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 = External Facility, I = Intermediate Facility, L = Logistics Facility, N = Network Location, S = Supplemental Facility, X = External Data / Facility
| Facility Name | Site Code | Facility Code | Elevation | Lat/Lon | Surface Type |
|---|---|---|---|---|---|
|
Hillsboro, KS (Boundary)
(Removed: 2009-10-20) |
SGP
|
B1
|
448 m
|
38.304444
N
97.300833
W
(Google Map) |
Grass |
|
Vici, OK (Boundary)
(Removed: 2010-02-17) |
SGP
|
B4
|
642 m
|
36.066111
N
99.209444
W
(Google Map) |
Grass |
|
Morris, OK (Boundary)
(Removed: 2009-11-17) |
SGP
|
B5
|
217 m
|
35.688055
N
95.855277
W
(Google Map) |
Grass |
|
Purcell, OK (Boundary)
(Removed: 2010-01-13) |
SGP
|
B6
|
349 m
|
34.984722
N
97.522777
W
(Google Map) |
Grass |
| Central Facility, Lamont, OK |
SGP
|
C1
|
314 m
|
36.607322
N
97.487643
W
(Google Map) |
Rangeland (Sandy) |
|
Larned, KS (Extended)
(Removed: 2009-10-14) |
SGP
|
E1
|
631 m
|
38.202107
N
99.316894
W
(Google Map) |
Wheat |
|
Hillsboro, KS (Extended)
(Removed: 2009-10-20) |
SGP
|
E2
|
448 m
|
38.304444
N
97.300833
W
(Google Map) |
Grass |
|
LeRoy, KS (Extended)
(Removed: 2009-10-28) |
SGP
|
E3
|
346 m
|
38.201005
N
95.897005
W
(Google Map) |
Wheat and soybeans (Rotated) |
|
Plevna, KS (Extended)
(Removed: 2011-09-26) |
SGP
|
E4
|
514 m
|
37.954505
N
98.330075
W
(Google Map) |
Rangeland (Ungrazed) |
|
Halstead, KS (Extended)
(Removed: 2009-11-02) |
SGP
|
E5
|
439 m
|
38.114719
N
97.515408
W
(Google Map) |
Wheat |
|
Towanda, KS (Extended)
(Removed: 2011-10-18) |
SGP
|
E6
|
403 m
|
37.843058
N
97.020569
W
(Google Map) |
Alfalfa |
|
Elk Falls, KS (Extended)
(Removed: 2011-11-14) |
SGP
|
E7
|
281 m
|
37.384272
N
96.180713
W
(Google Map) |
Pasture |
|
Coldwater, KS (Extended)
(Removed: 2009-11-10) |
SGP
|
E8
|
664 m
|
37.331655
N
99.308894
W
(Google Map) |
Rangeland (Grazed) |
|
Ashton, KS (Extended)
(Removed: 2023-09-29) |
SGP
|
E9
|
386 m
|
37.132002
N
97.266077
W
(Google Map) |
Pasture |
|
Tyro, KS (Extended)
(Removed: 2011-11-19) |
SGP
|
E10
|
248 m
|
37.068611
N
95.784444
W
(Google Map) |
Alfalfa |
|
Byron, OK (Extended)
(Removed: 2023-09-29) |
SGP
|
E11
|
360 m
|
36.881345
N
98.286393
W
(Google Map) |
Pasture |
| Pawhuska, OK (Extended) |
SGP
|
E12
|
331 m
|
36.841409
N
96.428106
W
(Google Map) |
Native Prairie |
| Lamont, OK (Extended and Co-located with C1) |
SGP
|
E13
|
318 m
|
36.604937
N
97.485561
W
(Google Map) |
Pasture and Wheat |
| Lamont, OK (Extended, secondary) |
SGP
|
E14
|
314 m
|
36.605216
N
97.487684
W
(Google Map) |
Pasture and Wheat |
|
Ringwood, OK (Extended)
(Removed: 2023-09-29) |
SGP
|
E15
|
418 m
|
36.430844
N
98.284348
W
(Google Map) |
Pasture |
|
Vici, OK (Extended)
(Removed: 2011-11-15) |
SGP
|
E16
|
606 m
|
36.062777
N
99.133888
W
(Google Map) |
Wheat |
|
Morris, OK (Extended)
(Removed: 2009-11-17) |
SGP
|
E18
|
217 m
|
35.688055
N
95.855277
W
(Google Map) |
Pasture (Ungrazed) |
|
El Reno, OK (Extended)
