The Reference Network is a part of NOAA's Earth System Research Laboratory in Boulder, Colorado. The measurement programs include:

Filter results by selecting the projects to display:






Yellow symbols indicate discontinued sites


33 sites in 5 countries
Code Name Country Latitude Longitude Elevation (meters) Time from GMT Cooperating Agency
AAO* Airborne Aerosol Observing, Bondville, Illinois United States 40.050 -88.370 230.0 -6 hours NOAA Earth System Research Laboratory, Global Monitoring Division
ARM* Atmospheric Radiation Measurement (SGP) United States 36.800 -97.500 -9999.99 -6 hours
BAO* Boulder Atmospheric Observatory, Colorado United States 40.050 -105.004 1584.0 -7 hours Private Party; ESRL Physical Sciences Division; NOAA Earth System Research Laboratory, Global Monitoring Division
BGI* Bradgate, Iowa United States 42.820 -94.410 355.1 -6 hours Hap's Air Service
BNE* Beaver Crossing, Nebraska United States 40.800 -97.180 465.9 -6 hours Hap's Air Service
CAR Briggsdale, Colorado United States 40.370 -104.300 1740.0 -7 hours Weisbart Aircraft Services
CMA Cape May, New Jersey United States 38.830 -74.320 0.0 -5 hours AirTec, Inc
CRV Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) United States 64.986 -147.598 611.4 -8 hours NASA Jet Propulsion Laboratory; NOAA/NESDIS/OSPO/FCDAS
DND Dahlen, North Dakota United States 47.500 -99.240 472.4 -6 hours FARGO JET CENTER
ESP Estevan Point, British Columbia Canada 49.383 -126.544 7.0 -8 hours Private Party
ETL East Trout Lake, Saskatchewan Canada 54.350 -104.983 492.0 -6 hours Environment Canada
FTL* Fortaleza Brazil -3.520 -38.280 3.0 -3 hours LBA INPE/CPTEC
FWI* Fairchild, Wisconsin United States 44.660 -90.960 334.3 -6 hours Hap's Air Service
HAA* Molokai Island, Hawaii United States 21.230 -158.950 3.0 -10 hours Pacific Air Charters, Inc.
HFM* Harvard Forest, Massachusetts United States 42.538 -72.171 340.0 -5 hours FOUR STAR AVIATION
HIL Homer, Illinois United States 40.070 -87.910 201.5 -6 hours M & M Aviation Services, Ltd.
INX INFLUX (Indiana Flux Experiment) United States 39.581 -86.421 250.0 -5 hours Purdue University
LEF Park Falls, Wisconsin United States 45.945 -90.273 472.0 -6 hours Wisconsin Educational Communications Board & US Forest Service; MBMAS; USDA Forest Service Forestry Sciences Laboratory; USDA Forest Service
MVY* Marthas Vineyard, Massachusetts United States 41.330 -70.520 0.0 -5 hours Woods Hole Oceanographic Institute
NHA Worcester, Massachusetts United States 42.950 -70.630 0.0 -5 hours Private Party
OIL* Oglesby, Illinois United States 41.280 -88.940 192.6 -6 hours MIDWEST AVTECH
PFA Poker Flat, Alaska United States 65.070 -147.290 210.0 -9 hours Warbelows Air Ventures, Inc.
RIA* Rowley, Iowa United States 42.400 -91.840 298.7 -6 hours Hap's Air Service
RTA Rarotonga Cook Islands -21.250 -159.830 3.0 -10 hours Air Rarotonga LTD.
SAN* Santarem Brazil -2.850 -54.950 78.0 -4 hours LBA INPE/CPTEC
SCA Charleston, South Carolina United States 32.770 -79.550 0.0 -5 hours Orion Aviation
SGP Southern Great Plains, Oklahoma United States 36.607 -97.489 314.0 -6 hours Lawrence Berkeley National Laboratory
TGC Sinton, Texas United States 27.730 -96.860 0.0 -6 hours Skypark Aviation
THD Trinidad Head, California United States 41.054 -124.151 107.0 -8 hours Scientific Aviation, Inc; NOAA Earth System Research Laboratory, Global Monitoring Division
ULB* Ulaanbaatar Mongolia 47.400 106.000 1350.0 +8 hours Mongolian Hydrometeorological Research Institute
VAA* Cartersville, Georgia United States 32.910 -79.360 239.9 -5 hours Phoenix Air
WBI West Branch, Iowa United States 41.725 -91.353 241.7 -6 hours M & M Aviation Services, Ltd.; University of Iowa
WGC* Walnut Grove, California United States 38.265 -121.491 0.0 -8 hours Lawrence Berkeley National Laboratory; DOE Environmental Energy Technologies Division at Lawrence Berkeley National Laboratory; KalScott Engineering
* - Indicates discontinued site or project