General Information
|
Title: | C. Hart Merriam Climate Station Hourly RAW Data |
Identifier: | paullheinrich.27.2 |
Abstract: |
This dataset contains hourly observations of several Parameters from all five C. Hart Merriam Elevation Gradient stations. All of the data is available online in a MySQL database which can be accessed from a webpage (http://cpbc.bio.nau.edu/gradient_weather_data/default.aspx) or by direct connection (contact Paul.Heinrich@nau.edu for access. The following parameters are recorded for each site:
precipitation, air temperature, releative humidity, solar radiation, soil temperature at 3 depths, soil moisture at 2 or 3 depths depending on the site, wind speed and wind direction.
|
Keywords: |
- precipitation
- elevation gradient
- C. Hart Merriam
- air temperature, relative humidity, wind speed, wind direction, soil temperature, soil moisture, solar radiation
|
|
|
Involved Parties
Data Set Creators
|
Individual: | Mr. Paul Heinrich |
Organization: | Merriam-Powell Center for Environmental Research |
Position: | IT Manager |
Address: |
Northern Arizona University, |
800 South Beaver Street, Peterson Hall Room 330, |
Flagstaff, AZ 86011 USA |
|
Phone:
|
|
Email Address:
|
|
Web Address:
|
|
|
Data Set Contacts
|
Individual: | Mr. Paul Heinrich |
Organization: | Merriam-Powell Center for Environmental Research |
Position: | IT Manager |
Address: |
Northern Arizona University, |
800 South Beaver Street, Peterson Hall Room 330, |
Flagstaff, AZ 86011 USA |
|
Phone:
|
|
Email Address:
|
|
Web Address:
|
|
|
Associated Parties
|
Individual: | Dr. Bruce Hungate |
Organization: | Northern Arizona University - Ecosystem Science and Society Center |
Position: | Professor |
Address: |
Northern Arizona University, |
PO Box 5640, Building 21, |
Flagstaff, AZ 86011 USA |
|
Phone:
|
|
Email Address:
|
|
Web Address:
|
|
|
Individual: | Dr. Amy Whipple |
Organization: | Northern Arizona University - Merriam-Powell Center for Environmental Research |
Position: | Director - Merriam-Powell Research Station |
Address: |
800 South Beaver Street, Room 330, |
POB 6077, |
Flagstaff, AZ 86011 USA |
|
Phone:
|
|
Email Address:
|
|
Web Address:
|
|
|
Individual: | Dr. Neil Cobb |
Organization: | Northern Arizona University - Merriam Powell Center for Environmental Research |
Position: | Director |
Address: |
800 South Beaver Stree, Room 330, |
POB 6077, |
Flagstaff, AZ 86011 USA |
|
Phone:
|
|
Email Address:
|
|
|
Data Set Characteristics
Geographic Region: |
Geographic Description: | The C. Hart Merriam Elevation Gradient is a network of five permanent research sites arrayed along a 1100 meter gradient in northern Arizona. The gradient provides habitat types from Great Basin Desert to Mixed-Conifer Forest and is located just north of the San Francisco Peaks and Flagstaff, Arizona. |
Bounding Coordinates:
|
West: | -111.73061 degrees
|
East: | -111.42651 degrees
|
North: | 35.6927 degrees
|
South: | 35.35393 degrees
|
|
|
|
|
Sampling, Processing and Quality Control Methods
Step by Step Procedures
|
Step 1: |
|
Description:
|
Weather Data / Instrumentation
A Weather (Met) station is located at each of the five study sites along the C. Hart Merriam Elevation Gradient transect. Each of these stations is located in the middle of a life zone along the north side of the San Francisco Peaks. All data will be made publicly available immediately; our goal is to provide real-time data through our website. The weather stations are fully automatic. They measure wind speed and wind direction, total solar radiation, soil temperature (2 depths), precipitation, soil water content, and relative humidity (RH). Measurements are taken every 15 seconds and an average will be collected every hour as well every 24 hours to get the maximum and minimum of most of the variables. The information is processed to obtain parameters such as ASCE Standard Reference Evapotranspiration (mm per day) as well as heat and chill units. A water balance will be calculated for each site. All the information in the future will be collected by satellite and will be available over the Internet. The weather stations consist of the following components:
During the winter of 2010-2011 we have been updating the hardware and software for our stations. This update is supported by NSF Grant # DBI-0934398 titled "Enhancing the Merriam-Powell Research Station to support Climate Change Research and Education". Four of the five sites now have real-time displays. We are waiting on a USFS permit to add a relay site to bring data back from the Pinyon-Juniper site. Sites with real-time displays also have their data being automatically entered into a MySQL database. This data will be available for download in the near future. see http://nau.edu/Merriam-Powell/Project-Websites/ for details
This database currently inlcudes data since January 2010. We plan to intergrate older observations as time permits.
