Staff Notes Daily Announcements

Effects of mesoscale turbulence on carbon export: a global perspective
Cheryl Harrison, NCAR/CGD

Tuesday, 30 May 2017
11:00 AM, refreshments at 10:45
Mesa Lab, Main Seminar Room

Live webcast:
For more information, contact Gaylynn Potemkin, email, phone: 303.497.1618

Posted by Gaylynn Potemkin at ext. 1618,

Friday, May 26, 2017 to Wednesday, May 31, 2017

Video Compression of Ocean Simulation Databases: A Case Study in Automating Image-based Perceptual Experiments

Terry Turton
University of Texas at Austin

Climate research requires monitoring a large range of spatial and temporal scales to understand the climate system and potential future impacts. Climate simulations are now run with very high resolution (1–10 km gridcells) ocean, sea ice, and atmosphere components and can easily produce petabytes of output.  Image databases can decrease storage sizes from petabytes of simulation output down to several hundred gigabytes of images.  Video compression can be used to further decrease database sizes by several orders of magnitude.  Post-compression image quality can be assessed through common quality metrics.  Additionally, a crowdsourced perceptual assessment of the visual image quality is compared to expert feedback.   The perceptual assessment leverages the Evaluation Toolkit (ETK), a repository of open-source JavaScript modules designed to automate image-based perceptual evaluations.   Other approaches to the assessment of compressed climate data visualizations utilizing ETK modules will be discussed. 


Dr. Terece Turton received her Ph.D. in Physics from the University of Michigan with an early career in high energy physics.  Now a researcher in the Center for Agile Technology at the University of Texas at Austin, her current research area is user evaluation for scientific visualization.  With color playing such a vital role in scientific visualizations, Dr. Turton has teamed with the Data Science at Scale team at Los Alamos National Lab together with a visual artist specializing in color to develop and validate improved colormapping approaches, allowing greater perceptual depth into scientific visualizations.  In order to facilitate user studies by other visualization researchers, Dr. Turton has developed a suite of open-source modules that embody a range of psychophysical approaches to perceptual evaluation, the Evaluation Toolkit. 

Wednesday, June 7, 2017
10:00 a.m.-11:00 a.m.
Mesa Lab, Main Seminar Room

Posted by Michelle Patton at ext. 1253,

Friday, May 26, 2017 to Wednesday, June 7, 2017

An Integrated Data-Driven Modeling System to Study and Predict the Circulation, Productivity and Climate of the Red Sea
Ibrahim Hoteit
King Abdullah University of Science and Technology (KAUST)

The talk will present the integrated data-driven modeling and forecasting system that we have developed to study and understand the physical and biological variability of the Red Sea. I will first describe the modeling system and summarize our key findings on the Red Sea general circulation, including the striking seasonally overturning circulation, the dominant eddy activity, and the occasional northern deep water formation events, and discuss their impact on the Red Sea ecosystem. I will then focus on our efforts to develop an efficient ensemble data assimilation and forecasting system for the Red Sea, presenting recent algorithmic developments and results, and discussing our future plans. 

Wednesday, June 7th, 2017
12:00pm – 1:00pm
Mesa Lab, 680 -Penthouse
(Bring your lunch)


Posted by Michelle Patton at ext. 1253,

Friday, May 26, 2017 to Wednesday, June 7, 2017

The 2017 Bike to Work Day Business Challenge has officially begun! Take two minutes now to register here with Team NCAR|UCAR to help showcase just how much we value biking within our organization and throughout the broader community.

More than 1,000 businesses across Colorado are participating in the Bike to Work Day (BTWD) Business Challenge, including our BTWD rivals, NOAA and NIST. The more people that register with Team NCAR|UCAR, the better we do in the competition. It’s that simple and the best part is that when you register, you will automatically be entered to win some amazing prizes.

Prizes will be drawn every week starting on June 1st, so register now to make sure you don’t miss out. You could win an electric bike, concert tickets, a night at the Brown Palace, and if you are really lucky, a 2-person trip to Croatia! Details on the full list of prizes can be found here.

UCAR’s Sustainability Team is also hosting a bonus prize drawing exclusively for registered NCAR|UCAR staff. Prizes include a Fitbit Flex ($40 value), five $10 cafeteria coupons provided by UCAR Event Services, and more! Winners will be announced via Staff Notes each week in June.

Bike to Work Day is Wednesday, June 28th. Join the fun here!

