Staff Notes Daily Calendar Events

Monday, June 25, 2018 - 3:30pm

ACOM SEMINAR

Title: The Tropical Tropopause Definitions and Water Vapor Transport in the TTL: New Insights from Airborne in situ Measurements over the Tropical Western Pacific

Presenter: Laura Pan, Senior Scientist, ACOM

Abstract: The tropical tropoause region plays an important role in the Earth's climate system. The tempature and transport structure there control the amount of water vapor in the stratosphere, which has a significant contribution to the climate forcing. Correctly, representing the temperture structure in the tropical tropopause region is a significant challenge for the chemistry climate models. Understanding the controlling processes is a critical step for making progress. The ATTREX campaign provides a unique data set for examing our theory and hypothesis on the tropical tropopause and TTL. I will present an analysis of temperature, water vapor and ozone across the tropopause over the tropical Western Pacific (TWP) using the ATTREX 2014 observations. The analysis aims to address two connected questions:

(1) The cold point and the WMO lapse rate criteria, which one provides the "correct" definition for the tropical tropopause?
(2) Vertical versus horizontal transport processes, what are the relative importance for dehydration across the TTL?

These questions have been addressed in the past mostly through theoretical and model approaches. The new insights from the observational study on the these problems will be discussed.

Monday, 25 June 2018, 3:30 PM
Refreshments: 3:15 PM
NCAR Foothills Laboratory Large Auditorium - FL2-1022
Live webcast: https://ucarconnect.ucar.edu/live

 

 

Type of event:
Seminar/Symposium
Building:
FL2
Room:
1022

Posted by Bonnie Slagel (bonnie@ucar.edu) at x8318
Hosting lab/division or program:
ACOM
Will this event be webcast?
Wednesday, July 11, 2018 - 10:00am

Stochastic Evolutionary Algorithms Guided by Machine Learning for Atmospheric Source Detection

Guido Cervone
Pennsylavania State University

In this talk I will present a methodology based on evolutionary algorithms guided by machine learning for the characterization of atmospheric sources.  In traditional evolutionary (a.k.a. genetic) algorithms, a problem is optimized in parallel by maintaining a population of candidate solutions, which are evaluated according to an objective function, and evolved through selection operators and pseudo-random change operators.  In this talk, I will present a variant for evolutionary algorithms where the changes to candidate solutions are made through machine learning rule generation and instantiation.

Biography
Dr. Guido Cervone was born in Italy.  He received the B.S. in Computer Science from the Catholic University of America in Washington D.C in 1998., the M.S. in Computer Science and Ph.D. in Computational Sciences and Informatics with specialization in Knowledge Mining from George Mason University in Fairfax VA in 2000 and 2005 respectively.  

 
He is Associate Professor of Geoinformatics, Meteorology and Atmospheric Science at the Pennsylvania State University, University Park, PA. At Penn State, he serves as the Associate Director of the Institute for CyberScience, Director of the Geoinformatics and Earth Observation laboratory, and faculty affiliate of the Environmental and Energy Study Institute (EESI).  He is also Affiliate Scientist with the Research Application Laboratories (RAL) at the National Center for Atmospheric Research (NCAR) in Boulder, CO, and Adjunct Professor at the Lamont Doherty Earth Observatory (LDEO), Columbia University, in Palisades, NY. 
 
His expertise is in geoinformatics, machine learning and remote sensing, and his research focuses on the development and application of computational algorithms for the analysis of remote sensing, numerical modeling and social media spatio-temporal Big Data. The main problem domains are related to environmental hazards and renewable energy forecasting.
 
Refreshments will be served at 9:45am outside of the MSR!
 
Wednesday, July 11, 2018
10:00 a.m. - 11:00 a.m.
Mesa Lab, Main Seminar Room
Type of event:
Seminar/Symposium
Building:
Mesa Lab
Room:
Main Seminar Room

Posted by Kathy Peczkowicz (kathyp@ucar.edu) at x2431
Hosting lab/division or program:
CISL
Will this event be webcast?
No
Thursday, June 28, 2018 - 3:30pm

Speaker: Flavio Lehner
Affiliation: NCAR/RAL/CGD

The Southwestern US experiences substantial natural variability in precipitation and temperature, on timescales ranging from daily to decadal. This variability makes the environment for prediction and management of water resources – critical tasks to ensure the well-being of society in this water-scarce region – challenging. Strong trends from the 1980s to the 2010s from cool and wet to warm and dry conditions, have led to intermittent drought conditions and reduced streamflow predictability. These impacts have led to discussion about the role of anthropogenic climate change, and have also led to other initiatives such as policy-driven drought mitigation and new drought adaptation plans issued by federal agencies.

