The Southern Great Plains (SGP) atmospheric observatory was the first field measurement site established by the Atmospheric Radiation Measurement (ARM) user facility. This observatory is the world’s largest and most extensive climate research facility.

Scientists use data from the SGP to learn about cloud, aerosol, and atmospheric processes, which in turn leads to improvements in models of the Earth’s climate.

Note: A = Argonne Boundary Layer Experiment, B = Boundary Facility, C = Central Facility, E = Extended Facility, I = Intermediate Facility, L = Logistics Facility, N = Network Location, S = Supplemental Facility, and X = External Data/Facility

Southern Great Plains

Site Site Code Facility Elevation (m) Lat/Lon Surface Type
Whitewater, KS (ABLE)
(Removed: 2004-04-01)
SGP A1 0 m 37.841 N
97.186 W
Awaiting information
Beaumont, KS (ABLE)
(Removed: 2004-04-01)
SGP A2 0 m 37.627 N
96.538 W
Awaiting information
Augusta, KS (ABLE)
(Removed: 2004-04-01)
SGP A3 0 m 37.626 N
96.882 W
Awaiting information
Smileyberg, KS (ABLE)
(Removed: 2004-04-01)
SGP A4 0 m 37.521 N
96.855 W
Awaiting information
Oxford, KS (ABLE)
(Removed: 2004-04-01)
SGP A5 0 m 37.273 N
97.095 W
Awaiting information
Brainard, KS (ABLE)
(Removed: 2003-10-26)
SGP A6 0 m 0 S
0 W
Awaiting information
Hillsboro, KS (Boundary)
(Removed: 2009-10-20)
SGP B1 447 m 38.305 N
97.301 W
Awaiting information
Vici, OK (Boundary)
(Removed: 2010-02-17)
SGP B4 622 m 36.071 N
99.204 W
Awaiting information
Morris, OK (Boundary)
(Removed: 2009-11-17)
SGP B5 217 m 35.688 N
95.856 W
Awaiting information
Purcell, OK (Boundary)
(Removed: 2010-01-13)
SGP B6 344 m 34.985 N
97.522 W
Grass
Central Facility, Lamont, OK SGP C1 318 m 36.605 N
97.485 W
Rangeland (Sandy)
Larned, KS (Extended)
(Removed: 2009-10-14)
SGP E1 632 m 38.202 N
99.316 W
Awaiting information
Hillsboro, KS (Extended)
(Removed: 2009-10-20)
SGP E2 450 m 38.306 N
97.301 W
Awaiting information
LeRoy, KS (Extended)
(Removed: 2009-10-28)
SGP E3 338 m 38.201 N
95.597 W
Awaiting information
Plevna, KS (Extended)
(Removed: 2011-09-26)
SGP E4 513 m 37.953 N
98.329 W
Awaiting information
Halstead, KS (Extended)
(Removed: 2009-11-02)
SGP E5 440 m 38.114 N
97.513 W
Awaiting information
Towanda, KS (Extended)
(Removed: 2011-10-18)
SGP E6 409 m 37.842 N
97.02 W
Awaiting information
Elk Falls, KS (Extended)
(Removed: 2011-11-14)
SGP E7 283 m 37.383 N
96.18 W
Pasture
Coldwater, KS (Extended)
(Removed: 2009-11-10)
SGP E8 664 m 37.333 N
99.309 W
Rangeland (Grazed)
Ashton, KS (Extended) SGP E9 386 m 37.133 N
97.266 W
Pasture
Tyro, KS (Extended)
(Removed: 2011-11-19)
SGP E10 248 m 37.068 N
95.788 W
Awaiting information
Byron, OK (Extended) SGP E11 360 m 36.881 N
98.285 W
Pasture
Pawhuska, OK (Extended) SGP E12 331 m 36.841 N
96.427 W
Native Prairie
Lamont, OK (Extended) SGP E13 318 m 36.605 N
97.485 W
Pasture and Wheat
Lamont, OK (Extended, secondary) SGP E14 315 m 36.607 N
97.488 W
Pasture and Wheat
Ringwood, OK (Extended) SGP E15 418 m 36.431 N
98.284 W
Pasture
Vici, OK (Extended)
(Removed: 2011-11-15)
SGP E16 602 m 36.061 N
99.134 W
Awaiting information
Morris, OK (Extended)
(Removed: 2009-11-17)
SGP E18 217 m 35.687 N
95.856 W
Pasture (Ungrazed)
El Reno, OK (Extended)
(Removed: 2011-09-23)
SGP E19 421 m 35.557 N
98.017 W
Awaiting information
Meeker, OK (Extended)
(Removed: 2011-11-17)
SGP E20 309 m 35.564 N
96.988 W
Pasture
Okmulgee, OK (Extended) SGP E21 240 m 35.615 N
96.065 W
Forest
Cordell, OK (Extended)
(Removed: 2009-12-01)
SGP E22 465 m 35.354 N
98.977 W
Awaiting information
Ft. Cobb, OK (Extended) SGP E23 0 m 0 S
0 W
Awaiting information
Cyril, OK (Extended)
(Removed: 2009-11-14)
SGP E24 409 m 34.883 N
98.205 W
Awaiting information
