Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Current Methods


  • Started: 1996-07-29

    The station provides near real-time monitoring for meteorological variables including wind speed and direction, air and water temperature, relative humidity, barometric pressure, and total solar irradiance. Data are automatically downloaded via radio frequency modem on an hourly basis with 15 minute average records collected and stored during each downloading cycle. Data are available in an hourly and daily format.

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
RECORDTIMEDate/Time

Time and date when measurments were recorded

Measurement type: DateTime
Date/Time Format: YYYY-MM-DD hh:mm:ss
SAMPLEYEARSample Year

Sample year as recorded by datalogger

Measurement type: Interval
Unit: unavailable
Precision: 1
SAMPLEMONTHSample Month

Sample month of data collection

Measurement type: DateTime
Date/Time Format: other
SAMPLETIMESample Time

Sample time as recorded by datalogger

Measurement type: Interval
Units:
Precision: 1
38m_AIRTEMP38m Air Temperature

Measured air temperature at 38 meters above mean sea level

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
32m_AIRTEMP32m Air Temperature

Air Temperature at 32 meters above mean sea level

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
38m_RELHUMID38m Relative Humdity

Relative humidity at 38 meters above mean sea level

Measurement type: Ratio
Units: dimensionless
Precision: 0.01
32m_RELHUMID32m Relative Humidity

Relative humidity at 32 meters above mean sea level

Measurement type: Ratio
Units: dimensionless
Precision: 0.01
32m_BAROPRESS32m Barometric Pressure

Measured barometric pressure at 32 meters above mean sea level

Measurement type: Ratio
Units: millibar
Precision: 1
PYRANOMPyranometer Reading

Pyranometer reading of solar intensity

Measurement type: Ratio
Unit: unavailable
Precision: 0.01
WATERTEMPWater Temperature

Measured water temperature

Measurement type: Interval
Unit: unavailable
Precision: 0.001
Met1_38m_MAX_WINDSPEED38m Met1 Maximum Wind Speed

Maximum wind speed at 38 meters above mean sea level using Met1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: Ratio
Units: meters per second
Precision: 0.001
NRG_38m_MAX_WINDSPEED38m NRG Maximum Wind Speed

Highest recorded wind speed using NRG equipment at 38 meters above mean sea level

Measurement type: Ratio
Units: meters per second
Precision: 0.001
Met1_38m_TIME_MAX_WINDSPEED38m Met1 Time Maximum Wind Speed

Time of maximum wind speed at 38 meters above mean sea level using Met1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: DateTime
Date/Time Format: other
NRG_38m_TIME_MAX_WINDSPEED38m NRG Time Maximum Wind Speed

Time of maximum wind speed at 38 meters above mean sea level using NRG equipment

Measurement type: DateTime
Date/Time Format:
Met1_38m_MEAN_WIND_DIRECTION38m Met1 Mean Wind Direction

Average wind direction at 38 meters above mean sea level using Met1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: Ratio
Unit: unavailable
Precision: 0.1
NRG_38m_MEAN_WIND_DIRECTION38m NRG Mean Wind Direction

Average wind direction at 38 meters above mean sea level using NRG equipment

Measurement type: Ratio
Unit: unavailable
Precision: 0.1
Met1_38m_STDDEV_WIND_DIRECTION38m Met1 Wind Direction Standard Deviation

Standard deviation of wind direction at 38 meters above mean sea level using Met 1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
NRG_38m_STDDEV_WIND_DIRECTION38m NRG Wind Direction Standard Deviation

Standard deviation of wind direction at 38 meters above mean sea level using NRG equipment

Measurement type: Ratio
Unit: unavailable
Precision: 1
PRECIPPrecipitation

Measured amount of precipitation

Measurement type: Ratio
Unit: unavailable
Precision: 0.001
Met1_38m_MEAN_HORIZONTAL_WINDSPEED38m Met1 Mean Horizontal Wind Speed

Average horizontal wind speed at 38 meters using Met 1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: Ratio
Units: meters per second
Precision: 0.001
NRG_38m_MEAN_HORIZONTAL_WINDSPEED38m NRG Mean Horizontal Wind Speed

Mean horizontal wind speed using NRG equipment

Measurement type: Ratio
Units:
Met1_38m_MEAN_RESULTANT_WINDSPEED38m Met1 Mean Resultant Wind Speed

Average resultant wind speed using Met1 equipment. The Met1 sensor data became unreliable after 14:00 EST August 25, 2009 and have been removed.

