NOAA / GLERL / Real-Time Meteorological Observation Network

Metadata for NOAA/GLERL Muskegon, MI Met Station

Return to Muskegon Met Data page
Muskegon LMFS Met station information sheet:

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

LOCATION:  Coast Guard communications tower, Muskegon, MI
Site elevation 179.3m above mean sea level
Lake level above sea level: 179.0 m
Base of tower above lake level: 3.1 m

Anemometer Height: 24.4 m above site elevation
Air Temp Height: 6.1 m above site elevation
Barometer Height: 1.6m above site elevation
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 5103
Location:  At top of tower at about 24.4 m above site elevation

Temperature and RH sensor:  R.M. Young model 41372VC
Location:  Installed in R.M. Young model 41002P multiplate
radiation shield, located on tower at about 6.1 m above site elevation

Barometric Pressure Sensor:  R. M. Young model 61201 and an attached model 61002
remote barometric pressure port
Location:  Located on tower at about 1.6m above site elevation

PAR sensor:  Biospherical Instruments model QSR-240.  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. 

Data collection:

Data is acquired and processed via a Campbell Scientific CR1000 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, except for max wind speed (wind gust), which is the maximum 
value during the two minute period.

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:Scaler 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

Marine Instrumentation Laboratory
17 Feb 2015