Santee Experimental Forest, Santee Headquarters Half-Hourly Weather Data, 2006-2017.

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Amatya, Devendra M. and Trettin, Carl C.
Publication_Date: 2018
Title:
Santee Experimental Forest, Santee Headquarters Half-Hourly Weather Data, 2006-2017.
Geospatial_Data_Presentation_Form: database
Description:
Abstract:
A suite of climatic variables (including average air temperature, wind speed and direction, solar radiation, net radiation, relative humidity, and total precipitation and maximum and minimum relative humidity) were measured and recorded (30-minute recording interval) from 2006-2017 by the Campbell Scientific CR10X datalogger and associated sensors at the Santee Headquarters weather station in Cordesville, SC. The datalogger was programmed to calculate average vapor pressure.

The CR10X datalogger was replaced by a Campbell Scientific CR1000 datalogger on May 25, 2017. On the same date the HMP45C temperature and relative humidity sensor was replaced by an HMP60 sensor. The recording interval was changed from 30 to 15 minutes in the new datalogger program. An RF451 900 MHz 1 W Spread-Spectrum radio and an Omnidirectional antenna were also installed to enable radio transmission of data to a computer in the office. 15-minute vapor pressure and vapor pressure deficit values were calculated using this data according to the FAO (1990) method.
Purpose:
The purpose of the data set is to provide researchers with half-hourly or 15-minute measurements of a suite of climatic variables at the Santee Headquarters weather station, located adjacent to the headquarters offices and laboratories of the Santee Experimental Forest.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2006
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 Santee Headquarters weather station, located adjacent to the headquarters office and laboratories of the Santee Experimental Forest.
Bounding_Coordinates:
West_Bounding_Coordinate: -79.78675
East_Bounding_Coordinate: -79.76231
North_Bounding_Coordinate: 33.14802
South_Bounding_Coordinate: 33.11200
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Forested watersheds
Theme_Keyword: Solar radiation
Theme_Keyword: Net radiation
Theme_Keyword: Wind speed
Theme_Keyword: Wind direction
Theme_Keyword: Air Temperature
Theme_Keyword: Vapor pressure
Theme_Keyword: Relative humidity
Theme_Keyword: Precipitation
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: South Carolina
Place_Keyword: Coastal Plain
Place_Keyword: Santee Experimental Forest
Place_Keyword: Santee Headquarters
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/.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Manual rainfall measurements were made using a 0.20 m (8-inch) diameter National Weather Service (NWS) Standard Rain Gauge with its opening at a height of 0.8 m from the ground. Manual air temperature measurements were made using standard max/min and ambient thermometers (at a height of 1.52 m inside a ventilated wooden enclosure).

A suite of climatic variables were recorded electronically by sensors linked to a Campbell Scientific CR10X datalogger. Rainfall event data recorded by a tipping bucket gauge were calibrated to the total rainfall collected by the adjacent manual gauge between download intervals. Air temperature data were checked against the standard max/min and ambient thermometers.

The CR10X datalogger was replaced by a Campbell Scientific CR1000 datalogger on May 25, 2017. On the same date the HMP45C temperature and relative humidity sensor was replaced by an HMP60 sensor. The recording interval was changed from 30 to 15 minutes in the new datalogger program. An RF451 900 MHz 1 W Spread-Spectrum radio and an Omnidirectional antenna were also installed to enable radio transmission of data to a computer in the office. 15-minute vapor pressure and vapor pressure deficit values were calculated using this data according to the FAO (1990) method.
Logical_Consistency_Report:
Visual inspection of electronically plotted data and comparison with data from other SEF stations were employed to expose anomalous values.
Completeness_Report:
Periods of missing or unreliable data include the following:

PAR, standard deviation of wind direction vector, maximum windspeed and both average and instantaneous evaporation pan level data missing for the entire period.

All data missing from 6/30/06 8:30 to 6/30/06 9:00, 9/18/12 9:30 to 9/21/12 8:30, 8/6/14 3:00 to 8/6/14 7:00 and 5/25/17 9:00 to 5/25/17 10:00.

Solar radiation data missing for the following periods:

5/13/09 9:00 to 6/8/09 11:30
7/20/11 13:00 to 8/12/11 11:30
11/8/12 14:30 to 11/28/12 10:00
8/9/13 10:30 to 9/16/13 11:30

Net radiation data missing for the following periods:

5/22/07 13:30 to 7/5/07 14:30
10/22/09 12:30 to 12/11/09 12:30
8/29/11 13:30 to 9/21/11 11:30
11/8/12 13:30 to 12/11/12 13:30
11/22/13 14:30 to 12/17/13 14:00
9/9/14 9:30 to 11/4/14 11:30
8/21/15 14:00 to 10/16/15 12:30
9/23/16 0:30 to 9/30/16 14:30

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

11/8/12 14:00 to 11/28/12 10:00
2/4/14 10:00 to 3/4/14 11:30
3/17/15 13:00 to 4/3/15 12:30
4/4/16 13:30 to 4/26/16 9:00

Wind direction data unreliable from 9/19/07 15:30 to 10/23/07 14:30.

