A new Delphi has been posted about: merit raises vs compa-ratio.
To learn more about Delphi, visit the Delphi website.
A new Delphi has been posted about: merit raises vs compa-ratio.
To learn more about Delphi, visit the Delphi website.
Posted by Sharon Clark at ext. 2948, sclark@ucar.edu
Split Pea Soup
Here is another great fall recipe, this one is vegetarian but can also be made with other types of bacon. Soup season is just around the corner (.. or here already!)!
Lazaro Lopez, Foothills Assistant Chef
Link to Recipe:
Link to Shared Collection of Recipes:
Event Services, What’s Cooking?!
Or access them through our UCAR Event Services website here
Posted by Sylvia Ng at ext. 1158, sylviang@ucar.edu
Title: Tropical Cyclogenesis Predictability and Shallow Cumulus Organization from the Perspective of Multiscale Processes
Speaker: Pornampai (Ping-Ping) Narenpitak, NOAA Earth System Research Laboratories
Date: Thursday, 29 October 2020
Time: 3:30 pm - 4:30 pm
For Zoom viewing access contact Nancy Sue Kerner, nskerner@ucar.edu
Abstract:
Convective organization occurs at various scales in different cloud systems. The spatial inhomogeneity of the clouds suggests that convective organization can be viewed as interactions of multiscale processes. This seminar combines my recent and ongoing studies that use the System of Atmospheric Modeling (SAM) with different domain sizes and resolutions to study tropical cyclogenesis predictability and explore mesoscale organization of marine shallow cumuli from this perspective.
In the first part, a near-global aquaplanet cloud-resolving model (NGAqua) is used to investigate tropical cyclogenesis and its predictability. This study analyzes an ensemble of three 20-day NGAqua simulations, with initial white-noise perturbations of low-level humidity. Tropical cyclones (TCs) in NGAqua develop spontaneously from the northern edge of the intertropical convergence zone (ITCZ), where interactions between large-scale flows and tropical convection provide necessary conditions for barotropic instability. Zonal bands of positive low-level absolute vorticity organize into cyclonic vortices, some of which develop into TCs. A vortex-following framework analysis shows that vertical stretching of absolute vorticity due to convective heating contributes positively to TCs’ vorticity spinup. A case study and composite analyses suggest that sufficient humidity is key for convective development. Tropical cyclogenesis in these three NGAqua simulations undergoes the same series of interactions. The locations of cyclonic vortices are broadly predetermined by planetary-scale circulation and humidity patterns associated with ITCZ breakdown, which are predictable up to 10 days. Whether and when the cyclonic vortices become TCs depend on the somewhat more random feedback between convection and vorticity, which occurs at a much smaller scale.
In the second part, Lagrangian large eddy simulations of trade cumulus organization observed during the Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign (ATOMIC) are presented. ATOMIC was designed to understand the relationship between shallow convection and large-scale environments in the trade wind region. It is the U.S. counterpart of the European field campaign called EUREC4A and took place in January – February 2020. The simulations presented here are driven with ERA5 reanalysis large-scale meteorology and ATOMIC in-situ aerosol data. The results are used to explore different states of trade cumulus organization and address the transition between different states from the perspective of multiscale processes.
Seminar will also be live webcast: https://operations.ucar.edu/live-mmm
Recorded seminar link can be viewed here: https://www.mmm.ucar.edu/events/seminars
Posted by Nancy Sue Kerner at ext. 8946, nskerner@ucar.edu
Xdev is hosting one hour tutorial sessions scheduled for the 2nd and 4th Wednesdays of each month at 1 PM Mountain. The next tutorial session, covering how to create your first Python data dictionary, will be on October 28th. For more information or to sign up for events and updates visit the Xdev blog - https://ncar.github.io/xdev/posts/tutorial-seminar-series/
Posted by Julia Kent at ext. 2488, jkent@ucar.edu
Even though it won't be at the Mesa Lab this year, Super Science Saturday will prove that "Science is Everywhere", when we bring it virtually from our homes to yours on November 7!
We're planning a full day (10am-4pm) of short online demos and activities for kids every half-hour throughout the day, including the physcis of a Medieval trebuchet, extreme cloud formation, rocket propulsion, and a special guest appearance by Mike Nelson of Denver 7!
We're finalizing the schedule, which will be posted along with the livestream link on the SSS page very soon: https://scied.ucar.edu/events/2020-super-science-saturday
Contact Tiffany Fourment with any questions, and please spread the word!
