.20" W

Installed: 1 May 2001 - 12 May 2014

Specifications: Wind Speed
Range: 0 to 134 mph (0 to 60 m/s)
Accuracy: 0.6 mph (0.3 m/s)
Propeller Distance Constant: 8.9 ft (2.7 m)
Starting Threshold: 2.2 mph (1 m/s)

Specifications: Wind Direction
Range: 0 to 355 degrees
Accuracy: 3 degrees
Dead Band: 5 degree (355 to 360 degrees)
Delay Distance: 1.3 m (4.3 ft)
Starting Threshold: 2.4 mph (1.1 m/s)

Acquisition Settings:
3 second running average
Mean value logged every 1 second