(Removed: 2011-09-23) |
SGP
|
E19
|
415 m
|
35.556867
N
98.015807
W
(Google Map) |
Pasture (Ungrazed) |
|
Meeker, OK (Extended)
(Removed: 2011-11-17) |
SGP
|
E20
|
298 m
|
35.564210
N
96.987757
W
(Google Map) |
Pasture |
|
Okmulgee, OK (Extended)
(Removed: 2019-05-02) |
SGP
|
E21
|
240 m
|
35.618339
N
96.065558
W
(Google Map) |
Forest |
|
Cordell, OK (Extended)
(Removed: 2009-12-01) |
SGP
|
E22
|
464 m
|
35.355576
N
98.977874
W
(Google Map) |
Rangeland (Grazed) |
|
Cyril, OK (Extended)
(Removed: 2009-11-14) |
SGP
|
E24
|
408 m
|
34.883380
N
98.203916
W
(Google Map) |
Wheat (Gypsum Hill) |
|
Seminole, OK (Extended)
(Removed: 2002-04-09) |
SGP
|
E25
|
283 m
|
35.245555
N
96.734141
W
(Google Map) |
Pasture |
|
Cement, OK (Extended)
(Removed: 2009-12-17) |
SGP
|
E26
|
394 m
|
34.956919
N
98.075951
W
(Google Map) |
Pasture |
|
Earlsboro, OK (Extended)
(Removed: 2010-01-20) |
SGP
|
E27
|
303 m
|
35.269222
N
96.740111
W
(Google Map) |
Pasture |
|
Anthony, KS (Extended)
(Removed: 2021-09-21) |
SGP
|
E31
|
412 m
|
37.150909
N
98.362022
W
(Google Map) |
Pasture |
| Medford, OK (Extended) |
SGP
|
E32
|
328 m
|
36.819270
N
97.819843
W
(Google Map) |
Pasture |
| Newkirk, OK (Extended) |
SGP
|
E33
|
357 m
|
36.925423
N
97.081708
W
(Google Map) |
Cultivated field to south, site in grassy field |
|
Maple City, KS (Extended)
(Removed: 2023-09-29) |
SGP
|
E34
|
417 m
|
37.069563
N
96.760540
W
(Google Map) |
Pasture |
|
Tryon, OK (Extended)
(Removed: 2023-09-29) |
SGP
|
E35
|
294 m
|
35.861614
N
97.069615
W
(Google Map) |
Pasture |
|
Marshall, OK (Extended)
(Removed: 2023-09-29) |
SGP
|
E36
|
340 m
|
36.117032
N
97.510908
W
(Google Map) |
Pasture |
| Waukomis, OK (Extended) |
SGP
|
E37
|
379 m
|
36.310422
N
97.927405
W
(Google Map) |
Cultivated field to south, site in grass |
|
Omega, OK (Extended)
(Removed: 2021-06-07) |
SGP
|
E38
|
367 m
|
35.879853
N
98.173045
W
(Google Map) |
Cultivated field to south, site in pasture |
| Morrison, OK (Extended) |
SGP
|
E39
|
279 m
|
36.373539
N
97.069053
W
(Google Map) |
Cultivated field to south, site in pasture |
|
Pawnee, OK (Extended)
(Removed: 2023-09-29) |
SGP
|
E40
|
247 m
|
36.319367
N
96.762027
W
(Google Map) |
Pasture |
| Peckham, OK (Extended) |
SGP
|
E41
|
341 m
|
36.879561
N
97.086452
W
(Google Map) |
Cultivated field to south, site in grassy field |
|
Lamont, OK (Extended, Shipping)
(Removed: 2023-08-28) |
SGP
|
E42
|
305 m
|
36.601350
N
97.481037
W
(Google Map) |
Pasture |
| Lamont, OK (NW stereo camera site, Extended) |
SGP
|
E43
|
311 m
|
36.637100
N
97.538200
W
(Google Map) |
Pasture |
| Billings, OK (SE stereo camera site, Extended) |
SGP
|
E44
|
310 m
|
36.637000
N
97.430200
W
(Google Map) |
Pasture |
| Tonkawa, OK (NE stereo camera site, Extended) |
SGP
|
E45
|
317 m
|
36.549900
N
97.479700
W
(Google Map) |
Grass |
|
Lamont, OK (Extended for testing)
(Removed: 1995-04-03) |
SGP
|
E99
|
— | — | Awaiting information |
| Southern Great Plains; Gulfstream 159 Aircraft |