Posted by Chelsea Castellano at ext. 8549,

Thursday, May 25, 2017 to Friday, June 2, 2017

We hope that everyone in our organization will participate and take the workplace culture survey. Since we are unable to translate the survey into every language, National Research Center (NRC) is going to hold a proctored session on Thursday, June 1 from 10am  to 11am in FL2 1003 for those who would like assistance with the questions. To help maintain anonymity there will only be a member of NRC staff present to help anyone who may wish to have additional assistance in understanding and reading through the culture survey. If you would like additional assistance but cannot attend this scheduled session, please email Kristen Luna Aponte ( to find a solution for additional assistance. If you plan to attend this session please RSVP to Kristen Luna Aponte so we can plan accordingly with NRC.

Posted by Kristen Luna Aponte at ext. 1657,

Thursday, May 25, 2017 to Wednesday, May 31, 2017

ACOM - MMM Joint Seminar
Eric Girard, Department of Earth and Atmospheric Sciences, University of Quebec at Montreal
Title: Aerosol-Cloud-Radiation Interactions in the Arctic: Imprtance of the ice nucleating particles (INP)

Abstract: Cloud microstructure is strongly linked to the aerosols and their ability to nucleate liquid water (CCN) or ice (INP). Cloud phase is mostly determined by the aerosol thermodynamic properties. It is therefore important to understand these aerosol-cloud interactions since they determine cloud phase and cloud radiative forcing. In this talk, I will first give a brief overview of the aerosol indirect radiative effects and then focus on the INP deactivation effect within ice clouds and its effect on clouds and radiation. Simulations and observations of the deactivation effect during the ISDAC Campaign in April 2008 will be presented. Results show the importance of the INP parameterization used in models and the need to consider the chemical composition of the aerosols. In a second modelling study, the Weather and Research Forecasting Model coupled with chemistry (WRF-CHEM) is used to simulate the INP concentration observed during the NETCARE field experiment that took place over the Canadian Arctic near Baffin Island in July 2014. WRF-CHEM simulates several gases and particle matters relevant for ice nucleation. Using this information combined to parameterizations based on field and laboratory studies, it is shown that the model simulates within a factor 5 to 30 the observed INP concentration depending on the ice nucleation parameterization used. Results suggest that large particles are the main contributor to the INP concentration suggesting that a bin scheme for the simulation of the aerosol size distribution is needed to get more realistic INP values.

Monday, 12 June, 3:30pm
Live webcast:

Posted by Bonnie Slagel at ext. 8318,

Tuesday, May 23, 2017 to Tuesday, June 13, 2017

Human Subjects Research
2017 Annual Training
June 6, 1:30 - 3:00 pm

Are you undertaking research that involves human subjects?  Do you need a refresher on the federal human subject research regulations?

Attend the annual training to learn about the federal regulations and how the institutional review board, known as the UCAR Human Subjects Committee (HSC), works at UCAR.

For questions, please contact: Kelly Coleman, ext: 8870

Posted by Christy Locke at ext. 8874,

Tuesday, May 23, 2017 to Monday, May 29, 2017

NCAR|UCAR colleagues were saddened to hear news of the death of Med Medrud on April 18 at the age of 92. He retired from NCAR in 1989 after more than 20 years as a meteorologist and manager, first in the Atmospheric Technology Division (now EOL) and later in the Atmospheric Chemistry Division (now ACOM). In a note with news of his passing, retired NCAR staff member Teresa Rivas recalled that Med "always had a smile and a kind word for everyone."

A memorial service of worship will be held Saturday June 3, at 1:00pm at the Boulder Friends Meetinghouse, with a simple reception to follow. An obituary has been posted on the Daily Camera's website. 

Posted by Zhenya Gallon at ext. 8607,

Tuesday, May 23, 2017 to Saturday, June 3, 2017

NCAR Senior Scientist Warren Washington was honored over the weekend at the Colby College commencement ceremony, where former Vice President Joe Biden delivered the commencement address. See a picture of the event in Staff News.

Posted by Laura Snider at ext. 8605,

Tuesday, May 23, 2017 to Tuesday, May 30, 2017

The Bonfils Blood Center mobile bus will visit CG1 on Monday, June 12.  The bus will be located on the north side of CG1.  Appointments are available between 9:00 a.m. and 2:30 p.m.  The bus will be closed between 11:00 a.m. and noon.

If you would like to donate, please contact Laurie Carr to make an appointment.  Please review the blood donation guidelines below.

Bonfils Blood Center Donation Eligibility Guidelines

Posted by Laurie Carr at ext. 8702,

Monday, May 22, 2017 to Tuesday, May 30, 2017