|
Instrument(s):
| Campbell Scientific CR-10x and CR-1000 based weather stations |
Instrument(s):
| Pyranometer. LI200S Pyranometer measures solar (i.e., short wave) radiation received from a whole hemisphere. It is suitable to measure sun plus sky radiation. It is a silicon photo diode with a spectral response from 280-2800 nm. |
Instrument(s):
| Temperature and relative humidity. The HMP45C has a capacitive relative humidity sensor and a thermistor housed in a radiation shield. The relative humidity sensor can measure between 0 and 100 % of relative humidity. The accuracy is about +2% RH form 0 to 90% RH and +3% RH form 90 to 100% RH. |
Instrument(s):
| A second air temperature measurment is taken using a thermocouple placed in the HMP45C Gill Radiation Shield for redundancy. The addition of this sensor will allow us to better dectect faults in the HMP45C.(added Winter 2010-2011) |
Instrument(s):
| Tipping Bucket Rain Gauge. The TE425 is a standard Weather Bureau tipping bucket rain gauge. The TE525 has a resolution (i.e., one tip capacity) of 0.1 mm of rain. |
Instrument(s):
| Geonor T200B Vibrating-wire Rain Gauge. The T200B measures the weight of precipitation falling into it's bucket. Because of this it is able to accurately measure frozen precipitation (snow and hail) which the tipping bucket does not measure accurately. Our T200B reports precipitation in millimeters of water equivalent. With the addion of this instrument we are now able to accurately measure precipitation in all weather. The T200B has a resolution of 0.1mm of precipitation and a capacity of 600mm between servicings. (added Winter 2010-2011) |
Instrument(s):
| Wind Speed and Wind Direction. A Met One Windset at each weather station has both an anemometer (wind speed) and vane (wind direction). The range is 0 to 49 m s-1. The wind direction is measured with a precision plastic potentiometer that can produce readings between 0 and 360 degrees. (Windsets replaced Winter 2010-2011) |
Instrument(s):
| Soil Temperature is measured at 5, 10 and 15cm below the surface using Campbell Scientific 108 or 107 thermistor sensors. (at all sites as of Winter 2010-2011) |
Instrument(s):
| Soil Volumetric Water Content is measured using Campbell Scientific 616 sensors at 0-15, 0-30 and 30-60cm (Mixed-Conifer site only) below ground. |
|
Data Set Usage Rights
Merriam-Powell Center for Environmental Research Data Access Policy, Data Access Requirements, and General Data Use Agreement
This data policy document is based on the Long Term Environmental Research (LTER) Network data policy approved by the LTER Coordinating Committee April 6, 2005
Merriam-Powell Center for Environmental Research (MPCER) Data Access Policy
The MPCER data policy includes three specific sections designed to express shared network policies regarding the release of MPCER data products, user registration for accessing data, and the licensing agreements specifying the conditions for data use.
MPCER Data Release Policy
Data and information derived from publicly funded research, totally or partially from MPCER funds from NSF, Institutional Cost-Share, or Partner Agency or Institution where a formal memorandum of understanding with MPCER has been established, are made available online with as few restrictions as possible, on a nondiscriminatory basis. MPCER scientists should make every effort to release data in a timely fashion and with attention to accurate and complete metadata.
Data
There are two data types:
Type I â data are to be released to the general public according to the terms of the general data use agreement (see Section 3 below) within 2 years from collection and no later than the publication of the main findings from the dataset and,
Type II - data are to be released to restricted audiences according to terms specified by the owners of the data. Type II data are considered to be exceptional and should be rare in occurrence. The justification for exceptions must be well documented and approved by the lead PI and MPCER Data Manager (Paul Heinrich). Some examples of Type II data restrictions may include: locations of rare or endangered species, data that are covered under prior licensing or copyright (e.g., SPOT satellite data), or covered by the Human Subjects Act. Researchers that make use of Type II Data may be subject to additional restrictions to protect any applicable commercial or confidentiality interests.
While the spirit of this document is to promote maximum availability for ecological data in either Type I or II status, there are criteria by which priority for data release may be determined. Primary observations collected for core research activities directly supported by MPCER research must receive the highest priority for data release. Data collected by other sources to which MPCER supported research has added value is also a high priority Other types of data including non-MPCER data that was acquired for MPCER research, student thesis data, schoolyard MPCER data, or legacy data that already suffer from inadequate documentation or format obsolescence may be ranked a lower priority by a site with justifications provided in their data management policy. Finally, some data may be determined of lowest priority for archiving on the grounds that they are interim data that led to final products that carry the scientific value. These might include data files created during stages within an analytic workflow, raw or replicate data values that were subsequently aggregated or processed for release, or individual outputs from stochastic models.
Metadata
1. Metadata documenting archived/online data sets of all types listed above will be made available when, or before, the dataset itself is released according to the terms above.
2. All metadata will be publicly available regardless of any restrictions on access to the data.
3. All metadata will follow MPCER recommended standards and will minimally contain adequate information on proper citation, access, contact information, and discovery. Complete information including methods, structure, semantics, and quality control/assurance is expected for most datasets and is strongly encouraged. Whenever possible Federal Geographic Data Committee standard metadata will be used.
MPCER Network Data Access Requirements
The access to all MPCER 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 within MPCER to provide contractual exchange of data between 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
1. Name
2. Affiliation
3. Email Address
4. Full Contact Information
⢠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.
Data providers wishing to impose further requirements beyond these are encouraged to include them in their Restricted Data Use Agreements accompanying the datasets.
Data Use Agreements
Datasets released by MPCER will be accompanied with a use agreement that specifies the conditions for data use. For Type I data, this shall be the General Data Use Agreement (see appendix I). This document specifies general roles and the obligations and rights enjoyed by each regarding the use of most dataset released for general public use. For Type II datasets, a Restricted Data Use Agreement must be provided with the dataset that identifies the specific restrictions on the use of the data and their justification. Because these are expected to be unique to the dataset, no template is provided although in most cases the General Data Use Agreement can be modified to serve. Grounds for restricting data may include the need to restrict access to species, habitats or cultural resources protected by legislation; rights of privacy granted by human subjects legislation; or protection of intellectual, financial or legal rights over the data held by a third party.
This policy becomes effective when approved by the MPCER Executive Committee. It may be revised by, or at the request of, the same body.
|
|