Staff Notes Daily Announcements

ACOM Seminar

Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) Campaign: Objectives, Measurements Strategy, and Preliminary Findings

Jerome Fast
Pacific Northwest National Laboratory


This talk describes the objectives, measurement strategy, and preliminary findings from the Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) campaign that was conducted in May and September of 2016 near the DOE’s Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site located in Oklahoma. Current shallow and deep convective cloud parameterizations used by regional and global models contain uncertainties resulting from insufficient coincident data that couples cloud macrophysical and microphysical properties to inhomogeneity in land use and ecosystems, boundary layer turbulence, and aerosol properties. Rather than targeting a narrow set of processes, the goal of the HI-SCALE campaign was to provide a detailed set of aircraft and surface measurements needed to obtain a more complete understanding and improved parameterizations of the lifecycle of shallow clouds. Aerosol and aerosol precursor measurements on the research aircraft included a High Resolution Time-of- Flight Aerosol Mass Spectrometer (HR-ToF- AMS), a single particle mass spectrometer (miniSPLAT), various size distribution instruments, a cloud condensation nuclei (CCN) particle counter, a chemical ionization mass spectrometer (CIMS), as well as O3, SO2 , NO, NO2 , and CO. Similar measurements were continuously collected at the surface. The sampling was done in two periods, one in the spring and the other in the late summer to take advantage of variations in the “greenness” for various types of vegetation, new particle formation, anthropogenic enhancement of biogenic secondary organic aerosol (SOA), and other aerosol properties.

Preliminary findings using the HI-SCALE data will be presented. The aircraft measurements will be coupled with extensive routine ARM SGP measurements as well as Large Eddy Simulation (LES), cloud resolving, and cloud-system resolving models. Ultimately, these integrated analyses and modeling studies will shed light on the effects of inhomogeneity in land use, vegetation, soil moisture, convective eddies, and aerosol properties (size distribution, composition, mixing state) on the evolution of shallow clouds. This includes the feedbacks of cloud radiative effects on the surface heat, moisture, and momentum fluxes and on aerosol photochemical processes via changes in the downwelling radiation.

Monday, 26 June 2017, 3:30pm
NCAR Foothills Laboratory
3450 Mitchell Lane, Boulder
FL2-1001, Small Auditorium
Live webcast:

Posted by Bonnie Slagel at ext. 8318,

Friday, June 23, 2017 to Monday, June 26, 2017

The Up the Hill Race is on Friday August 18, 2017!

The EAC is looking for volunteers to help with the event, so we have scheduled a time for employees to visit us for an informational meeting and an opportunity to learn more about how you can volunteer this year! Pizza will be served at the meeting; please RSVP your attendance by Monday, 6/26/17 if you plan on eating lunch with us.  RSVP here.

Meeting Information:
Time: 12:00 - 1:00 PM
Location: CG1-1214-North-Auditorium
*Please be prompt, as we're starting at 12pm sharp. There's a lot of information to cover and we want to be courteous of everyone's time/lunch break.

If you can't attend this meeting, but still want to help, please contact Toni Wallace,

Posted by Toni Wallace at ext. 8716,

Friday, June 23, 2017 to Wednesday, June 28, 2017

Parents’ Night Out is a great opportunity for you and your significant other to go out to dinner and a movie!

Contact Stephanie Ivancic, Director of UCAR’s Child Care Center, to sign your child up from 6 pm - 8 pm ($30 for one child or $40 for two children) or 6 pm - 10 pm ($50 for one child and $60 for two children).

Children are welcome to wear their pajamas for a fun evening of movies and pizza! If your child has a video that he or she would like to share, bring it along! Please make sure it is labeled and let the fun begin! Siblings under the age of 7 are welcome, too.

We invite all UCAR employees to take advantage of this fun evening as your child does not need to be enrolled at the UCAR Child Care Center to partake! 

Please contact Stephanie Ivancic for enrollment as well as drop-in care rates.  Stephanie’s email address is sivancic@cclc.comand her phone number is 303-443-5595.

Posted by Laurie Carr at ext. 8702,

Friday, June 23, 2017 to Friday, July 21, 2017

There will be a Celebration of Life for Stanley Ruttenberg on Saturday, July 1st in the ML Cafeteria, starting at 10:30 AM.  Starting in 1964, Stan worked at NCAR/UCAR for 30 years and built a house at the foot of the Mesa on Deer Valley Road (a  trail that he wore into the hillside is still visible via OSMP 'not a trail' signs!)  We will include some early history (and photos) of NCAR and its projects.  Any interested staff is invited to attend.

