CEOP CPPA SGP (SouthernGreat Plains) Reference Site
1. IDENTIFICATION INFORMATIONName

CEOP CPPA SGP (Southern Great Plains) Reference Site

Metadata
Identifier

CEOP_CPPA_SGP20230727061134-DIAS20221121113753-en

2. CONTACT
2.1 CONTACT on DATASET
Name

Steven F. Williams

Organization

NCAR/EOL/CDS

Address

P.O. Box 3000, Boulder, Colorado, 80307, USA

TEL+1- (303)497-8164

FAX+1-(303)497-2044

E-mailsfw@ucar.edu

2.2 CONTACT on PROJECT
2.2.1 Data Integration and Analysis SystemName

DIAS Office

Organization

Japan Agency for Marine-Earth Science and Technology

Address

3173-25, Showa-Cho, Kanazawa-ku, Yokohama-shi, Kanagawa, 236-0001, Japan

E-maildias-office@diasjp.net

3. DOCUMENT AUTHOR
Name

Steven F. Williams

Organization

NCAR/EOL/CDS

E-mailsfw@ucar.edu

4. DATASET CREATOR
Name

Steven F. Williams

Organization

NCAR/EOL/CDS

E-mailsfw@ucar.edu

1

5. DATE OF THIS DOCUMENT
2023-07-27

6. DATE OF DATASET
�creation : 2010-08-13

7. DATASET OVERVIEW
7.1 Abstract
The Southern Great Plains (SGP) site was the first field measurement site established by DOE's
Atmospheric Radiation Measurement (ARM) Program. Scientists are using the information obtained fromthe SGP to improve cloud and radiative models and parameterizations and, thereby, the performanceof atmospheric general circulation models used for climate research.
Deployment of the first instrumentation to the SGP site occurred in the spring of 1992, just
24 months after the program was approved. The site was dedicated in November 1992. Additional
instrumentation and data processing capabilities have been incrementally added in the succeeding
years. The site was recently rededicated in the name of Dr. Frederick Luther (1943-1986), who madeoutstanding contributions to the field of atmospheric research and furthering our understanding ofatmospheric radiation and its interactions with clouds, aerosols, and gases.
The SGP was chosen as the first ARM field measurement site for several reasons including its
relatively homogeneous geography and easy accessibility, wide variability of climate cloud typeand surface flux properties, and large seasonal variation in temperature and specific humidity. It
also already had a large, existing network of weather and climate research and instrumentation.
The SGP site consists of in situ and remote-sensing instrument clusters arrayed across approximately
55,000 square miles (143,000 square kilometers) in north-central Oklahoma. The ARM SGP site is
the largest and most extensive climate research field site in the world and can be viewed as areal "laboratory without walls."
The heart of the SGP site is the heavily instrumented central facility located on 160 acres of cattle
pasture and wheat fields southeast of Lamont, Oklahoma. A staff of 30 scientists and technicianscollect and monitor data from the central facility instruments and from smaller, unstaffed facilities
throughout the site.
The instruments throughout the site automatically collect data on surface and atmospheric properties,
routinely providing data to the Site Data System, which is linked by high-speed communications
to the ARM Archive and Data Center. The Data Center acquires additional data from other sources,
such as National Weather Service satellite and surface data, and provides tailored data packages
to ARM Science Team members.
More than 30 instrument clusters have been placed around the SGP site, at the central facility andat boundary, extended, and intermediate facilities. The locations for the instruments were chosen sothat the measurements reflect conditions over the typical distribution of land uses within the site.
The continuous observations at the SGP site are supplemented by intensive observation periods, when
the frequency of measurements is increased and special measurements are added to address specificresearch questions. During such periods, approximately 2 gigabytes or more of data (two billion2bytes) is generated daily. Both during intensive observation periods and at other times, scientists
bring their own specialized instruments to the SGP site, typically for several weeks.

