IHOP_2002 Profiler/Sodar: ARM Atmospheric Emitted Radiation Interferometer (AERI) Data [U WISC]
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AUTHOR:

P. I. Wayne F. Feltz                                    
Cooperative Institute for Meteorological Studies CIMSS/SSEC  
Space Science and Engineering Center              
University of Wisconsin - Madison                 
1225 W. Dayton Rm 239 
Madison, Wisconsin  53706

wayne.feltz@ssec.wisc.edu       
Tel:  (608) 265-6283  
Fax:  (608) 262-5974

DATASET OVERVIEW:

AERI temperature and moisture retrievals have been calculated from downwelling 
infrared radiances measured by five Atmospheric Emitted Radiance Interferometer (AERI)
groundbased instruments. The location of the instruments were at the Department
of Energy Atmospheric Radiation Measurement (DOE ARM) sites within the IHOP domain at
Lamont, OK; Purcell,OK; Morris, OK; Vici, OK; and Hillsboro, KS.  

An additional AERI system was deployed within a Winnebago at the IHOP Profiling site 
(Homestead site) in the Oklahoma panhandle.

http://cimss.ssec.wisc.edu/ihop/

INSTRUMENT DESCRIPTION:

The instrument and the retrieval processing methodology is described in the 
recently published article:

Feltz, W. F., H. B. Howell, R. O. Knuteson, H. M. Woolf, and H E. Revercomb, 
2003:  Near Continuous Profiling of Temperature, Moisture, and Atmospheric 
Stability using the Atmospheric Emitted Radiance Interferometer (AERI). 
J. Appl. Meteor., 42, 584-597.

DATA COLLECTION AND PROCESSING:

The data sets are broken into daily files for each of the five AERI site locations.
Vertical profiles of temperature and moisture are derived from the AERI IR
radiances at 6-10 minute resolution depending on the instrument software time interval.
The AERI radiances only allow thermodynamic retrievals to a height of three kilometers, 
above this altitude Rapid Update Cycle (RUC) NWP analyses are used.  No retrievals
are possible during precipitation or low clouds.  A metadata field called
"profile_source_flag" indicates the altitude the AERI radiance influences each profile.
Temperature rms differences compared to radiosonde is ~1K and water vapor
mixing ratio differences are ~ 5%.

DATA FORMAT:

The AERIplus retrieval data format is netcdf.  This is version 3.0 of IHOP AERIplus
retrieval processing submitted 4/28/2003.


STATION LOCATIONS:

Site                Elevation (m)      Lat.     Long.   
------------------------------------------------------
Hillsboro, KS: BF-1     447          38.305N   97.301W 
Vici, OK: BF-4          622          36.071N   99.204W 
Morris, OK: BF-5        217          35.688N   95.856W 
Purcell, OK: BF-6       344          34.985N   97.522W
Lamont, OK: CF-1        316          36.606N   97.485W
 

REFERENCES:

Feltz, W. F., W.L. Smith, R.O. Knuteson, H.E. Revercomb, H.M. Woolf, and H.B. Howell, 
   1998: Meteorological applications of temperature and water vapor retrievals from 
   the ground-based atmospheric emitted radiance interferometer (AERI). J. Appl. Meteor., 37, 857-875.

Feltz, W. F. and J. R. Mecikalski, 2002:  Monitoring High Temporal Resolution Convective 
   Stability Indices Using the Ground-based Atmospheric Emitted Radiance Interferometer (AERI) 
   During the 3 May 1999 Oklahoma/Kansas Tornado Outbreak. Wea. Forecasting, 17, 445-455.

Feltz, W. F., H. B. Howell, R. O. Knuteson, H. M. Woolf, and H E. Revercomb, 2003:  
   Near Continuous Profiling of Temperature, Moisture, and Atmospheric Stability using the 
   Atmospheric Emitted Radiance Interferometer (AERI). . J. Appl. Meteor., 42, 584-597.

Smith, W.L, W.F. Feltz, R.O. Knuteson, H.E. Revercomb, H.B. Howell, and H.M. Woolf, 
   1999: The retrieval of planetary boundary layer structure using ground-based infrared spectral 
   radiance measurements.  J. Atmos. Oceanic Technol., 16, 323-333.

Turner, D. D., W. F. Feltz, and R. A. Ferrare, 2000: Continuous Water Profiles from Operational 
   Ground-based Active and Passive Remote Sensors. Bull. Amer. Meteor. Soc., 81, 1301-1317 .