Staff Notes Daily Announcements

Marine Ice Nucleating Particles: Implications for High Latitude Aerosol-Cloud Interactions

Christina S. McCluskey
Department of Atmospheric Science
Colorado State University

Large energy biases and uncertainties in future climate projections have been attributed to poor representation of cloud phase (ice or liquid) properties in global climate models (GCMs). Specifically, over high latitudes, such as the Southern Ocean, GCMs tend to predict too few clouds that do not reproduce the high supercooled liquid contents observed via satellite. Several processes govern cloud phase distributions, including the presence of atmospheric ice nucleating particles (INPs), or particles that initiate heterogeneous ice nucleation (IN). Sea spray aerosol (SSA), generated from wave breaking and bubble bursting at the ocean surface, is considered a unique INP source. Typical IN activity of SSA is lower than terrestrial aerosol, but laboratory and limited field measurements indicate that marine INP emissions may vary over orders of magnitude due to increased organic aerosol arising from oceanic biological productivity (i.e., phytoplankton blooms). Quantifying the role of SSA in natural INP populations, both regionally and globally, is a key gap in the scientific understanding of aerosol-cloud interactions in remote regions, where other INP sources (e.g., mineral dust) are absent.

In this presentation, I will discuss a series of studies aimed towards investigating the abundance and characteristics of marine INPs at varied latitudes, ranging from 65°S to 60°N, over the PacificOcean and at the Mace Head Observatory (MHO, Ireland). Aerosol and IN measurements from six ship campaigns are used to explore latitudinal variability in natural marine INP number concentrations. Strong variability in INP number concentrations and INP composition are observed and linked to clean marine versus terrestrial influences at the MHO. Investigations on the role of organic-rich plumes originating from biologically active oceans on marine INP emissions at the MHO and in the Southern Ocean will also be discussed. These findings advance the scientific understanding of the link between biological activity and marine INPs in the natural environment and illuminate marine INPs as a potentially important feature in remote ocean aerosol-cloud interactions

For those unable to attend, the seminar will be webcast live at:

Tuesday April 4, 2017 3:30pm
FL2-1022 Large Auditorium
3450 Mitchell Lane Boulder, CO 

Posted by Meghan Stell at ext. 2043,

Wednesday, March 29, 2017 to Tuesday, April 4, 2017

TIAA Individual Counseling Session at RAF is scheduled:

RAF – Conference Room
Tuesday April 4, 2017 from 9:00am - 4:00pm


To schedule a counseling session: Click here to schedule an appointment with TIAA or call their Scheduling and Service Group phone reservation center at: 1-800-732-8353. 


These sessions are in high demand, so if you have to miss your appointment, be sure to contact TIAA as soon as possible so they can fill your time slot.

Posted by Alyssa Fronk at ext. 8710,

Wednesday, March 29, 2017 to Tuesday, April 4, 2017

Concur Travel and Expense is now live so check out today's and tomorrow’s Concur Live Training opportunities!   Sign up by registering through Connect or drop into the class and register in person!

Here is today's schedule:

Requesting & Booking Travel:  Today in the ML-Main Seminar 1:30-2:30 p.m.

Expensing Travel & Requesting Reimbursement:  Today at ML-Main Seminar 3:00-3:30 p.m.

And tomorrow live training sessions include:

Going Mobile with Concur:  Wednesday, March 29 in FL2-1022 12:00-12:30 p.m.

Non-Employee Travel in Concur:   Wednesday, March 29 in  FL2-1002 1:00-2:00 p.m.

For a full list of the training and upcoming webinars, step-by-step guides, quick guides, and FAQs check out the Concur User Support Site!

Questions?  Contact your local Concur Coach for guidance, help and advice!

Posted by Helen Moshak at ext. 1112,

Tuesday, March 28, 2017 to Wednesday, March 29, 2017

UCAR's Event Services is self-funded, in-house service to our employees and visitors, and is committed to offering a high quality, diverse and reasonably priced cafeteria menu at each of our three Boulder campuses. We make every effort to procure goods and services from our suppliers in the most cost effective manner possible, while keeping our menu prices affordable. After conducting an analysis of the food costs based on industry standards, it is now necessary to implement a price increase due to the steadily rising food and supply costs. We last raised cafeteria menu prices in 2012 and as a result the increase in April is higher than we would like. Our on-going commitment to you (our customers) is to monitor food costs regularly with the intention to publish any increase in prices in a timely manner.

