While for the most part, the GSD and NWS MADIS systems carry the same data, there are some differences based on a number of factors (see the notes below). New mesonets are added first in the GSD test environment before being added to the NWS system in periodic version upgrades. Note that these differences will change over time as changes are made at the two facilities, and this page will be revised as needed.

Also note that the archive of saved real-time data is only available at GSD.

Here are the current differences:

Dataset	GSD	NWS	Note
Meteorological Surface - METAR (standard)	X	X	1
Meteorological Surface - High Frequency METAR (experimental)	X
Meteorological Surface - SAO	X	X	2
Meteorological Surface - Maritime	X	X
Meteorological Surface - New England Pilot Project	X	X
Meteorological Surface - Integrated Mesonet	X	X	3
Meteorological Surface - National Mesonet/UrbaNet	X	X	3
Meteorological Surface - Climate Reference Network	X	X
Meteorological Surface - U.S. Historical Climatology Network Modernization	X	X
Radiosonde	X	X	1
NOAA Profiler Network	X	X
Hydrological Surface	X	X	3
Automated Aircraft	X	X	4
Multi-Agency Profiler	X	X
Radiometer	X	X
Satellite Wind	X	X	5
Satellite Sounding	X	X	6
Satellite Radiance	X	X	6
Snow	X	X
WISDOM Balloon Wind	X
RSAS Surface Analyses	X	X

Notes

1. The METAR and radiosonde station tables are slightly different at NWS and GSD.
2. The GSD SAO dataset contains observations from a few dozen Canadian stations that still report in SAO format. At NWS the data from these stations is in the METAR dataset.
3. See the tables below to see which mesonets are at each facility.
4. Turbulence data from Delta airlines is only available at GSD.
5. The 1h satellite wind datasets are identical at both facilities. The 3h dataset at NWS does not have GOES-13 data, or sounder channel 10 data.
6. Satellite soundings and radiances do not contain data from NOAA-19 at NWS.

The following table shows which meteorological surface integrated mesonets are available at the two facilities:

Mesonet Data Provider	Provider Name	GSD	NWS	Note
U.S. Air Force Academy	AFA	X	X
AIRNow	AIRNow	X
Alaska Department of Transportation	AKDOT	X	X
Alaska Mesonet	AK-Meso	X	X
U.S. Army Aberdeen Proving Grounds	APG	X	X
Citizen Weather Observers Program	APRSWXNET	X	X	1
NOAA Air Resources Laboratory/ Field Research Division	ARLFRD	X	X
Earth Networks, Inc.	AWS	X	X	1
Anything Weather Network	AWX	X	X
CA-Hydro	CA-Hydro	X
Colorado Avalanche Information Center	CAIC	X	X
Colorado Department of Transportation	CODOT	X
Colorado E-470 Public Highway Authority	CO_E-470	X	X
DCNet	DCNet	X	X
Delaware Environmental Observing System	DEOS	X
Florida Department of Transportation	FLDOT	X	X
Florida Mesonet	FL-Meso	X	X
Georgia Department of Transportation	GADOT	X	X
Goodland WFO Miscellaneous	GLDNWS	X	X
GLOBE Program	GLOBE	X	X
Gulf of Maine Ocean Observing System	GoMOOS	X	X
ESRL/GSD Ground-Based GPS	GPSMET/DDMET	X	X
Hydrometeorological Automated Data System	HADS	X	X
Iowa Department of Transportation	IADOT	X	X
Iowa Environmental Mesonet	IEM	X	X
Indiana Department of Transportation	INDOT	X	X
Boulder WFO Miscellaneous	INTERNET	X	X
Idaho Transportation Department	ITD	X	X
Kansas Department of Transportation	KSDOT	X	X
Kentucy Transportation Cabinet RWIS	KYTC-RWIS	X	X
Lower Colorado River Authority	LCRA	X
LSU-JSU Mesonet	LSU-JSU	X	X
Multi-Agency Profiler Surface Observations	MAP	X	X
Maryland Department of Transportation	MDDOT	X	X
Maine Department of Transportation	MEDOT	X	X
Cooperative Mesonets in the Western U.S.	MesoWest	X	X
Miscellaneous	MISC	X	X	2
Minnesota Department of Transportation	MNDOT	X	X
University of Missouri Extension Commercial Agriculture Automated Weather Network	MOComAgNet	X	X
Marquette WFO Miscellaneous	MQT-Meso	X	X
North Carolina Environment and Climate Observing Network	NC-ECONet	X	X
North Dakota Department of Transportation	NDDOT	X	X
Nebraska Department of Roads	NEDOR	X
National Estuarine Research Reserve System	NERRS	X	X
New Hampshire Department of Transportation	NHDOT	X	X
New Jersey Weather and Climate Network	NJWxNet	X	X
Non-Fed AWOS	NonFedAWOS	X	X
National Ocean Service Water Level Observation Network	NOS-NWLON	X	X
National Ocean Service Physical Oceanographic Real-Time System	NOS-PORTS	X	X
Ohio Department of Transportation	OHDOT	X	X
Oklahoma Mesonet	OK-Meso	X	X
Pennsylvania Department of Environmental Protection	PADEP	X
Centro de Previsão de Tempo e Estudos Climáticos Instituto Nacional de Pesquisas Espaciais	PCDINPE	X	X
Remote Automated Weather Stations	RAWS	X	X
Radiometer	RDMTR	X
South Florida Water Management District	SFWMD	X	X
Denver Urban Drainage and Flood Control District	UDFCD	X	X
Virginia Department of Transportation	VADOT	X	X
Vermont Agency of Transportation	VTDOT	X
Wisconsin Department of Transportation	WIDOT	X	X
West Texas Mesonet	WT-Meso	X	X
WeatherFlow	WxFlow	X	X
Weather for You	WXforYou	X	X
Wyoming Department of Transportation	WYDOT	X	X

Notes

1. At NWS data from the APRSWXNET and AWS networks are ingested every 15 minutes. At GSD these data are ingested every 5 minutes.
2. The NWS-AJK MISC subprovider data are not available at NWS.

The following table shows which meteorological surface National Mesonet/UrbaNet mesonets are available at the two facilities:

Mesonet Data Provider	Provider Name	GSD	NWS	Note
UrbaNet	AWS-UrbaNt	X	X	1
University of South Alabama	USouthAL	X

Notes

1. At NWS data from the AWS-UrbaNt network are ingested every 15 minutes. At GSD these data are ingested every 5 minutes.

The following table shows which hydrological surface mesonets are available at the two facilities:

Mesonet Data Provider	Provider Name	GSD	NWS	Note
Choctawhatchee Pea Yellow River Watershed Management Authority	CPYRWMA	X	X
CA-Hydro	CA-Hydro	X
Community Collaborative Rain, Hail and Snow Network	CoCoRaHS	X	X
Monterey ALERT	MTR-ALERT	X	X
Suwannee River Water Management District	SRWMD	X	X
Denver Urban Drainage and Flood Control District	UDFCD	X	X