Posted by Tiffany Fourment at ext. 2401, tiffanyf@ucar.edu
The U-Engage! Book Club is excited to announce our pick for December: How to Change Your Mind by Michael Pollan
When LSD was first discovered in the 1940s, it seemed to researchers, scientists and doctors as if the world might be on the cusp of psychological revolution. It promised to shed light on the deep mysteries of consciousness, as well as offer relief to addicts and the mentally ill. But in the 1960s, with the vicious backlash against the counter-culture, all further research was banned. In recent years, however, work has quietly begun again on the amazing potential of LSD, psilocybin and DMT. Could these drugs in fact improve the lives of many people? Diving deep into this extraordinary world and putting himself forward as a guinea-pig, Michael Pollan has written a remarkable history of psychedelics and a compelling portrait of the new generation of scientists fascinated by the implications of these drugs. How to Change Your Mind is a report from what could very well be the future of human consciousness
We will have limited availability to provide a copy of this book. These will be provided on a first come, first serve basis. All other readers will be responsible for obtaining a copy of the book on their own.
You can vote for future books by signing up. You are welcome to participate in discussions even if you do not sign up.
We will meet on Wednesday, December 9th from 3:00 PM - 4:00 PM to discuss the December book.
Please reach out to Devon Duncan or Karrey Van Sky if you have questions.
Posted by Devon Duncan at ext. 8716, devonduncan@ucar.edu
We invite you to join us for a virtual workshop led by El Museo de las Americas to learn more about Dia de los Muertos on Thursday, October 29th from 11am - 12pm. The workshop will be a half hour presentation about the history and culture of Dia de los Muertos, followed by a half hour crafting activity and time for questions.
Register online through this google form by Wed., Oct 28th 5pm. This event will be a live virtual webcast. Please register to receive an email reminder with the link to the webcast and details on how to participate. https://forms.gle/bgVM8qPcxA8SuGFBA
To prepare for the workshop: Please gather the following materials ahead of time to participate in the activity portion of the event: Tissue paper or regular paper (cut into squares roughly 4x4); Pipe cleaners or chopsticks/pencils; a rubber band; scissors.
Posted by Lorena Medina Luna at ext. 1609, lluna@ucar.edu
Title: Slow Modes of Global Temperature Variability in Regions of Weak Radiative Feedbacks
Speaker: Robert Jnglin Wills, University of Washington
Date: Tuesday, 27 October 2020
Time: 11 am -12 pm
For Zoom viewing information contact Tracy Baker, tbaker@ucar.edu
Abstract: Acting as both signal and noise, internal climate variability may confound estimates of the climate response to forcing but offers an opportunity to examine the dynamics controlling Earth's energy budget. We analyze the impact of low-frequency internal variability on global-mean surface temperature (GMST) and top-of-atmosphere (TOA) radiation in CMIP6 pre-industrial control simulations. Slow modes of variability are identified using low-frequency component analysis. The slow modes of variability with the largest impact on decadal GMST anomalies are focused in high-latitude ocean regions, where they have a minimal impact on global TOA radiation. When these regions warm, positive shortwave cloud and sea ice-albedo feedbacks largely cancel the negative feedback of outgoing longwave radiation, resulting in a weak net radiative feedback. The weak net radiative feedback means that less energy is required to sustain these long-lived temperature anomalies. These results suggest that on decadal and longer timescales, different processes control internal variability in GMST than control internal variability in global TOA radiation. We also discuss the contribution of low-frequency internal variability to uncertainty in estimates of climate sensitivity from decadal-mean anomalies in GMST and TOA radiative imbalance.
For more information contact Tracy Baker, tbaker@ucar.edu, 303-497-1366
Posted by Tracy Baker at ext. 1366, tbaker@ucar.edu
It's a great time to start learning. Your colleagues at UCAR already take advantage of LinkedIn Learning. Activate your profile and learn something new today.
Workday Learning and LinkedIn Learning FAQ
If you have questions about accessing courses or getting started with LinkedIn Learning, please contact Devon Duncan.
Posted by Devon Duncan at ext. 8716, devonduncan@ucar.edu
A video of the “Object Storage Systems and Their Effects on Future Workflows” CISL Seminar is now available on the seminar web page. CISL system and software engineers presented the one-hour virtual seminar October 21 to discuss object storage systems, how they differ from POSIX file systems, and use cases for both types of storage.
Presenters included Bill Anderson from the CISL High Performance Computing Division and Bob Dattore and Riley Conroy from the Information Systems Division.
Posted by B.J. Smith at ext. 1273, bjsmith@ucar.edu
NCAR is managed by the nonprofit University Corporation for Atmospheric Research on behalf of NSF and the UCAR university community.