Measurement type: Ratio
Units: meters per second
Precision: 0.001
NRG_38m_MEAN_RESULTANT_WINDSPEED38m NRG Mean Resultant Wind Speed

Mean resultant wind speed using NRG eqipment

Measurement type: Ratio
Units:

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

Current Equipment

  • Data logger, meteorological sensors, radio fr
    Started: 1996-07-29

    Campbell Scientific CR 10X datalogger with meteorological sensors and radio frequency modem.

Past Sampling Equipment (No longer in use)

  • Anemometer
    Started: 1996-07-29
    Ended: 1999-12-31

    R.M. Young anemometer used at heigh of 38 meters from 1996 to 2000

  • Anemometer
    Started: 2000-01-01
    Ended: 2003-12-31

    NRG Systems anemometer placed at height of 38 meters

  • Anemometer
    Started: 2003-01-01
    Ended: 2005-12-31

    Met One Instruments anemometer used at height of 38 meters for several years from 2003 to 2005

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

    The site is located at latitude 44.5550985, longitude -73.3289647, WGS 1984 coordinate system

  • Site Description

    Colchester Reef on the US Coast Guard Station navigational warning light tower, on the lake.

Dataset Notes

Notes describing any special conditions or considerations for understanding the quality and consistency of the data


Start Date End Date Note Date Entered
2016-07-06 13:00:002016-07-06 15:00:00Replaced CR 38 m air temperature/relative humdity and barometric pressure sensors, pyranometer and battery. Checked wind anemometer and rain gauge which were ok.2016-07-20 00:00:00
2015-08-17 10:00:002015-08-17 11:30:00Station was serviced and offline during this period. Any data logged during this period was converted to null. Anemometer and pyranometer were replaced.2015-08-18 08:00:00
2015-08-07 09:30:002015-08-07 12:00:00Station was serviced, and offline during this period. Any data logged during this period was converted to NULL. Sensors for wind direction, relative humidity, temperature and barometric pressure were replaced.2015-08-07 00:00:00
2014-10-31 09:00:002014-10-31 12:00:00Station was serviced, and offline during this period. Any data logged during this period was converted to null. New water temperature sensor was installed.2015-08-07 00:00:00
2011-07-25 10:00:002011-07-25 10:00:0038m Met One wind replaced on 7/25/11 @ 10:00am2011-08-02 13:41:00
2011-01-01 00:00:002014-10-31 10:00:00Water temperature sensor was detached from station. Reinstalled on 10/31/20142015-08-07 00:00:00
2010-05-06 13:06:000000-00-00 00:00:00Sensors are *not* heated during the winter.2008-01-09 14:36:00
2009-10-29 09:00:002009-10-29 12:15:00Replaced Met One anemometer at 38m msl (cups broken), Changed HMP45C (Vaisala) air temperature/relative humidity probe for calibration purposes MET ONE, Changed CS106 (Vaisala) barometric pressure sensor (32m msl) for calibration purposes, Changed (2) 12V deep cycle batteries, Visually inspected all other instruments and checked instantaneous data values to see if they were within normal ranges, Changed desiccant packs, 2010-05-14 10:18:00
2009-09-24 10:15:002009-10-03 11:00:00unexpected data loss2009-11-03 18:08:00