Here I will address three questions that the trends toward drying and warming have prompted: (1) How unusual are these trends? (2) Can we attribute these trends to anthropogenic climate change? (3) How can we use the answers to question (1) and (2) to increase the resilience of society to such trends in the future? Using tree-ring based reconstructions of hydroclimate, I document the influence of precipitation and temperature on streamflow during the several hundred years before instrumental records became available, providing a baseline for the role of internal versus externally forced climate variability. I then use a constructed circulation analog technique and a set of climate model simulations to dissect and attribute the recent trends. Finally, I will illustrate how we can use this information to improve operational seasonal streamflow forecasts in the Southwest, in an attempt to close the notoriously open circle of research-to-operations.

Refreshments: 3:15 PM

Type of event:
Seminar/Symposium
Building:
FL2
Room:
1022

Posted by Bobbie Weaver (weaver@ucar.edu) at x8946
Hosting lab/division or program:
CGD, MMM, HAP
Will this event be webcast?
Thursday, July 12, 2018 - 3:30pm

Rescheduled Date from June 14, 2018
Speaker: Michael Ek
Affiliation: NCAR/RAL/JNT

Local land-atmosphere coupling involves the interactions between the land-surface and the atmospheric boundary layer (ABL), and in turn with the free atmosphere above.  Initiation of fair-weather cumulus requires an increase in relative humidity at the ABL top, and depends on a number of processes, some opposing each other.  Those processes include the evolution of surface fluxes, sub-surface heat and moisture transport, surface-layer turbulence, boundary-layer development, and warm- and dry-air entrainment into the ABL from the free atmosphere above.  Following an analytical development, we use modeling and observational data sets to examine this question.

Refreshments: 3:15 PM

Type of event:
Seminar/Symposium
Building:
FL2
Room:
1022

Posted by Bobbie Weaver (weaver@ucar.edu) at x8946
Hosting lab/division or program:
MMM, JNT
Will this event be webcast?
Monday, July 9, 2018 - 9:00am

NCL + VAPOR Workshop

July 9-12, 2018
Corporate Technical Training Center
Center Green campus, 3085 Center Green Drive (CG-2)
Boulder, CO

This 4-day workshop is geared towards new users of NCL and VAPOR. It will include a combination of introductory lectures on NCL and scientific data formats and graphics, and 3D visualization using VAPOR. Students will be encouraged to bring their own data to the workshop. There will be hands-on labs every afternoon, where the instructors will work individually with students to help them analyze their own data using NCL and VAPOR.

Registration is limited and the summer workshop tends to fill up quickly, so register as soon as possible. The deadline is June 15, 2018.

Travel support is available on a first-come, first-served basis for qualified students from EPSCoR states or minority-serving institutions to attend. The deadline for applying for funds is May 14, 2018.

See the link below for full details and a link to the registration form.

http://www.ncl.ucar.edu/Training/Workshops/

Type of event:
Seminar/Symposium
Building:
CG2
Room:
Corporate Technical Training Center

Posted by Elizabeth Faircloth (fair@ucar.edu) at x1253
Will this event be webcast?
No
Tuesday, August 14, 2018 - 9:00am

2018 NORTH AMERICAN WORKSHOP ON HAIL & HAILSTORMS
AUGUST 14 - 16, 2018, BOULDER, COLORADO
NCAR CENTER GREEN CAMPUS

Across North America, hailstorms are responsible for over $10 billion dollars in annual property damage. The increase in the impact of hailstorms has outpaced advances in detection, forecasting, and mitigation. The National Science Foundation, the National Center for Atmospheric Research and the Insurance Institute for Business & Home Safety are organizing the first North American Workshop on hail, and hailstorms. The workshop will bring together public and private stakeholders to discuss the current state of the science regarding all facets of this peril and provide a look to the future. The workshop will be held at the NCAR Center Green 1 (CG1) campus, 3080 Center Green Drive, Boulder, Colorado.

