Staff Notes Daily Calendar Events

Monday, August 4, 2014 - 1:00pm

Opt 1: July 30, 2014, 1-4 pm, CG1-3131
Opt 2: August 4, 2014, 1-4 pm, ML-Damon
Instructor: Rebecca Swisher, UCAR Pres Office/Communications

Overview: Change is everywhere!  We CAN manage change effectively personally and professionally by applying the Prosci ADKAR model - Awareness, Desire, Knowledge, Ability and Reinforcement.  During this interactive, hands-on workshop, you will learn how to: Assess your organization's readiness for change; Develop a change management plan using ADKAR; Involve your sponsors; Communicate the change; Manage resistance to change; and Engage your department, lab or program in the change.

This workshop is open to everyone and is especially valuable for managers/supervisors, project and team leads.

Register at EOD Training Catalog via Connect
(UCAS login>Training Catalog>Search by class name>Details>Enroll in desired date option)

Rebecca Swisher
Type of event:
Mesa Lab

Posted by Cheryl Cristanelli ( at x3036
Lab/division hosting the event:
UCAR, UCAR President's Office, Comms
Affiliation or organization:
Tuesday, August 5, 2014 - 3:30pm

Cirrus cloud formation and evolution from the microscale to the synoptic scale

Minghui Diao

NCAR Advanced Study Program (ASP)

Earth Observing Laboratory

Cirrus clouds, covering ~30% of the Earth’s surface, play important roles in Earth’s climate, weather and atmospheric chemistry. As a major uncertainty in climate models, the magnitude and sign of cirrus clouds’ radiative forcing (cooling or warming) are influenced by both their microphysical properties (such as ice crystal number density and size distribution) and the larger scale characteristics (such as horizontal and vertical extent). However, it is challenging to understand these multi-scale processes due to the limited spatial and temporal coverage of in-situ observations.

In this work, we link in-situ observations with the meteorological background using reanalysis data. Two formation mechanisms are found for cirrus clouds’ initial conditions - ice supersaturation. These two mechanisms show different dynamical conditions (large scale uplifting versus small scale waves/turbulences), as well as mixing of different air masses (tropospheric mixing versus stratospheric-troposphere mixing). Jet stream and the extratropical tropopause are found to play important roles in setting these dynamical conditions.

Besides the regional analyses, we conduct a hemispheric comparison on cirrus cloud formation and evolution (Diao et al. 2013, 2014). Our work is motivated by the question of “are there any differences in cirrus cloud formation and evolution, given that the Northern Hemisphere has ~10 times higher aerosol loading than the Southern Hemisphere?” Comparisons of relative humidity, ice crystal number density and mean diameter, as well as the relative lifetime of cirrus will be shown. 

 Tuesday, 5 August 2014, 3:30PM

NCAR - Foothills Laboratory

3450 Mitchell Lane

Bldg 2 Small Seminar Room (FL2-1001)

Minghui Diao
Type of event:
Foothills Labs

Posted by Whitney Robinson ( at x8713
Lab/division hosting the event:
Affiliation or organization:
Sunday, August 10, 2014 - 12:00pm

The NCAR Community Art Program cordially invites you to the opening art reception of The Fresh A.I.R. Show: Artists In Recovery group exhibit.

This divergent group of 20 professional artists from Boulder County share a common bond, they belong to a special fellowship. All are active members of a long-term addiction-recovery program. Their bond is that each artist has successfully re-discovered the joy of life and freedom from addictive behavior. The theme of this show is “Through Art, Visions, and Dreams the Light Comes Through” which speaks to the special role art, spirituality, and “seeing the light” is to their spiritual journey.

The opening art reception is Sunday August 10, 2014 from Noon to 4:00 pm in the NCAR Mesa Lab caferteria.

Come meet the artists and hear their stories as you enjoy their creations. 

NCAR Community Art Program
Type of event:
Mesa Lab

Posted by Audrey Lewis ( at x2570
Lab/division hosting the event:
Affiliation or organization:
Monday, August 11, 2014 - 3:30pm

Using the WRF Model to Investigate Climate Change Influence
on the Track and Intensity of Hurricane Sandy

Gary M. Lackmann
Department of Marine, Earth, and Atmospheric Sciences
North Carolina State University
Developmental Testbed Center, August 2014

Hurricane Sandy was associated with historic societal impacts when it made landfall
along the New Jersey shore in late October 2012. The event generated vigorous
discussions as to whether the severity, or perhaps occurrence, of the event was tied to
anthropogenic climate change. Two related questions are (i) whether the frequency of
this type of event is altered by anthropogenic climate change, and (ii) if the synoptic
pattern accompanying Hurricane Sandy had taken place 100 years ago (or 100 years in
the future), how would the track, intensity, and impacts have differed? Here, we
investigate question (ii) using a simplified approach that is designed to quantify the
storm-scale changes attributable to large-scale thermodynamic changes. First, hypotheses
are presented as to how and why we would expect climate change to alter Sandy’s track
and intensity. An ensemble of WRF model simulations, in conjunction with GCM derived
large-scale thermodynamic changes, is used to analyze changes between current, past, and future versions of Sandy.

The impact of climate change on the synoptic steering features suggests offsetting
processes. Warming and increased precipitation/condensational heating would strengthen
the downstream ridge to the north of Sandy, resulting in stronger westward motion.
Diabatic weakening of an upper-level trough to the south of Sandy would have the
opposite effect. Increased upper-level westerly flow would lead to more progressive
synoptic features, suggesting a more eastward track with warming. Numerical
experiments are required to determine which effect, if any, dominates. For this
presentation, I will explore some of the WRF features that enable skillful simulations of
the storm. Results indicate that climate warming to date had limited effect on the
observed Sandy, but that projected future warming would result in a significantly
stronger storm with a more northward landfall location. Research to date has not directly
addressed the question of climate-change influences on Sandy’s genesis or early track

Date:     Monday, August 11, 2014
Time:     3:30pm
Place:    FL 2 Rm 1022

Gary Lackman
Type of event:

Posted by Marybeth Zarlingo ( at x2751
Lab/division hosting the event:
Affiliation or organization: