John Campbell US Forest Service

271 Mast Rd. Durham NH USA

(603)-868-7643 Hubbard Brook Experimental Forest LTER

U.S. Forest Service 271 Mast Rd. Durham NH 03824 USA

603-868-7643 603-868-7604 http://www.hubbardbrook.org Amey Bailey associated researcher weather climate air temperature temperature mean

Publications using these data from the Hubbard Brook Ecosystem Study must include the following paragraph: Some data used in this publication were obtained by scientists of the Hubbard Brook Ecosystem Study; this publication has not been reviewed by those scientists. The Hubbard Brook Experimental Forest is operated and maintained by the Northeastern Research Station, U.S. Department of Agriculture, Newtown Square, Pennsylvania. Please note that data sharing and availability policy varies among the datasets available. Publishers of Hubbard Brook data are encouraged to contact the original data provider to obtain information for an acknowledgement of the original funding source of the research.

The access to all LTER data is subject to requirements set forth by this policy document to enable data providers to track usage, evaluate its impact in the community, and confirm users' acceptance of the terms of acceptable use. These requirements are standardized across the LTER Network to provide contractual exchange of data between Site Data Providers, Network Data Providers, and Data Users that can be encoded into electronic form and exchanged between computers. This will allow direct access to data via a common portal once these requirements have been fulfilled. The following information may be required directly or by proxy prior to the transference of any data object: Registration Name Affiliation Email address Full Contact Info Acceptance of the General Public Use Agreement or Restricted Data Use Agreement, as applicable A Statement of Intended Use that is compliant with the above agreements. Such statements may be made submitted explicitly or made implicitly via the data access portal interface.

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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.

Data SetDigital data and its metadata derived from any research activity such as field observations, collections, laboratory analysis, experiments, or the post-processing of existing data and identified by a unique identifier issued by a recognized cataloging authority such as a site, university, agency, or other organization. Data Userndividual to whom access has been granted to this Data Set, including his or her immediate collaboration sphere, defined here as the institutions, partners, students and staff with whom the Data User collaborates, and with whom access must be granted, in order to fulfill the Data User's intended use of the Data Set Data Set Creatorindividual or institution that produced the Data Set Data Set Ownerindividual or institution that holds intellectual property rights to the dataset. Note that this may or may not be defined as a legal copyright. If no other party is designated in the metadata as Data Set Owner, it may be presumed that these rights are held by the Data Set Creator. Data Set Distributorindividual or institution providing access to the Data Sets. Data Set Contactparty designated in the accompanying metadata of the Data Set as the primary contact for the Data Set.

http://www.hubbardbrook.org/data/data_policy.php?firstname=metacat&lastname=user&affiliation=Other&view=1&accept=1&comments=none&phone=6035551212&email=none@loopback.com&whichyear=all&target=tdm_all.txt Weather Station 1 -71.725403 -71.725403 43.952332 43.952332 Weather Station 6 -71.736122 -71.736122 43.956898 43.956898 Weather Station 14 -71.766808 -71.766808 43.920692 43.920692 Weather Station 17 -71.75869 -71.75869 43.918678 43.918678 Weather Station 23 -71.747276 -71.747276 43.927158 43.927158 Weather Station 24 -71.749657 -71.749657 43.920189 43.920189 Integrated Plots (INT) Adjacent to Headquarters building (HQ) -71.701859 -71.701859 43.943943 43.943943 1956-01-01 Ongoing Ongoing John Campbell

PO Box 640 Durham NH 03824 USA

(603)-868-7643 jlcampbell@fs.fed.us U.S Forest Service

U.S. Forest Service 271 Mast Rd. Durham NH 03824 USA

603-868-7643 603-868-7604 http://www.hubbardbrook.org Hubbard Brook LTER

Air temperature is currently measured at 8 locations. Six locations are in rain gage openings 1, 6, 14, 17, 23, and 24. One location is Headquarters. The INT station is below the forest canopy (not in an opening) at the integrated plot area, west of weir 4. At each station, air temperature (and usually relative humidity) are recorded by Belfort hygrothermographs housed in standard Stevenson screens, 5 feet off the ground. Each screen also houses a maximum, a minimum, and a standard thermometer. The hygrothermograph charts are changed weekly, at which time the thermometers are read. Daily maximum and minimum temperatures are read manually from the charts. Correction for disagreement with the thermometers are seldom made as agreement is usually within 2 degrees F. The hygrothermographs are readjusted annually to give the daily mean. The daily maximum and minimum temperatures are entered directly into the computer. Maximum and minimum temperatures are converted from Fahrenheit to Celsius and then averaged to give the daily mean.

Daily mean temperatures from up to 8 locations at HBEF have been measured since October, 1955 using mechanical hygrothermographs in weather shelters.

uid=HBR,o=lter,dc=ecoinformatics,dc=org all public read tdm_all Daily mean temperature at Hubbard Brook lter tdm_all.txt ASCII 1 \n\r column 0x2c http://www.hubbardbrook.org/data/data_policy.php?firstname=metacat&lastname=user&affiliation=Other&view=1&accept=1&comments=none&phone=6035551212&email=none@loopback.com&whichyear=all&target=tdm_all.txt

Comparisons among stations should be made with caution because data have not been corrected for possible instrument bias. -99.0 is the missing value when the weather station is not operating. Otherwise if a day is missed, the value for that day has been estimated from values at the other stations. Estimated values are not flagged. The Fahrenheit to Celcius conversion and rounding to whole degrees Centigrade leads to considerable underrepresentation of -5, 0, 5, 10, etc. values.The data is physically located at the USDA Forest Service, Durham, NH and was last updated on August 5, 2002.

DATE Date Sample date YYYYMMDD 1 day 19660101 STA_1 Station 1 Measured at station 1 celsius 1 integer -99 Data missing or not taken at this time STA_6 Station 6 Measured at station 6 celsius 1 integer -99 Data missing or not taken at this time STA_14 Station 14 Measured at station 14 celsius 1 integer -99 Data missing or not taken at this time STA_INT Station 1A Measured at station 1A celsius 1 integer -99 Data missing or not taken at this time STA_HQ HQ Measured at the headquaters building celsius 1 integer -99 Data missing or not taken at this time STA_23 23 Measured at station 23 celsius 1 integer -99 Data missing or not taken at this time STA_17 Station 17 Measured at station 17 celsius 1 integer -99 Data missing or not taken at this time STA_24 Station 24 Measured at station 24 celsius 1 integer -99 Data missing or not taken at this time