2008-09-14 00:30:002011-07-25 10:00:00Pending. At the 38 meter level, nullify MetOne wind speed from 9/14/08 at 00:30 EST until further notice.2009-08-04 16:01:00
2008-09-08 06:15:000000-00-00 00:00:00Pending. At the 32 meter level, nullify MetOne wind speed from 9/8/08 at 6:15 EST until further notice.2009-08-04 16:00:00
2008-07-11 07:15:002008-07-11 09:45:00Station Maintence2008-07-22 14:51:00
2008-07-11 07:15:002008-07-11 08:45:00Station Maintence2008-07-22 14:50:00
2008-01-22 18:30:002008-07-11 07:15:00Outage2008-07-08 09:58:00
2008-01-22 18:30:002008-07-11 07:15:00Outage2008-07-07 18:42:00
2008-01-19 17:30:002008-07-11 07:15:00Outage2008-07-08 10:03:00
2008-01-17 16:45:002008-07-11 07:15:00It appears we might be experiencing an icing event out at Colchester Reef. At 16:45 yesterday afternoon (Thur) wind speed suddenly dropped from an average ws of 12 m/s to zero in one 15 minute period. A second explanation would be actual damage to the anemometer. Relative humidity is 95% or higher at both levels and currently it is the lower level (32m) that is reading over 100%. I would suggest we take these values with a grain of salt until things (hopefully) return to normal. The new NRG anemometer installed this summer (data in cols 23-28 of the data file) still appears to be working and outputting both ws & direction. Wind direction is measured by the same NRG wind vane regardless of which anemometer is used for ws.2008-02-02 11:32:00
2007-10-30 08:30:000000-00-00 00:00:00Pending. Rain gage closed for the winter, but it has continued to fail since re-opening.2008-01-17 16:30:00
2007-10-23 16:45:002007-10-25 14:15:00Nullify relative humidity (at both 33.5 & 38 m); 10/23/07 16:45 - 10/25/07 14:15 EST); sensors still effected, possibly by extreme rain event.2008-01-31 13:31:00
2007-10-23 16:45:002007-10-24 19:45:00Nullify air temperature (at both 33.5 & 38 m), barometric pressure, water temperature, pyranometer, & battery voltage (10/23/07 16:45 - 10/24/07 19:45 EST) data inaccurate - suspect air temp/RH sensors got wet in driving rain event2008-01-31 13:28:00
2007-09-09 00:00:002007-10-30 08:30:00Rain gage clogged; nullify data for this time period (9/9/07 0:00 - 10/30/07 8:30 EST).2008-01-31 13:24:00
2007-08-27 00:00:002007-08-27 23:45:00Added NRG anemometer; changed pyranometer, BP and both temp&RH sensors and battery. Water T still broken.2008-01-31 13:15:00
2007-05-07 00:00:002007-05-07 23:45:00Changed VMC and Eric Miller wind anemometers.2008-01-31 13:05:00
2007-02-07 06:00:002007-10-16 12:00:00We have stopped recieveing data from Colchester Reef as of 2/7/07 at 6am. We do not know why but repairs cannot be done until the spring.2007-02-16 10:00:00
2007-01-13 04:00:002007-05-07 09:45:00Max wind speed instrument damaged2007-06-12 11:39:00
2007-01-13 04:00:002007-05-07 09:45:00MAXWINDSPEED Nullified due to equipment failure2007-05-29 13:37:00
2007-01-09 00:00:002007-05-07 09:45:00instrument possibly frozen or clogged2007-06-12 12:27:00
2006-12-08 07:00:002007-09-05 00:00:00Water temperature sensor malfunctioning 12/8/06 0700 EST until 9/5/07 when it was replaced2007-06-12 11:33:00
2006-12-06 23:30:002007-05-07 09:45:00Wind instrument possibly frozen at times2007-06-12 12:35:00