Call For Abstracts: The deadline for abstract submissions is May 1, 2018.

For information: https://www.mmm.ucar.edu/north-american-hail-workshop 

Type of event:
Workshop
Building:
CG1
Room:
Auditorium

Posted by Kris Marwitz (KMARWITZ@UCAR.EDU) at x8198
Hosting lab/division or program:
MMM
Will this event be webcast?
No
Wednesday, August 15, 2018 - 9:00am

2018 NORTH AMERICAN WORKSHOP ON HAIL & HAILSTORMS
AUGUST 14 - 16, 2018, BOULDER, COLORADO
NCAR CENTER GREEN CAMPUS

Across North America, hailstorms are responsible for over $10 billion dollars in annual property damage. The increase in the impact of hailstorms has outpaced advances in detection, forecasting, and mitigation. The National Science Foundation, the National Center for Atmospheric Research and the Insurance Institute for Business & Home Safety are organizing the first North American Workshop on hail, and hailstorms. The workshop will bring together public and private stakeholders to discuss the current state of the science regarding all facets of this peril and provide a look to the future. The workshop will be held at the NCAR Center Green 1 (CG1) campus, 3080 Center Green Drive, Boulder, Colorado.

Call For Abstracts: The deadline for abstract submissions is May 1, 2018.

For information: https://www.mmm.ucar.edu/north-american-hail-workshop 

Type of event:
Workshop
Building:
CG1
Room:
Auditorium

Posted by Kris Marwitz (KMARWITZ@UCAR.EDU) at x8198
Hosting lab/division or program:
MMM
Will this event be webcast?
No
Thursday, August 16, 2018 - 9:00am

2018 NORTH AMERICAN WORKSHOP ON HAIL & HAILSTORMS
AUGUST 14 - 16, 2018, BOULDER, COLORADO
NCAR CENTER GREEN CAMPUS

Across North America, hailstorms are responsible for over $10 billion dollars in annual property damage. The increase in the impact of hailstorms has outpaced advances in detection, forecasting, and mitigation. The National Science Foundation, the National Center for Atmospheric Research and the Insurance Institute for Business & Home Safety are organizing the first North American Workshop on hail, and hailstorms. The workshop will bring together public and private stakeholders to discuss the current state of the science regarding all facets of this peril and provide a look to the future. The workshop will be held at the NCAR Center Green 1 (CG1) campus, 3080 Center Green Drive, Boulder, Colorado.

Call For Abstracts: The deadline for abstract submissions is May 1, 2018.

For information: https://www.mmm.ucar.edu/north-american-hail-workshop 

Type of event:
Workshop
Building:
CG1
Room:
Auditorium

Posted by Kris Marwitz (KMARWITZ@UCAR.EDU) at x8198
Hosting lab/division or program:
MMM
Will this event be webcast?
No
Monday, June 25, 2018 - 12:00pm

The Impact of Sea Surface Temperature Biases and Errors on Tropical Cyclone Simulations and Predictions

Wei-Ching Hsu
Texas A&M University

Abstract:
Tropical cyclones (TCs) are one of the most impactful natural hazards to people’s life and economy, and improving forecast and future projection of TCs is one of the most important areas for the weather and climate research community.  Previous studies show that sea surface temperature (SST) patterns both local to and remote from TC development regions are important drivers of the variability of TC activity on different timescales.  Thus, reliable simulations and predictions of TC activity depend on a realistic representation of tropical SSTs.  Nevertheless, severe SST biases are common to the current generation of global climate models, especially in the tropical Pacific and Atlantic, where TCs are active. Alleviating these SST biases has been proven challenging, leading to the prospect that the bias problem may persist for decades, even with improvements in our understanding of the causes of the biases and in reducing the biases in the newer version of climate models.  It is, therefore, crucial to understand and evaluate the effects of the biases on simulations of climate extremes.  Using an atmospheric-only tropical-channel model, we investigated the impact of SST biases and uncertainties in SST prediction on TC simulations.  The simulation results show significant influences from SST biases on TC simulations both in local basins and remote ocean basins.  Moreover, we explored the prospect of multiyear-to-decadal TC prediction by evaluating the skill of CESM Decadal Prediction Large Ensemble (CESM-DP-LE) in predicting TC-related environmental condition changes on multiyear-to-decadal time scales.  The results show that CESM-DP-LE is highly skillful in predicting TC genesis potential index (GPI) on multiyear to decadal timescales.  In particular, it successfully predicted the decadal shift in mid 1990s when the Atlantic TC activities increased abruptly.  This result paves the way for further study of decadal TC forecast.

