Hubbard Brook Experimental Forest (US Forest Service): Wind Speed and Wind Direction Measurements, 1965 - present
TITLE
Hubbard Brook Experimental Forest (US Forest Service): Wind Speed and Wind Direction Measurements, 1965 - present
PRINCIPAL INVESTIGATOR(s)
Amey Bailey
USDA Forest Service, Hubbard Brook Experimental Forest
234 Mirror Lake Road
North Woodstock, NH 03262
USA

Phone: (603) 726-8902
ABSTRACT:
Wind data have been measured by an anemometer mounted 3 m above the ground at Hubbard Brook Experimental Forest Headquarters since 1965. Prior to 1981, every mile of wind movement caused a tick mark on a strip-chart recorder, and wind direction as N, S, E, W, or a combination, was recorded continuously. Since 1981, wind speed and direction have been collected by an automatic data logger system. In 2004, a R.M. Young company wind speed direction sensor (model 05103) was installed. Since that time wind direction (azimuth) are based on a 0 to 360 degree scale.
KEYWORD SET: Hubbard Brook Ecosystem Study LTER
climate, forests, HBR, Hubbard Brook LTER, weather, wind, wind speed, wind direction.
BEGIN DATE
1965-10-27
END DATE
2009-12-31
LOCATION
Hubbard Brook Headquarters building
West bounding coordinate: -71.700975
East bounding coordinate: -71.700975
North bounding coordinate: 43.945733
South bounding coordinate: 43.945733
Elevation
Minimum: 830
Maximum: 830
(Unit: foot)
DATA DESCRIPTION
Wind data have been measured by an anemometer mounted 3 m above the ground at HBEF Headquarters during various time periods since 1965. The anemometer and wind vane system was run at Headquarters from October 27, 1965 through July 22, 1981. Before 1981, every mile of wind movement caused a tick mark on a strip-chart recorder, and wind direction as N, S, E, W, or a combination, was recorded continuously. Since 1981, wind speed and direction have been collected by the automatic data logger system at Headquarters. In 2004, a R.M. Young company wind speed direction sensor (model 05103) was installed. Since that time wind direction (azimuth) are based on a 0 to 360 degree scale.
SAMPLING DESIGN
From October 26, 1965 through July 22, 1981, an anemometer and wind vane system was run at HBEF Headquarters. Data were recorded on a strip chart recorder, with a mark for each mile of movement, and direction given by the ON position of four pens, for S, W, N, and E. The charts have been read only for the periods October 1965 to August 1967, and April 1971 to June 1973, and are therefore the only data currently available prior to 1981. Missing data occurs for various reasons: out of ink, bad sensor switches, power supply problems, etc. Gaps vary from a few hours to many months. Beginning in 1981, wind speed and direction were included in the automatic data logger system at Headquarters. An additional, totalizing, anemometer is read every working day at 8:00 a.m. For many years these data were noted on the wind speed and direction strip chart, so access requires unrolling those charts. Since 1981 the data are on paper and have not been digitized, except for the purpose of filling missing values. Undocumented wind charts are in the process of being read and added to the data base. Missing data after 1981 is due to datalogger malfunctions.
REFERENCES
  • Bailey, A.S., Hornbeck, J.W., Campbell, J.L., and Eagar, C. 2003. Hydrometeorological database for Hubbard Brook Experimental Forest: 1955-2000. Gen. Tech. Rep. NE-305. 36 pp.Newtown Square, PA., U.S., USDA Forest Service Northeastern Research Station.
  • Molloy, J. 2013. An Analysis of the Sublimation at Hubbard Brook Experimental Forest. Masters of Science, Plymouth State University.
DATA ACCESS GUIDELINES
Data Use Policy



The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, government or other not-for-profit professional purposes.

2) Redistribution. The data and metadata are provided for use by the Data User. The Data User will not redistribute the original Data Set or metadata to others without the explicit permission of the Principal Investigator.

3) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly attribute the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier.

Citation example: Holmes, R.T. 2012. Bird Abundances at Hubbard Brook (1969-2010) and on three replicate plots (1986-2000) in the White Mountain National Forest. Durham, NH. Hubbard Brook Data Archive [Database]. http://hubbardbrook.org/data/dataset.php?id=81 (23 July 2012)

4) Acknowledgment: The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed to its content. Acknowledgments should identify the supporting party, the party that received the support, and any identifying information such as grant numbers.

Acknowledgment example: Data on [topic] were provided by [name of PI] on [date]. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station, Newtown Square, PA. Significant funding for collection of these data was provided by [agency]-[grant number], [agency]-[grant number], etc.

5) Consultation and questions. Data users are strongly encouraged to consult with the Principal Investigator(s) who collected these data for further information. Also, when appropriate, Data Users should consider including the Principal Investigator as a collaborator and/or co-author in the use of these data.

6) Notification. The Data User will notify the Principal Investigator of any publication or derivative work based on the Data Set. The Data User will also provide the Principal Investigator and/or the administrator of the Hubbard Brook Ecosystem Study with a pdf or two reprints of any publication(s) resulting from use of the Data Set.

7) Disclaimer. While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

8) Terms of Agreement. By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.



CONTACT PERSON

Information Manager, Hubbard Brook LTER
234 Mirror Lake Road
North Woodstock, NH 03262
USA

Phone: (603) 726-8902
Email: hbr-im@lternet.edu

Data file: wind.txt
Description: Wind speed and direction data at Hubbard Brook Experimental Forest LTER
Notes on Data: NOTES The primary cause of lost data has been lightning damage to the anemometer reed switch. On some dates, the wind speed was measured but the direction was not due to malfuntioning equipment. Ideally, the sum of wind direction values should be equal to the total wind speed. Total wind speed values flagged with the letter "e" are estimated using data from the totalizing anemometer. Over weekends, estimated daily values are the same for 3 consecutive days. The data is physically located at the USDA Forest Service, Durham, NH and was last updated in 2013.
ColumnVariableDescriptionUnitsCoded?Missing value label
1DATESample dateYYYY-MM-DDnnone
2TOTALTotal wind speedkilometerPerDayn
-99
3SSouth wind speedkilometerPerDayn
-99
4WWest wind speedkilometerPerDayn
-99
5NNorth wind speedkilometerPerDayn
-99
6EEast wind speedkilometerPerDayn
-99
7DEG360Wind direction (azimuth)degreen
-99.0
8FLAGFlagnoneynone

CODES

Variable: FLAG
Code
Description
e
Estimated from totalizing anemometer
-99
No flag present

MISSING VALUE CODES
Variable
Missing Value Code
Code Explanation
TOTAL
-99
missing value
S
-99
missing value
W
-99
missing value
N
-99
missing value
E
-99
missing value
DEG360
-99.0
missing value