2006-10-09 00:00:002007-05-07 00:00:00Rain gage not actually covered (closed for season) but date that data should be nullifed to for Fall 2006 to Spring 20072007-12-12 12:20:00
2006-07-19 00:00:002006-07-19 00:00:00Changed air temperature/relative humidity sensor at 38 m; added air temperature/relative humidity, and wind sensors at 33.5 m.2007-02-13 17:36:00
2006-06-19 00:00:002006-08-10 00:00:00Set RH and Air temp to null DOY 170 (6/19/2006) through DOY 222 (8/10/2006) (equipment failure)2007-12-12 12:16:00
2006-06-19 00:00:002006-08-10 00:00:00Set RH and Air temp to null DOY 170 (6/19/2006) through DOY 222 (8/10/2006) (equipment failure).2007-02-13 17:36:00
2005-10-21 09:15:002006-05-16 08:30:00Close rain gage for season 10/21/05 9:15 AM EST (8:15 DST); set precip to null till spring. Open rain gage for season May 16, 2006 at ~8:30 AM EST2007-12-12 12:11:00
2005-07-29 00:00:002005-10-21 00:00:00Rain gage blocked; precip data set to null from 7/29/05-10/20/052007-12-12 12:13:00
2005-07-29 00:00:002005-10-21 00:00:00Rain gage blocked; precip data set to null from 7/29/05-10/20/05. changed date to match log.2007-02-13 17:36:00
2005-07-12 00:00:002005-07-12 00:00:00Changed Temp&RH probe and pyranometer.2008-01-31 12:37:00
2004-09-20 10:00:002005-05-05 08:30:00Covered rain gage 9/20/2004 approx 11.00 a.m. DST. See 8/30/04 for date data set to null.2007-12-12 11:57:00
2004-08-30 10:45:002004-09-20 10:00:00Set precip data to null from estimated date of blockage = 8/30/2004 10.45 am EST2007-02-13 17:36:00
2003-04-11 00:00:002003-05-08 00:00:00Battery down, no data collected; ice had destroyed solar panel, pyranometer mount, and yagi antenna; Battery replaced 4/30/2003. Damage to pyranometer found April 30; replaced parts May 8th, 2003.2008-01-30 16:48:00
2002-10-09 00:00:002002-10-09 00:00:00Anemometer and wind direction vane replaced2008-01-30 16:42:00
2002-08-20 09:15:002002-08-20 09:15:00Deleted Baro Press DOY 226 hr/min 915. Flag.2007-02-13 17:36:00
2002-08-14 08:15:002002-08-14 09:15:00Deleted all fields DOY 226 (8/14/02) hr/min 815-915 (sensors rewired). Data restored. Temperature, relative humidity barometric pressure and pyranometer sensors replaced for calibration.2007-02-13 17:36:00
2001-10-11 00:00:002001-10-26 00:00:00Data logger battery died. Data missing DOY 284 (10/11/01) 1500 - DOY 286 0100; DOY 286 0200 - DOY 297 0900 (10/24/01). Data restored.2007-02-13 17:35:00
2000-11-26 14:15:002000-11-27 06:00:00Data missing for unknown reasons 11/26/2000 2:15 PM - 11/27/2000 0600 AM2008-01-29 15:37:00
2000-11-07 10:15:002000-11-08 08:00:00Data missing for unknown reasons 11/7/2000 1015 AM - 11/8/2000 0800 AM2008-01-29 15:36:00
2000-10-07 03:15:002000-10-09 05:00:00Data missing for unknown reasons 10/7/2000 0315 AM - 10/9/2000 0500 AM2008-01-29 15:35:00
2000-09-29 09:15:002000-10-02 05:00:00Data missing for unknown reasons 9/29/2000 0915 AM - 10/2/2000 0500 AM2008-01-29 15:34:00
2000-09-22 05:15:002000-09-25 07:00:00Data missing for unknown reasons 9/26/2000 12:15 PM - 9/27/2000 0800 AM2008-01-29 15:32:00
2000-09-20 03:15:002000-09-21 06:00:00Data missing for unknown reasons 9/20/2000 0315 AM - 9/21/2000 0600 AM2008-01-29 15:30:00
