Santee Experimental Forest, Watershed 80 Tower 15-Minute Weather Data, 2010-2017.

Metadata:

Identification_Information
Data_Quality_Information
Entity_and_Attribute_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Amatya, Devendra M. and Trettin, Carl C.
Publication_Date: 2018
Title:
Geospatial_Data_Presentation_Form: database

Description:

Abstract:: A suite of climatic variables were measured and recorded (15-minute recording interval) by the Campbell Scientific CR1000 datalogger and associated sensors installed in March 2010 on the 90-foot above-canopy tower erected in January 2010 in Watershed 80 on the Santee Experimental Forest. An NR-LITE net radiometer was added to the array of sensors in September 2010, and the LI-200X solar radiation sensor was replaced by an Apogee SP-110 pyranometer in October 2014. The HMP45C temperature and relative humidity sensor was replaced by a Rotronic HC2S3 sensor in April 2017.
Purpose:: The purpose of the data set is to provide researchers with 15-minute measurements for a suite of climatic variables collected above the forest canopy using a Tower weather station, located in the first-order Watershed 80 (the control watershed in a set of paired first-order watersheds, 77 and 80) on the Santee Experimental Forest.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2010
Ending_Date: 2017

Currentness_Reference:

ground condition

Status:

Progress: In work
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

The geographic area covered by the dataset is the WS 80 Tower weather station, located in Watershed 80 on the Santee Experimental Forest.

Bounding_Coordinates:

West_Bounding_Coordinate: -79.80355
East_Bounding_Coordinate: -79.78340
North_Bounding_Coordinate: 33.15951
South_Bounding_Coordinate: 33.14211

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Forested watersheds
Theme_Keyword: Solar radiation
Theme_Keyword: Net radiation
Theme_Keyword: Photosynthetically-active radiation (PAR)
Theme_Keyword: Wind speed
Theme_Keyword: Wind direction
Theme_Keyword: Air Temperature
Theme_Keyword: Soil Temperature
Theme_Keyword: Vapor pressure
Theme_Keyword: Relative humidity

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: South Carolina
Place_Keyword: Coastal Plain
Place_Keyword: Santee Experimental Forest
Place_Keyword: Watershed 80

Access_Constraints: None

Use_Constraints:

These data were collected by USDA Forest Service researchers. In order to use the data in a publication, presentation or other research product you must agree to acknowledge its source. Please use the reference below when citing this work:

(Data name) courtesy of the USDA Forest Service Center for Forested Wetlands Research.

The following statement may be added after an acknowledgement or credit:

The USDA Forest Service Center for Forested Wetlands Research homepage is http://www.srs.fs.usda.gov/charleston/.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: A suite of climatic variables were recorded electronically on a 15-minute interval by sensors located 90 ft above the forest canopy and linked to a Campbell Scientific CR1000 datalogger.

Logical_Consistency_Report:

Visual inspection of electronically plotted data and comparison with related data from various SEF stations were employed to expose anomalous values.

Completeness_Report:

Periods of missing data include the following:

Windspeed data (all values for variables "Windspeed_" and "Wind_direc") missing for the following periods:

3/21/10 23:45 to 3/24/10 12:00
8/13/10 16:45 to 9/16/10 13:00
9/29/10 17:00 to 10/7/10 12:15
10/27/10 3:15 to 11/23/10 12:00
8/29/11 15:30 to 9/27/11 12:45
10/10/11 6:45 to 11/7/11 12:30
8/8/13 9:30 to 9/4/13 11:15
8/13/15 10:15 to 9/3/15 9:15
8/2/17 9:30 to 8/23/17 10:00

Solar radiation and PAR data (variables "Ave_solar" and "Ave_PAR") missing for the following periods:

8/13/10 16:45 to 9/16/10 13:00
10/29/10 8:45 to 9:15
11/23/10 11:30 to 12:00
8/29/11 15:30 to 10/3/11 14:15
10/22/14 9:30 to 10/22/14 11:30

Soil temperature data missing for the following period:

8/29/11 15:30 to 8/30/11 14:00

Net radiation data not available until 9/16/10 14:15, then missing for the following periods:

10/14/11 9:15 to 11/22/11 11:15
1/23/13 14:15 to 2/28/13 13:45
4/21/15 9:15 to 6/4/15 12:45
5/31/17 10:15 to 6/30/17 10:00

Air temperature, relative humidity and vapor pressure data missing for the following periods:

7/19/12 9:30 to 8/8/12 9:30
10/22/14 9:30 to 11/13/14 11:30
11/18/15 10:45 to 12/29/15 11:30
1/11/17 14:15 to 2/2/17 11:45
10/11/17 10:15 to 11/7/17 13:45

Air temperature, relative humidity, vapor pressure, solar radiation and PAR data missing from 7/17/13 9:15 to 8/8/13 12:30.