A full obituary is posted here:

Posted by Becky Ruttenberg at ext. 2816,

Friday, June 23, 2017 to Friday, June 30, 2017

Comparison of methods for updating intensity-duration-frequency curves using regional climate data at multiple spatial and temporal resolutions

Lauren Cook
Carnegie Mellon University

Intensity-duration-frequency (IDF) curves are a common input to engineering design, and are used to represent extreme rainfall in region. As rainfall patterns shift into a non-stationary regime as a result of climate change, these curves will need to be updated with future projections of extreme precipitation. Many regions have begun to update these curves to reflect the trends from downscaled climate models; however, few studies have compared the methods for doing so, as well as the uncertainty that results from the selection of the climate model, and its native grid scale and temporal resolution. This study will examine the variability in updated IDF curves for three locations (Pittsburgh, Seattle, and Phoenix) when the method for creation of future IDF curves is altered, as well as the underlying resolution (spatial, temporal) of the climate ensemble. Additional analysis will compare results using two emissions scenarios (RCP 4.5 and 8.5), climate model data sources (e.g., NA-CORDEX and NARCCAP), and downscaling techniques (dynamical v. statistical). Metrics for comparison include the resulting intensity of precipitation, as well as the effort expended to create the IDF curve. Finally, the resulting intensities will be used to design a stormwater retention basin using the TR-55 method (24-hour duration) and 50-year return period, in order to determine how the basin size is altered as the methods, models, and native resolutions change. 

Thursday, July 6th, 2017
12:00pm – 1:00pm
Mesa Lab, Chapman Room
(Bring your lunch)


Posted by Michelle Patton at ext. 1253,

Thursday, June 22, 2017 to Thursday, July 6, 2017

Please welcome and congratulate Jeff on becoming our newest volunteer Ombuds. He recently joined Loretta Quinn and Marijke Unger in providing this important service to all of NCAR|UCAR.

An Ombuds is an independent, neutral person who offers informal assistance to employees and visitors to help resolve issues related to their employment or appointment.

Jeff has been at the Unidata Program Center since 1998 and is currently a project manager in the Community Services group there. A graduate of UCAR's 2006 Leadership Academy, he is a member of the International Ombuds Association and practices in accordance with its codes and practices.

Find out more about Jeff, Loretta, Marijke, and the UCAR Ombuds Office here:

Posted by Zhenya Gallon at ext. 8607,

Thursday, June 22, 2017 to Friday, July 7, 2017

Effective 3/28/17, a new version 5-7 Travel (Concur) Policy and Procedures is applicable for all travel processed using Concur.  Revisions to the existing 5-7 Travel Policy & Procedures have been made to reflect new federal regulations, signature authority revisions, general updates related to the new software capabilities of Concur and the issuance of the new UCAR Travel Card.

To view a roadmap of changes from the existing Policy 5-7 Travel to the new 5-7 Travel (Concur) please read the UCAR Travel Policy and Procedure Changes.  The existing 5-7 Travel Policy & Procedure will remain available on the UCAR website until all travel booked using the old Travel Application has been completed and expensed.


Please visit the Concur User Support Resources site for details on how to utilize our new cloud hosted web-based travel system (Concur) and for a detailed list of FAQs.  For additional guidance, please contact the Travel Office at or call the Concur help desk at ext. 2121.

Posted by Patty Leslie at ext. 8570,

Thursday, June 22, 2017 to Friday, July 21, 2017

The summary of the May 22, 2017 President's Council meeting can be found here.

Posted by Peggy Stevens at ext. 8601,

Wednesday, June 21, 2017 to Friday, June 30, 2017

Clarifying the Role of Service Animals at Work: Policy Update 

In response to questions from staff regarding animals at work, the President's Council reviewed UCAR policy 4-3 on Facility Use at its May 22, 2017 meeting. The previous policy stated, “Canine companions for people with disabilities are permitted at all facilities; all other animals are banned.” At the meeting, the PC approved a modification to the policy that recognizes the role of service animals other than canines and includes the ADA definition of service animals as those trained to perform specific tasks for a person with a disability. The PC also discussed the pros and cons of broadening the policy to allow non-service animals in our facilities. However, federal guidelines for government-owned facilities (in Boulder, this includes Mesa Lab, Marshall Field Site and the Research Aviation Facility) are specific and follow Americans with Disabilities Act (ADA) guidelines, including the definition for service animals. Animals whose sole function is to provide comfort or emotional support do not qualify as service animals per the ADA definition. The updated policy that includes the ADA definition of service animals will ensure the policy is applied equitably to all UCAR and NSF facilities. For questions or concerns, please contact Melissa D. Miller, Vice President for Finance and Administration @ x8575 or e-mail at

Posted by Denise Moulton at ext. 8575,

Tuesday, June 20, 2017 to Thursday, July 20, 2017

Posted by Annette Lampert at ext. 8719,

Monday, June 19, 2017 to Friday, June 30, 2017