2000-09-16 03:15:002000-09-18 05:00:00Data missing for unknown reasons 9/16/2000 0315 AM - 9/18/2000 0500 AM2008-01-29 15:29:00
2000-09-09 12:15:002000-09-11 07:00:00Data missing for unknown reasons 9/9/2000 12:15 PM - 9/11/2000 0700 AM2008-01-29 15:27:00
2000-07-17 01:00:002000-07-21 02:15:00Anemometer only sending data logger offset numbers July 17 2000 [end 1/18/2000 6:15 AM]Anemometer functional as of 3.00 p.m. June 9 2000 (see 11/13/99 note). Wind instruments replaced using NRG instruments rather than the R.M. Young previously used2008-01-17 17:06:00
2000-07-11 14:15:002000-07-12 04:00:00No records 7/11/2000 2:15 PM (1415) through 7/12/2000 0400 AM. Appears to be human error.2008-01-29 15:14:00
2000-06-26 00:00:002000-06-26 00:00:00Temperature, relative humidity, barometric pressure and pyranometer sensors replaced for calibration2008-01-29 15:38:00
2000-05-11 00:00:002000-05-17 00:00:00Nullified water temperature data between 5/11/00 and 5/17/00. Temp sensor was out but not disconnected2007-02-13 17:33:00
2000-01-17 00:00:002000-07-21 14:15:00Anemometer only sending data logger offset numbers July 17 2000'. Anemometer stopped sending output 7/18/00 11:15 AM - 7/21/00 1:00 PM due to lightning strike.Anemometer functional as of 14.15 DST July 21 20002008-01-29 15:16:00
2000-01-15 00:00:002000-01-18 06:15:00data missing for part of 1/15 to 1/18 6:15. Flag.2000-02-03 00:00:00
2000-01-15 00:00:002000-01-18 00:00:00Data Missing. Reason UNK2008-01-17 17:12:00
1999-11-12 14:15:002000-06-09 15:15:00All wind data parameters should be nullified from November 12, 1999 at 14:15 EST until June 9, 2000 (when wind data reappears). The RM Young anemometer was apparently lost (blown away) sometime between Nov 12-13, 1999. This fact was visually verified on December 3, 1999. The anemometer was replaced on June 9, 2000 using an anemometer with separate wind vane donated by NRG of Hinesburg, VT. The new anemometer stopped working on July 18, 2000, possibly due to a lightning strike, and was replaced with another unit on July 21, 2000.2008-02-01 19:25:00
1999-09-17 00:00:002000-05-17 00:00:00Water temperature sensor broken (probably by Hurrican Floyd) early a.m. Sept.17 19991999-09-17 00:00:00
1999-08-19 00:00:001999-09-16 08:15:00Anemometer found broken (probably by cormorants) 8/19/99. Anemometer functional as of 8.15 a.m. Sept. 16 1999.1999-08-19 00:00:00
1999-07-06 12:15:001999-08-19 08:30:00Water temperature out starting 12.15 a.m. July 6 1999 (instrument damaged by high winds).Water temperature sensor replaced 8.30 a.m. 8/19/99.1999-07-06 00:00:00
1999-06-29 09:30:001999-06-29 09:30:00Water temperature sensor replaced 9.30 a.m. 6/29/991999-06-29 00:00:00
1999-06-01 17:15:001999-06-11 11:00:00Wind data invalid from 5.15 p.m. EST June 1 1999 to 11.00 a.m. EST June 11 1999'1999-06-24 00:00:00
1999-01-01 00:00:001999-05-24 00:00:00Deleted wind data from 1/1/99 to present (5/24/99)1999-05-24 00:00:00
1997-01-01 00:00:001997-01-01 00:00:00Blank data fields indicate missing data and "null" indicates values removed for QA/QC purposes. Strings of zeros or no data at all indicate missing data2007-02-13 16:57:00