October 2, 2010 to October 18, 2010
Project Location: 
St. Cloud, MN
Project Description: 
 

Northern Autumn Plains Echo Patterns :: NAPEP

Principal Investigator :: Dr. Gregory D. Nastrom
Where :: St. Cloud State University; St. Cloud, MN
When :: 2 - 18 October 2010
Facility :: Doppler On Wheels


The Northern Autumn Plains Echo Patterns (NAPEP) project is a two week on-campus deployment of one of the Doppler on Wheels (DOW) radar trucks to St. Cloud State University in Minnesota. Observations from the DOW will be used to study warm and cold frontal structures including vertical and horizontal wind shear layers, evolution of the bright band during stratiform rain episodes, changes in polarimetric quantifies in relation to frontal boundary, and evolution of the boundary layer during clear-air episodes. DOW observations will be augmented with data from an instrumented meteorology tower and a meso-network of six surface stations in the St. Cloud area. The project targets primarily undergraduate students who are taking a Radar and Satellite Meteorology class.

Observations from the Doppler on Wheels (DOW) will be used primarily by the 18 undergraduate meteorology majors registered in Earth & Atmospheric Science 468: Radar and Satellite Meteorology. Some of the topics to be studied include warm and cold frontal structure including vertical and horizontal wind shear layers, evolution of the bright band during stratiform rain episodes, changes in polarimetric quantities in relation to frontal boundaries, and evolution of the boundary layer during clear-air episodes, among other possible topics.

St. Cloud State operates an instrumented 500-foot tower located near campus. Vertical profiles from the tower can be used to augment the DOW data for some of the studies mentioned above. Also, there is a meso-network of 6 surface stations in the St. Cloud area, within about a 10 km diameter, which can be used for some studies.

See the NAPEP Facility Request.

NAPEP Final Report

The DOW arrived at St. Cloud State University (SCSU) on Friday, 1 October 2010. Mr. Justin Walker, a trainer from Center for Severe Weather Research (CSWR), conducted training sessions on basic DOW start-up and data collection procedures for 17 students and 2 faculty on Saturday-Monday, October 2-4, in 2- or 3-hour sessions with 2 or 3 persons trained each session.

On Monday afternoon Mr. Walker conducted an hour-long classroon training session on SOLOii applications. This was followed by a 2-hour open laboratory session where students could practice SOLOii using data files furnished by CSWR. On Tuesday Mr. Walker and Dr. Greg Nastrom, the local PI for NAPEP, conducted numerous site surveys in the St. Cloud area to identify suitable sites to deploy the DOW for hands-on training and anticipating actual storm observations. In the early afternoon Mr. Walker conducted a second laboratory session on SOLOii. read the complete NAPEP Final Report.