EOL Seminar - Evolution of the Great Plains Nocturnal Low-Level Jet and Return of Unstable Conditions after a Cold Frontal Passage

SPEAKER:      Chris Rattray - Masters Student, School of Meteorology, University of Oklahoma

DATE:              January 19, 2021

TIME:               3:30 - 4:30 pm

WEBCAST:     operations.ucar.edu/live-eol (Will be recorded and uploaded to the EOL Youtube channel)

QUESTIONS:  During the seminar, you will have the opportunity to ask questions via Slido

ABSTRACT

This study investigates the evolution of the Great Plains nocturnal low-level jet (NLLJ) as warm, moist flow returns following a cold frontal passage. The study utilizes the ERA-5 reanalysis and 3-h radiosonde data taken during the International H2O Project field campaign. This talk will present new insight into the processes controlling the NLLJ intensity and structure including the possible role of variations in water vapor and radiative processes. The results also show that two mechanisms resulted in the destabilization of the nocturnal environment, weak (2 cm/s) ascent and differential advection, with implications for the eastward movement of nocturnal convection over the region.

If you have any questions about the seminar, reach out to Jacquie Witte or Melissa Ward.

 

Type of event:

Announcement Timing: 
Thursday, January 14, 2021 to Tuesday, January 19, 2021
Calendar Timing: 
Tuesday, January 19, 2021 - 3:30pm to 4:30pm MST

Posted by Melissa Ward at ext. 8713, mward@ucar.edu

Quick Facts

NCAR is managed by the nonprofit University Corporation for Atmospheric Research on behalf of NSF and the UCAR university community.

  • NCAR is not a federal agency and its employees are not part of the federal personnel system.
  • Our activities complement those of the federal agencies and we work closely with them.

More about us