7.2 Topic Category(ISO19139)
�climatologyMeteorologyAtmosphere

7.3 Temporal Extent
Begin Date

2002-10-01 00:00:00

End Date

2009-12-31 23:59:59

Temporal
Characteristics

30minute

7.4 Geographic Bounding Box
Northlatitude

bound 39.000000

West
longitudebound -100.500000

Eastboundlongitude-94.500000

South
latitudebound 34.000000

7.5 Grid
7.6 Geographic Description
7.7 Keywords
7.7.1 Keywords on Dataset
Keyword Type

Keyword

Keyword
Name

theme

Climate, Water

GEOSS

thesaurus

7.7.2 Keywords on Project
7.7.2.1 Data Integration and Analysis System
Keyword Type

Keyword

Keyword
Name

theme

DIAS &amp;gt; Data Integration and Analysis System

No_Dictionary

7.8 Online Resource

3thesaurus

�CPPA: SGP Surface Meteorology and Radiation Data Set : http://data.eol.http://data.eol.ucar.edu/codiac/dss/id=76.097
�CPPA: SGP Meteorological Tower Data Set : http://data.eol.ucar.edu/codiac/dss/id=76.101
�CPPA: SGP Soil Temperature and Soil Moisture Data Set : http://data.eol.ucar.edu/codiac/dss/id=76.112
�CPPA: SGP Flux Data Set : http://data.eol.ucar.edu/codiac/dss/id=76.098
�DOE ARM SGP Radiosonde (2-sec vertical resolution) Data : http://data.eol.ucar.edu/codiac/dss/id=71.006
�C1 (Central Facility, Lamont, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/
SGP/C1/�E1 (Extended Facility 1, Larned, KS) Station inactive as of 15 October 2009). : http://
www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E1/
�E2 (Extended Facility 2, Hillsboro, KS) Station inactive as of 20 October 2009. : http://
www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E2/
�E3 (Extended Facility 3, LeRoy, KS) Station inactive as of 28 October 2009). : http://
www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E3/
�E4 (Extended Facility 4, Plevna, KS) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E4/�E5 (Extended Facility 5, Halstead, KS) Station inactive as of 2 November 2009. : http://
www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E5/�E6 (Extended Facility 6, Towanda, KS) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E6/
�E7 (Extended Facility 7, Elk Falls, KS) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E7/
�E8 (Extended Facility 8, Coldwater, KS) Station inactive as of 10 November 2009. : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E8/
�E9 (Extended Facility 9, Ashton, KS) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E9/
�E10 (Extended Facility 10, Tyro, KS) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E10/
�E11 (Extended Facility 11, Byron, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E11/
�E12 (Extended Facility 12, Pawhuska, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E12/
�E13 (Extended Facility 13, Lamont, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E13/
�E14 (Extended Facility 14, Lamont, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E14/
�E15 (Extended Facility 15, Ringwood, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E15/
�E16 (Extended Facility 16, Vici, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E16/

4

�E18 (Extended Facility 18, Morris, OK) This station inactive as of 17 November 2009. : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E18/
�E19 (Extended Facility 19, El Reno, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E19/
�E20 (Extended Facility 20, Meeker, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E20/
�E21 (Extended Facility 21, Okmulgee, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/
cppa/SGP/E21/
�E22 (Extended Facility 22, Cordell, OK) Station inactive as of 1 December 2009. : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E22/
�E24 (Extended Facility 24, Cyril, OK) This station inactive as of 24 November 2009). : http://
www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E24/
�E26 (Extended Facility 26, Cement, OK) This station inactive as of 16 December 2009. : http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/cppa/SGP/E26/
�E27 (Extended Facility 27, Earlsboro, OK) : http://www.eol.ucar.edu/projects/ceop/dm/insitu/
sites/cppa/SGP/E27/
�file download : https://data.diasjp.net/dl/storages/filelist/dataset:128

7.9 Data Environmental Information
7.10 Distribution Information
nameversion

specification

PRN

no information

CEOP Unified Format

8. DATA PROCESSING
8.1 Data Processing (1)8.1.1 General Explanation of the data producer's knowledge about thelineage of a dataset
8.1.2 Data Source
Data Source Citation NameDescription of derived parameters and processing
techniques used

9. DATA REMARKS
Data were obtained from the Atmospheric Radiation Measurement(ARM) Program sponsored by the U.S. Department of Energy, Officeof Science, Office of Biological and Environmental Research,
Environmental Sciences Division."510. DATA POLICY
10.1 Data Policy by the Data Provider
1. No financial implications are involved for the CEOP reference site data exchange.
2. Commercial use and exploitation of CEOP reference site data is prohibited.
3. Any re-export or transfer of the original data received from the CDA archive to a third party
is prohibited.
4. The origin of CEOP reference site data being used for publication of scientific results mustbe acknowledged and referenced in the publication.
5. CEOP reference site data users are strongly encouraged to establish direct contact with data
providers for complete interpretation and analysis of data for publication purposes.
6. Co-authorship of data users and CEOP reference site Principle Investigators on papers making
extensive use of CEOP data is justifiable and highly recommended.
see http://www.eol.ucar.edu/projects/ceop/dm/documents/ceop_policy.html

10.2 Data Policy by the Project
10.2.1 Data Integration and Analysis System
If data provider does not have data policy, DIAS Terms of Service (https://diasjp.net/en/terms/)
and DIAS Privacy Policy (https://diasjp.net/en/privacy/) apply.
If there is a conflict between DIAS Terms of Service and data provider's policy, the data provider'spolicy shall prevail.

11. LICENSE
12. DATA SOURCE ACKNOWLEDGEMENT
12.1 Acknowledge the Data Provider
A minimum requirement is to reference CEOP as:
The in-situ data is provided under the framework of the "Coordinated Energy and Water Cycle
Observations Project (CEOP)."for the Coordinated Energy and Water Cycle Observations Project data (2005), and as:
The satellite data is provided under the framework of the "Coordinated Enhanced Observing Period(CEOP)."for the Coordinated Enhanced Observing Period data (2001 - 2004).

12.2 Acknowledge the Project6

12.2.1 Data Integration and Analysis System
If you plan to use this dataset for a conference presentation, paper, journal article, or reportetc., please include acknowledgments referred to following examples. If the data provider describes
examples of acknowledgments, include them as well.
" In this study, [Name of Dataset] provided by [Name of Data Provider] was utilized. This dataset
was also collected and provided under the Data Integration and Analysis System (DIAS), which wasdeveloped and operated by a project supported by the Ministry of Education, Culture, Sports, Scienceand Technology. "13. REFERENCES
http://www.joss.ucar.edu/data/ceop/docs/GAPP/GAPP_SGP_SMOS.pdf
http://www.joss.ucar.edu/data/ceop/docs/GAPP/GAPP_SGP_SIRS.pdf
http://www.joss.ucar.edu/data/ceop/docs/GAPP/GAPP_SGP_IRT.pdf

7