SGP
|
F1
|
215 m
|
36.753980
N
96.009010
W
(Google Map) |
Awaiting information |
| Cessna 206 Aircraft |
SGP
|
F2
|
303 m
|
36.727585
N
97.101580
W
(Google Map) |
Awaiting information |
|
Beaumont, KS (Intermediate)
(Removed: 2011-03-31) |
SGP
|
I1
|
478 m
|
37.626000
N
96.538000
W
(Google Map) |
Rangeland |
|
Medicine Lodge, KS (Intermediate)
(Removed: 2008-09-09) |
SGP
|
I2
|
616 m
|
37.280000
N
98.933000
W
(Google Map) |
Rangeland |
|
Meeker, OK (Intermediate)
(Removed: 2009-02-17) |
SGP
|
I3
|
275 m
|
35.551000
N
96.864000
W
(Google Map) |
Grass |
|
Billings, OK (Intermediate)
(Removed: 2023-09-29) |
SGP
|
I4
|
330 m
|
36.578650
N
97.363834
W
(Google Map) |
Cultivated Field |
|
Garber, OK (Intermediate)
(Removed: 2023-09-29) |
SGP
|
I5
|
328 m
|
36.491178
N
97.593936
W
(Google Map) |
Pasture |
| Deer Creek, OK (Intermediate) |
SGP
|
I6
|
341 m
|
36.767569
N
97.547446
W
(Google Map) |
Cultivated Field |
| Nardin, OK (C-band radar site, Intermediate / Auxiliary) |
SGP
|
I7
|
327 m
|
36.796101
N
97.449012
W
(Google Map) |
Cultivated Field |
|
Tonkawa, OK (NE radar wind profiler site, Intermediate / Auxiliary)
(Removed: 2023-09-29) |
SGP
|
I8
|
306 m
|
36.708631
N
97.386319
W
(Google Map) |
Pasture |
|
Billings, OK (SE radar wind profiler site, Intermediate / Auxiliary)
(Removed: 2023-09-29) |
SGP
|
I9
|
291 m
|
36.477116
N
97.421082
W
(Google Map) |
Pasture |
|
Lamont, OK (NW radar wind profiler site, Intermediate / Auxiliary)
(Removed: 2023-09-29) |
SGP
|
I10
|
312 m
|
36.665570
N
97.628475
W
(Google Map) |
Pasture (Ungrazed) |
| Billings, OK (SE scanning X/Ka-band cloud radar site, Intermediate / Auxiliary) |
SGP
|
I12
|
— | — | Pasture |
| Supplemental 1, Lamont, OK |
SGP
|
S01
|
— | — | Pasture |
| Supplemental 2, Lamont, OK |
SGP
|
S02
|
— | — | Pasture |
| Supplemental 3, Lamont, OK |
SGP
|
S03
|
— | — | Pasture |
| Supplemental 4, Lamont, OK |
SGP
|
S04
|
— | — | Pasture |
| Supplemental 5, Lamont, OK |
SGP
|
S05
|
— | — | Pasture |
| Supplemental 6, Chickasha, OK |
SGP
|
S06
|
— | — | Pasture |
| Supplemental 7, Lamont, OK |
SGP
|
S07
|
— | — | Pasture |
| Supplemental 8, Lamont, OK |
SGP
|
S08
|
— | — | Pasture |
|
Blackwell/Tonkawa Airport, OK (Supplemental)
(Removed: 2000-03-23) |
SGP
|
S3
|
— | — | Pasture |
|
Billings, OK (Site A1 for AWAKEN)
(Removed: 2024-02-28) |
SGP
|
S4
|
329 m
|
36.362116
N
97.404548
W
(Google Map) |
Awaiting information |
|
Lucien, OK (Site A2 for AWAKEN)
(Removed: 2023-09-11) |
SGP
|
S5
|
322 m
|
36.318198
N
97.409079
W
(Google Map) |
Awaiting information |
|
Billings, OK (Site H for AWAKEN)
(Removed: 2024-02-28) |
SGP
|
S6
|
305 m
|
36.437014
N
97.407794
W
(Google Map) |
Awaiting information |
| ARM Aerial Facility (AAF) - Unmanned Aircraft Systems, ArcticShark |
SGP
|
U2
|
— | — | Awaiting information |
|
ARM Aerial Facility (AAF) - Unmanned Aircraft Systems, TigerShark
(Removed: 2021-11-16) |
SGP
|
U3
|
— | — | Awaiting information |