IHOP_2002 Profiler/Sodar: Homestead AERIBAGO Data (Homestead) [U Wisc] ====================================================================== 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 an Atmospheric Emitted Radiance Interferometer (AERI) groundbased instrument 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 is in daily files for the Homestead site. 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. 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 .