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Project #2001-161 EPIC 2001

Eastern Pacific Investigation of Climate Processes in the Coupled Ocean-Atmosphere System

Principal Investigators: David Raymond, et al.

NSF/NCAR EC-130Q Hercules (N130AR)

Documentation Summary

This site has the final documentation for the airborne measurements obtained from the NSF/NCAR Research Aviation Facility (RAF) EC-130Q Hercules aircraft (Tail Number N130AR) during the EPIC 2001 project which took place from 3 September to 10 October 2001.

Notice:  Release date: 23 April 2002

The entire EPIC2001 flight-level data set for the EC-130Q has been reprocessed due to a dry bias in the reference moisture measurements. After detailed analysis and recalibration, it was determined that the reference dew/frost point sensor for this project, in general, was measuring about 1.5° C lower than true.

Virtually all of the moisture measurements are affected, including the Lyman-alphas, since the reference is used to remove their long-term drift.

The new data set was released on 23 April 2002. You may also check the link "Updated Pages on this web site".


The standard, low-rate (LRT), 1 sample per second (sps) data set for all flights is now available via 'ftp' or on magnetic tape, upon request. Access is also possible through individual science accounts with the NCAR Scientific Computing Division. Software is available at RAF to view these data in a summary format.

High-rate (HRT, 25 sps) data for selected flights are now available. Additional HRT data can be made available on a flight-by-flight basis in response to individual requests by the project participants.

Both the raw and production output data have been archived to the NCAR/SCD Mass Store System (MSS) which has proven to be extremely reliable. However, we strongly urge data recipients to make their own archival copies to protect against damage or loss.

As you proceed with analysis of your data, you may have questions, encounter problems, or uncover discrepancies or other aspects of the data set that may be of interest to the RAF and to other users. We ask that you bring these issues to the attention of the project managers or the RAF Manager:

Allen Schanot, (303)497-1063
Jeffrey L. Stith, Ph.D, (303)497-1032, Research Aviation Facility Manager
FAX phone number: (303)497-1092
Mail address:
National Center for Atmospheric Research
EOL/Research Aviation Facility
P. O. Box 3000
Boulder, CO 80307-3000
U. S. A.

We are pleased to serve as major providers of information to the EPIC 2001 program, as it was an exciting project. We look forward to assisting you and the other investigators as the analysis of those data proceeds. If I can be of further help, please do not hesitate to call.


Jeffrey L. Stith, Ph.D.
Manager, Research Aviation Facility

EPIC2001 Home Page | RAF's EPIC2001 Page | RAF Home Page | EOL Home Page | NCAR Home Page

Last update: Tue Jul 13 11:35:31 MDT 2004