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Metadata for NOAA/GLERL Muskegon, MI Met Station

LATITUDE: 43-13-36 N
LONGITUDE: 86-20-20 W
Site online: 14 Oct 1998

LOCATION: Coast Guard communications tower, Muskegon, MI

Lake level above sea level: 176.2 m
Site elevation (base of tower) above lake level: 2.3 m
Site elevation (base of tower): 178.5 m above mean sea level

Anemometer Height: 24.4 m above site elevation (base of tower)
Air Temp Height: 6.1 m above site elevation (base of tower)
Barometer Height: 2.4 m above ground (base of tower)
Barometer Height: 180.9 m above mean sea level

NOTE: The LMFS data processing and format was modified on Feb 06, 2001. The new format applies to LMFS files with a file extension ".05t". The old format and processing information is at: The old format applies to LMFS files with a file extension ".ftp"

Sensor Data:

Anemometer: R. M. Young Wind Monitor model 5106 Location: At top of tower at about 24.4 m above site elevation

Temperature and RH sensor: Vaisala HMP-155A Location: Located on tower at about 6.1 m above site elevation

Barometric Pressure Sensor: R. M. Young model 61302V Location: Located on tower at about 2.4 m above site elevation

PAR sensor: Biospherical Instruments model QSR-240R. Located on the roof at the north end of the LMFS garage building, next to the tower. Calibrated 2/2011. Spherical sensor. Prior to 2005, the units were E15 quanta/cm2/s. 2005-present, units are uE/m2/s. To convert E15 quanta/cm2/s to uE/m2/s, multiply by E15*100*100 and divide by 6.02E17 (=16.61). Max value about 3200 uE/m2/s.

Wind speed is the mean wind during the 2-minute recording period. Wind gust is the maximum wind during the same 2-minute recording period. Peak wind is max wind gust during entire hour.

Data collection:

Data is acquired and processed via a Campbell Scientific CR1000X Data Logger, and periodically downloaded by servers at GLERL. The data logger samples the sensors once every 5 seconds and averages the data over two minutes.

Notes on Barometric Pressure:

1. Barometric Pressure values were corrected to sea level (offset = 22mb, h=183.5m, T=53F) at 1855 UTC, 12/15/1999.

2. The 22mb offset to barometric pressure was removed at 1845 UTC, 03/16/2000. The reported pressure is now station pressure, from which sea level pressure is calculated.

WebCam Image: See WebCam Details.

Data Line for file yyyymmdd.05t.txt: The data line is space delimited and consists of the following columns in order from left to right.

1:Station ID, Muskegon=5
3:Day of Year
4:Time, UTC
5:Average air temperature, Deg C
6:Scalar average wind speed, m/s
7:Wind Speed maximum, m/s
8:Unit vector average wind direction, degrees from (0=north, 90=east)
9:Average relative humidity, %
10:Average station pressure, millibars
11:Average PAR, (Photosynthetically active radiation), E15 quanta/cm2/s prior to 2005, uE/m2/s 2005-present
12:Average dew point, Deg C

-99 = missing/bad data

Marine Instrumentation Laboratory
12 Feb 2024