Monday, 25 June 2018
12:00 pm – 1:00 pm
Mesa Lab, 1850 Table Mesa Drive, Boulder, CO
ML-245 – Chapman Room
Seminar will not be webcast

For more information, please contact Teresa Foster, teresaf@ucar.edu, 303-497-1741

Type of event:
Seminar/Symposium
Building:
Mesa Lab
Room:
ML-245 Chapman Room

Posted by Teresa Foster (teresaf@ucar.edu) at x1741
Hosting lab/division or program:
CGD
Will this event be webcast?
No
Friday, July 6, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Friday, July 20, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Friday, August 3, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Friday, August 17, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Friday, August 31, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Friday, September 14, 2018 - 6:00pm

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!

Mark your calendars for future dates:   July 6 & 20, August 3, 17 & 31, September 14 & 28, October 12 & 26, November 2, 16 & 30, December 14.

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 (lcarr@ucar.edu) at x8702
Will this event be webcast?
No
Monday, June 25, 2018 - 8:30am

The Unidata Users Committee invites you to join Unidata staff, community members, and distinguished speakers this June in Boulder, Colorado. The goal of this year's workshop is to raise awareness of the current trends in the academic geoscience community with an emphasis on Data Proximate Analysis, Machine Learning and Data Analytics, Using GOES-16 Data, and Working with Ensemble NWP Output. Scientists and educators from the academic geoscience community will present ideas and techniques for making effective use of geoscience data and share activities, course materials, and ideas for improving education and research. There will be hands-on workshops, a poster session, and time for informal discussions with presenters and Unidata developers.

The workshop, titled Reducing Time to Science: Evolving Workflows for Geoscience Research and Education, is scheduled for June 25-28, 2018.

The workshop will feature oral presentations, hands-on demonstrations of Unidata and related technologies, collaborative work sessions, and a poster session for those who wish to share their work with workshop participants.

Additional details on speakers and session topics for the workshop are available on the 2018 Users Workshop page.

Registration for locals or others who do not require travel or lodging assistance from Unidata is open through June 10, 2018. See the Registration page for details. 

Type of event:
Workshop
Building:
CG1
Room:
CG1-Auditorium

Posted by Douglas Dirks (ddirks@ucar.edu) at x8657
Hosting lab/division or program:
Unidata
Will this event be webcast?
No
Tuesday, June 26, 2018 - 10:00am

** Special MMM Seminar **

Simulation of ice particle shape effects using NTU multi-moment microphysics scheme

 Jen-Ping Chen
National Taiwan University 

Ice crystal shape effect (ICSE) on cloud microphysical processes remains an unresolved issue in cloud modeling. This study incorporated a newly developed three-moment modal parameterization with shape representation for pristine ice crystal and snow aggregates into the WRF model to investigate ICSE. This NTU-v2 scheme allows gradual adaptation of ice crystal habits under varying environmental conditions and thus keeps previous memory of shape. Furthermore, density variations are considered for pristine cloud ice, snow aggregate, and rimed ice (graupel). Shape and density variations are taken into account in calculating the particle fall speed and radar reflectivity. This talk presents a C3VP case to demonstrate the sensitivity of ICSE, as well as a mid-latitude cold front case during the DIAMET campaign for further comparison with aircraft observations. Both cases showed strong influence of ICSE on cloud structure and precipitation. In addition, the effect of particle shape on radar reflectivity calculation is also demonstrated.

 *Please note special day and time
Refreshments 9:45 AM

Type of event:
Seminar/Symposium
Building:
FL2
Room:
Main Auditorium, Room 1022

Posted by Nancy Kerner (nskerner@ucar.edu) at x8946
Hosting lab/division or program:
MMM
Will this event be webcast?