Seminole, OK (Extended)
(Removed: 2002-04-09)
SGP E25 277 m 35.246 N
96.736 W
Pasture
Cement, OK (Extended)
(Removed: 2009-12-17)
SGP E26 400 m 34.957 N
98.076 W
Pasture
Earlsboro, OK (Extended)
(Removed: 2010-01-20)
SGP E27 300 m 35.269 N
96.74 W
Awaiting information
Anthony, KS (Extended) SGP E31 412 m 37.1509 N
98.362 W
Pasture
Medford, OK (Extended) SGP E32 328 m 36.819 N
97.8199 W
Pasture
Newkirk, OK (Extended) SGP E33 357 m 36.9255 N
97.0817 W
Cultivated field to south, site in grassy field
Maple City, KS (Extended) SGP E34 417 m 37.0694 N
96.7606 W
Pasture
Tryon, OK (Extended) SGP E35 294 m 35.8615 N
97.0695 W
Pasture
Marshall, OK (Extended) SGP E36 337 m 36.1166 N
97.5112 W
Pasture
Waukomis, OK (Extended) SGP E37 379 m 36.3106 N
97.928 W
Cultivated field to south, site in grass
Omega, OK (Extended) SGP E38 371 m 35.8797 N
98.1728 W
Cultivated field to south, site in pasture
Morrison, OK (Extended) SGP E39 279 m 36.37354 N
97.06905 W
Cultivated field to south, site in pasture
Pawnee, OK (Extended) SGP E40 247 m 36.3199 N
96.7652 W
Pasture
Peckham, OK (Extended) SGP E41 340 m 36.87956 N
97.08645 W
Cultivated field to south, site in grassy field
Lamont, OK (Extended, Shipping) SGP E42 0 m 0 S
0 W
Awaiting information
Lamont, OK (NW stereo camera site, Extended) SGP E43 0 m 0 S
0 W
Pasture
Billings, OK (SE stereo camera site, Extended) SGP E44 0 m 0 S
0 W
Pasture
Tonkawa, OK (NE stereo camera site, Extended) SGP E45 0 m 0 S
0 W
Grass
Lamont, OK (Extended for testing)
(Removed: 1995-04-03)
SGP E99 0 m 0 S
0 W
Awaiting information
Beaumont, KS (Intermediate) SGP I1 478 m 37.626 N
96.538 W
Awaiting information
Medicine Lodge, KS (Intermediate)
(Removed: 2008-09-09)
SGP I2 616 m 37.28 N
98.933 W
Awaiting information
Meeker, OK (Intermediate)
(Removed: 2009-02-17)
SGP I3 275 m 35.551 N
96.864 W
Grass
Billings, OK (Intermediate) SGP I4 330 m 36.579 N
97.3637 W
Cultivated Field
Garber, OK (Intermediate) SGP I5 328 m 36.4915 N
97.5938 W
Pasture
Deer Creek, OK (Intermediate) SGP I6 341 m 36.7673 N
97.5481 W
Cultivated Field
Nardin, OK (C-band radar site, Intermediate / Auxiliary) SGP I7 327 m 36.7962 N
97.4484 W
Cultivated Field
Tonkawa, OK (NE radar wind profiler site, Intermediate / Auxiliary) SGP I8 306 m 36.7095 N
97.3876 W
Pasture
Billings, OK (SE radar wind profiler site, Intermediate / Auxiliary) SGP I9 291 m 36.4762 N
97.4217 W
Pasture
Lamont, OK (NW radar wind profiler site, Intermediate / Auxiliary) SGP I10 312 m 36.6656 N
97.6242 W
Pasture (Ungrazed)
Billings, OK (SE scanning X/Ka-band cloud radar site, Intermediate / Auxiliary) SGP I12 0 m 0 S
0 W
Awaiting information
Blackwell/Tonkawa Airport, OK
(Removed: 2000-04-10)
SGP L3 0 m 0 S
0 W
Awaiting information
Southern Great Plains Network
(Removed: 2009-10-31)
SGP N1 0 m 0 S
0 W
Awaiting information
Supplemental 1, Lamont, OK SGP S01 0 m 0 S
0 W
Awaiting information
Supplemental 2, Lamont, OK SGP S02 0 m 0 S
0 W
Awaiting information
Supplemental 3, Lamont, OK SGP S03 0 m 0 S
0 W
Awaiting information
Supplemental 4, Lamont, OK SGP S04 0 m 0 S
0 W
Awaiting information
Supplemental 5, Lamont, OK SGP S05 0 m 0 S
0 W
Awaiting information
Supplemental 6, Chickasha, OK SGP S06 0 m 0 S
0 W
Awaiting information
Supplemental 7, Lamont, OK SGP S07 0 m 0 S
0 W
Awaiting information
Supplemental 8, Lamont, OK SGP S08 0 m 0 S
0 W
Awaiting information
Blackwell/Tonkawa Airport, OK (Supplemental)
(Removed: 2000-03-23)
SGP S3 0 m 0 S
0 W
Awaiting information
External Data from Oklahoma City, OK SGP X11 0 m 0 S
0 W
Awaiting information
External Data from Topeka, KS SGP X12 0 m 0 S
0 W
Awaiting information
External Data from Dodge City, KS SGP X13 0 m 0 S
0 W
Awaiting information