Solar radiation data missing for the following time points:

4/29/2015 11:45
5/1/2015 13:00
5/9/2015 13:00
5/13/2015 13:00
8/31/2015 12:00
6/8/16 9:15 to 6/24/16 10:30

PAR data missing for the following periods:

8/13/15 10:15 to 9/3/15 11:30
8/2/17 9:30 to 8/23/17 10:30

Suspect relative humidity data removed from 3/21/17 0:15 to 4/21/17 9:30.

Wind direction data missing on 11/1/17 10:00.

All data missing during the following periods:

4/20/16 13:45
10/4/16 13:00 to 13:30
10/8/16 14:00

Lineage:

Methodology:

Methodology_Type: Field
Methodology_Description:: Averages for a suite of climatic variables were recorded electronically on a 15-minute interval (30 second scan interval) by sensors located 90 ft above the forest canopy and linked to a Campbell Scientific CR1000 datalogger at the foot of the tower. Data was downloaded directly to a laptop computer using PC400 software.

Sensors installed with the CR1000 datalogger included: HMP45C temperature and relative humidity probe (26.0 m height from ground); Met One 34B windset (26.4 m height from ground); LI-COR LI200X pyranometer (26.3 m height from ground); LI-COR LI190SB quantum sensor (26.3 m height from ground); NR-LITE net radiometer (26.27 m height from ground); and a Campbell Scientific 107-L soil temperature sensor (0.10 m below ground surface).

The LICOR LI200X pyranometer was replaced by an Apogee SP-110 pyranometer on 10/22/14.

Replaced NP-12 battery on 4/20/16 and on 11/8/16.

The HMP45C temperature and relative humidity sensor was replaced by a Rotronic HC2S3 sensor on 4/21/17 because of apparent problems with the relative humidity readings.

Replaced NP-12 battery on 11/2/17.

Process_Step:

Process_Description:: Electronic data were downloaded from the CR1000 datalogger and plotted to check for outliers.
Process_Date: Unknown

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:: Variables included in the dataset WS80_Tower_2010_rev.xlsx, WS80_Tower_2011.xlsx, WS80_Tower_2012.xlsx, WS80_Tower_2013.xlsx, WS80_Tower_2014.xlsx, WS80_Tower_2015.xlsx, WS80_Tower_2016.xlsx, and WS80_Tower_2017.xlsx:

Location = weather station location (WS80 = Watershed 80);
Instr_ID = weather station name (Tower = WS80 Tower weather station);
Date_time_ = instantaneous date and time that data were recorded (format MM/DD/YYYY HH:MM);
Date_instant = date associated with instantaneous data (format MM/DD/YYYY);
Time24_instant = nearest quarter hour associated with instantaneous data (0 to 23.75);
Date_ave = date associated with averaged/totalled/maximum/minimum data (format MM/DD/YYYY HH:MM);
Time24_ave = nearest quarter hour associated with averaged/totalled/maximum/minimum data (0.25 to 24);
Air_air_T (alias 'AverageAirTemperature') = 15 minute average air temperature, in degrees Celsius;
Max_air_T (alias 'MaximumAirTemperature') = 15 minute maximum air temperature, in degrees Celsius;
Min_air_T (alias 'MinimumAirTemperature') = 15 minute minimum air temperature, in degrees Celsius;
RH (alias 'RelativeHumidity') = 15 minute average relative humidity, as a fraction;
Max_RH (alias 'MaximumRelativeHumidity') = 15 minute maximum relative humidity, as a fraction;
Min_RH (alias 'MinimumRelativeHumidity') = 15 minute minimum relative humidity, as a fraction;
Ave_vapor_ (alias 'AverageVaporPressure') = calculated 15 minute average vapor pressure, in kPa;
Ave_Soil_T (alias 'AverageSoilTemperature') = 15 minute average soil temperature, in degrees Celsius;
Ave_PAR (alias 'AveragePAR') = 15 minute average photosynthetically active radiation (PAR), in micromoles per m2 per sec;
Ave_solar (alias 'AverageSolarRadiation') = 15 minute average solar radiation, in kilowatts per m2;
Windspeed_ (alias 'AverageWindspeed') = 15 minute average wind speed, in m per sec;
Wind_direc (alias 'AverageWindDirection') = 15 minute wind direction vector, in degrees;
Cor_Netrad (alias 'AverageCorrNetRadiation') = 15 minute average net radiation (windspeed corrected), in Watts per m2; and
Sample_Int = sample interval (in hours).

All missing data were originally assigned the value "-9999"; during database development this code was changed to "null"
Entity_and_Attribute_Detail_Citation:: None

Metadata_Reference_Information:

Metadata_Date: 20180717

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA Forest Service, Southern Research Station, Center for Forested Wetlands Research
Contact_Person: Andy Harrison

Contact_Position: Hydrology Technician

Contact_Address:

Address_Type: mailing and physical
Address: 3734 Hwy 402
City: Cordesville
State_or_Province: SC
Postal_Code: 29434
Country: USA

Contact_Voice_Telephone: 843 336-5603

Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001.1-1999