Windspeed and wind direction data missing for the following periods:

10/23/07 14:30 to 11/14/07 15:30
10/22/09 12:30 to 11/13/09 15:30
12/1/11 15:30 to 12/19/11 15:30
11/8/12 14:30 to 11/28/12 10:00
2/4/14 10:00 to 3/4/14 10:30
3/10/16 14:00 to 4/4/16 13:00

Well depth data missing for the following periods:

1/1/08 0:30 to 5/27/09 13:30
8/5/09 9:30 to 12/2/09 9:00
10/6/10 22:30 to 10/15/10 3:00
10/16/10 17:00 to 10/25/10 19:00
10/29/10 5:00 to 12/18/10 11:30
1/3/11 22:30 to 1/16/11 10:00
1/24/11 0:30 to 1/24/11 10:00
2/20/11 16:30 to 3/27/11 10:00
4/13/11 20:30 to 8/12/11 11:00
8/20/11 6:30 onward.

Because the manual rain gauge overflowed during the extreme rain event, the manual/tipping bucket ratio from 9/28/15 to 10/2/15 (4.72 in/4.18 in) was used to estimate rainfall totals from 10/2/15 to 10/7/15.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
A suite of climatic variables were recorded electronically by sensors linked to a Campbell Scientific CR10X datalogger and downloaded directly to a laptop computer using PC208 software.

Sensors installed with the CR10X datalogger included: CS500 temperature and relative humidity probe (1.96 m height from ground); Met One 34A windset (2.87 m height from ground); LI-COR LI200X pyranometer (2.93 m height from ground); Texas Electronics TE525WS tipping bucket rain gauge (with its opening at 0.6 m height from ground); and a Radiation and Energy Balance Systems Q7.1 net radiometer (2.64 m height from ground).

At the same time that the electronic data were collected, the adjacent manual rain gauge water level was recorded using a dipstick and then dumped. Max/min and current ambient air temperature were also recorded (at 1.52 m height inside a ventilated wooden enclosure).

The CS500 sensor was replaced by an HMP45C temperature/RH sensor on 8/12/11.

The TE525WS tipping bucket rain gauge was replaced by a TE525MM gauge on 9/16/13.

The LI-200X sensor was removed and replaced by an Apogee SP-110 pyranometer on 5/8/14.

Replaced roof on wooden enclosure for max/min and ambient air temperature thermometers on 5/23/16.

The Q7.1 net radiometer was replaced by an NR-LITE2 net radiometer on 9/30/16.

The TE525MM tipping bucket gauge was replaced by a TE525WS gauge on 5/17/17.

The CR10X datalogger was replaced by a Campbell Scientific CR1000 datalogger on 5/25/17. On the same date the HMP45C temperature and relative humidity sensor was replaced by an HMP60 sensor. The recording interval was changed from 30 to 15 minutes in the new datalogger program. An RF451 900 MHz 1 W Spread-Spectrum radio and an Omnidirectional antenna were also installed to enable radio transmission of data to a computer in the office.
Process_Step:
Process_Description:
Electronic data were downloaded from the CR10X datalogger (or transmitted via radio from the CR1000 datalogger to a computer in the office) and plotted to check for outliers or anomalies. The tipping bucket gauge totals were calibrated against the amount of rainfall that had been collected in the adjacent manual gauge. Starting in May 2017, 15-minute vapor pressure and vapor pressure deficit values were calculated from the transmitted data according to the FAO (1990) method.

In June 2017 the Santee Experimental Forest began participating in the Smart Forests Network, and we started posting data from the Santee Headquarters weather station to the Smart Forests website, https://smartforests.org/,
Process_Date: Unknown
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Variables included in the datasets SanteeHQ_halfhourly_data_2006_2007_rev.xlsx, SanteeHQ_halfhourly_data_2008_2011.xlsx, SanteeHQ_halfhourly_data_2012.xlsx, SanteeHQ_halfhourly_data_2013.xlsx, SanteeHQ_halfhourly_data_2014.xlsx, SanteeHQ_halfhourly_data_2015.xlsx, SanteeHQ_halfhourly_data_2016.xlsx, and SanteeHQ_halfhourly_15min_data_2017.xlsx:

Location = weather station location (HQ Office = Santee Headquarters);
Instr_ID = weather station name (SEFHQ = Santee Headquarters 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 or half hour associated with instantaneous data (0 to 23.75);
Solar_rad_ (alias 'AverageSolarRadiation') = 15 or 30 minute average solar radiation, in Watts per m2;
Net_rad_Wm (alias 'AverageNetRadiation') = 15 or 30 minute average net radiation, in Watts per m2;
Windspeed_ (alias 'AverageWindspeed') = 15 or 30 minute average wind speed, in m per sec;
Wind_direc (alias 'AverageWindDirection') = 15 or 30 minute wind direction vector, in degrees;
Air_Temp_C (alias 'AverageAirTemperature') = 15 or 30 minute average air temperature, in degrees Celsius;
Vapor_Kpa = (alias 'AverageVaporPressure') calculated 15 or 30 minute average vapor pressure, in kPa;
max_RH (alias 'MaximumRH') = 15 or 30 minute maximum relative humidity, as a fraction;
min_RH (alias 'MinimumRH') = 15 or 30 minute minimum relative humidity, as a fraction;
RH (alias 'RelativeHumidity') = 15 or 30 minute relative humidity, as a fraction;
Date_ave = date associated with averaged/totalled/maximum/minimum data (format MM/DD/YYYY HH:MM);
Time24_ave = nearest quarter or half hour associated with averaged/totalled/maximum/minimum data (0.25 to 24);
Rainfall_m (alias 'Rainfall') = rainfall total for preceding quarter or half hour, in mm; 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
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Metadata_Reference_Information:
Metadata_Date: 20181026
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
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