Effective April 3, there will be a price increase of between 16% and 18% on most menu items.

Event Services will continue to offer a variety of food and beverage choices, as well as provide a pleasant experience to our valued customers. Thank you for your continued patronage and support. If you have any suggestions, questions or comments, please contact Mike Albright at x1147.

Posted by Mike Albright at ext. 1147,

Tuesday, March 28, 2017 to Friday, March 31, 2017

Lower Back Pain Lunch & Learn Session

On April 6, join Dr. Lisa Brone, a Paladina Health physician, for a lunch and learn session to discuss lower back pain. 

Did you know? Lower Back Pain is a leading reason why individuals visit their physician. During this session, Dr. Brone will cover:

  • Understanding the difference between acute and chronic lower back pain
  • Learning the latest evidence for best treatments for lower back pain
  • Knowing when you might need an MRI vs. other therapy

Bring your own lunch and invite your colleagues. All employees are welcome to attend! This is great information for everyone. 

The session will be held on April 6 at CG1, Room 2126 from noon – 1:00 pm. The session will be webcast.


Posted by Alyssa Fronk at ext. 8710,

Tuesday, March 28, 2017 to Friday, March 31, 2017

WHO:  All staff who travel internationally

WHAT:  Don’t travel with data that is not needed for your trip. Don’t take export controlled or other sensitive or controlled data on international travel if it is not required and authorized.

WHY:  U.S. customs officials are authorized to search or retain electronic devices, including digital cameras, cell phones, media players, disk drives, flash drives, tablet devices, and laptops, even without probable cause, to look for violation of export control regulations as well as other laws and regulations. To prepare for this possibility:

  • Don’t carry data you don’t want others to see: medical records, research data files that cannot be published, financial information, photos, etc.
  • Before you travel, back up any data that you don’t want to lose.
  • Consider taking a minimal device (clean laptop) equipped with only ordinary, recognizable software and minimal data so any search can be fast.

CONTACT:  For further guidance view or download “International Travel with Devices and Data”, contact, or your ECC (Export Compliance Coordinator).

Posted by Rebecca Swisher at ext. 8609,

Monday, March 27, 2017 to Friday, March 31, 2017

Posted by Annette Lampert at ext. 8719,

Monday, March 27, 2017 to Friday, April 7, 2017

As part of the upcoming Rising Voices conference, and UCAR's NSF INCLUDES project, we are happy to announce a 1-day professional development opportunity on April 12th, here at NCAR, for any scientists interested in working with Native American populations. The day-long course will provide information about the cultural practices and customs of a range of Indigenous Tribes, explain the political workings of the Tribal Governments, and provide guidelines for how to interact appropriately and respectfully with Native American communities and students. 

The workshop is free to NCAR/UCAR staff, and lunch will be provided. Attendance from NCAR/UCAR is limited to 10 places.

If you are interested in registering for the workshop, please contact Kris Marwitz at For more information about the workshop, please contact Carolyn Brinkworth at

Posted by Carolyn Brinkworth at ext. 1670,

Monday, March 27, 2017 to Wednesday, April 12, 2017

The Mesa Lab semi-annual building maintenance shutdown is scheduled for Saturday, 15 April from 6:00 a.m. until 6:00 p.m.  During this time the Mesa Lab and Fleischmann Buildings will experience intermittent electrical, heating, and air conditioning interruptions, some for extended periods.

Access to the Mesa Lab will be restricted to authorized employees, and there will be no public access to the building.  Visitors may still use the trails around the building.

CISL/ISGB will be releasing information regarding the impact of the Mesa Lab Data Center portion of the shutdown in the near future as details become available. Please direct questions about the Mesa Lab Data Center to

Posted by David Maddy at ext. 1134,

Monday, March 27, 2017 to Thursday, March 30, 2017

On Saturday, April 8th, from 7am to 4pm,  NETS will be migrating the phone system to new hardware.  Call processing should remain fully functional during this work, however, please be aware of these potential impacts to the telephone system:

- It is possible that some calls in the process of being set up might drop, though established calls should not be impacted
- Do not make changes to your phone (forwarding, etc) during this maintenance window.  Any changes made to your phone during this window might be lost. 
- There will be intermittent access to the user options web page during this window

Voice messaging will be available throughout this entire window.

Posted by Paul Dial at ext. 1261,

Monday, March 27, 2017 to Friday, March 31, 2017