Presentadora: Rosimar Rios-Berrios

Tema: Huracanes

Regístrese para este evento GRATIS.

Sobre la serie: El equipo detrás de la serie de webinars Ciencia-en-casa de CIRES/ se entusiasma de anunciar una serie de webinars (seminarios virtuales) mensuales en español. Estas series pretenden poner en contacto a clases y estudiantes de medio grado e instituto que se encuentran actualmente estudiando a distancia con científicos/as.

Cada webinar (seminario virtual) cuenta con una presentación de unos 10 o 15 minutos, a cargo de científicos/as, donde nos cuentan cómo se metieron en el mundo de la ciencia, qué hacen en su labor de científicos/as y qué están investigando actualmente. Cada presentación va seguida de unos 10 o 15 minutos para preguntas y respuestas en directo.

Presenter: Rosimar Rios-Berrios
Topic: Hurricanes

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About the series: CIRES/NOAA Serie La Ciencia-en-Casa is a series of monthly webinars in Spanish. These webinars are intended to connect classes and high school and high school students who are currently studying virtually with scientists. Each webinar has a presentation of about 10 or 15 minutes by scientists, where they tell us how they got into the world of science, what they do as scientists and what they are researching actually. Each presentation is followed by about 10-15 minutes for live questions and answers.

Presenter: Andy Hoell
Topic: Flash Drought

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About the series: The CIRES/NOAA Science-at-Home Virtual Speaker Series runs at 1pm Tuesdays and is designed to show young students at home the work being done at CIRES and NOAA, and offer recommendations to activities that can be done at home to reinforce learning

ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.

Chemistry of Organic Compounds in the Atmosphere and Indoor Air

Paul Ziemann,
ANYL Faculty, CU Boulder (1/2 seminar)

"Laboratory studies provide much of the fundamental data on reaction kinetics, products, and mechanisms that are needed to understand atmospheric and indoor air chemistry and to develop models that are used to establish air quality regulations and predict the effects of human activities. Research in my laboratory focuses primarily on environmental chamber studies of the atmospheric chemistry of organic compounds emitted from natural and anthropogenic sources and the physical and chemical processes by which oxidized organic reaction products form aerosol particles. In addition to this we have conducted a number of collaborative studies of indoor air chemistry at CU."

Seminar begins at 12:40. Please contact Anne.Handschy@colorado.edu for the remote link.

Presenter: Rosimar Rios-Berrios
Topic: Hurricanes and Forecasting

Join the live stream.

About the series: The CIRES/NOAA Science-at-Home Virtual Speaker Series runs at 1pm Tuesdays and is designed to show young students at home the work being done at CIRES and NOAA, and offer recommendations to activities that can be done at home to reinforce learning. 

Register for this FREE event.

From September 2019 to October 2020, the German icebreaker Polarstern was embedded within the Arctic sea ice and drifted for 12 months. Hundreds of scientists from around the world spent months aboard, in shifts, studying the complete Arctic climate “system” including the ocean below, sea ice, and the atmosphere above. 

Polar bears disrupted their work, wandering through small scientific “cities” on the ice and forcing people to scramble back to the ship. An arctic fox chewed through cables. And storms swirled through, breaking up the sea ice underfoot (and under instruments). 

CU Boulder scientists played leading roles in the mission, dubbed MOSAiC for Multidisciplinary Drifting Observatory for the Study of Arctic Climate. Today, as part of Research & Innovation Week, you’ll hear from expedition co-coordinator and lead atmospheric scientist Matthew Shupe; two educators who worked with dozens of MOSAiC scientists to bring their insights to students; and a videography team who captured mission moments in 360° degrees, creating planetarium shows that will be viewed around the world. 

Panelists will take live questions from the audience. There will be plenty of time for engagement.

This Zoom event was recorded, and can be watched here. 

Links provided in the chat: 

For more information about CU Boulder involvement in this epic Arctic research expedition, please explore this website. There, you can sign up for weekly education updates; read news from the expedition; explore 360-degree experiences; take a video course; and much more. 
 

Presenter: Aleya Kaushik
Topic: The Changing Arctic Carbon Cycle

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About the series: The CIRES/NOAA Science-at-Home Virtual Speaker Series runs at 1pm Tuesdays and is designed to show young students at home the work being done at CIRES and NOAA, and offer recommendations to activities that can be done at home to reinforce learning

ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.

Variability and diel dependence of O 3 – NO x – VOC chemistry in western wildfire plumes: Results from the NOAA Twin Otter during FIREX-AQ

Michael Robinson, ANYL 1st year

"The variability in photochemical ozone production from western wildfire plumes is important to the accurate prediction of their influence on North American air quality. A set of photochemical measurements including ozone, nitrogen oxides, photolysis rates and a suite of volatile organic compounds (VOCs), were made from the NOAA Twin Otter research aircraft as a part of the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) experiment. This research aircraft sampled nine unique fire complexes in five western states. Typical research flight days included flights during the afternoon, evening and night. In general, observed ozone production in the sampled plumes is rapid, reaching maximum ozone within 30 minutes downwind. A 0-D box modeling tool was developed to further probe the chemistry driving ozone production in these plumes. This tool was used to calculate afternoon and evening ozone isopleths which allows for a comparison of each individual fire complex in a common framework. The analysis shows the sensitivity of ozone production to initial NOx and VOC emissions. However ozone isopleths are not capable of describing the temporal transition of NO x and VOC sensitive chemical regimes. A radical budget approach is used for probing the temporal evolution of the chemistry. Afternoon photochemical plumes display a rapid transition from VOC sensitive chemistry to NO x sensitive chemistry, mainly driven by radical production from photolysis of HCHO and HONO emitted directly from the fire. Evening photochemical plumes exhibit a slower transition from NO x sensitive chemistry to VOC sensitive chemistry, with a larger portion radical production from alkene ozonolysis."
Michael A. Robinson, Zachary C.J. Decker, Kelley C. Barasanti, Matthew M. Coggon, Frank M. Flocke, Carley D. Fredrickson, Georgios I. Gkatzelis, Christopher D. Holmes, Denise D. Montzka, Brett B. Palm, R. Bradley Pierce, Rebecca H. Schwantes, Geoffrey S. Tyndall, Joel A. Thornton, Paul Van Rooy, Andrew J. Weinheimer, and Steven S. Brown.

and

Model Inter-comparisons of Inorganic Nitrate Formation During KORUS-AQ Campaign

Seonsik Yun, ANYL 1st year

"Nitrogen oxides play an important role in global tropospheric chemistry. The lifetime of nitrogen oxides is controlled by organic and inorganic nitrate formation. GEOS-Chem, a global 3-D chemical transport model, has historically had an over-estimation problem of inorganic nitrates relative to surface observation networks. This study investigated this problem by using model inter-comparisons with six different chemical transport model simulations during the KORUS-AQ field campaign period. N2O5 hydrolysis reaction, a primary nocturnal inorganic nitrate formation, was investigated to compare differences in calculations of inorganic nitrate formation between the model simulations. Differences in heterogeneous loss of N2O5 between the models were analyzed with the uptake coefficient, aerosol surface area density, and N2O5 concentration. Results show that high N2O5 concentrations at nighttime in GEOS-Chem could be attributed to the high O3 concentrations at nighttime compared to the Ensemble model, which can contribute to the over-estimation of inorganic nitrates in GEOS-Chem."

Please note: seminar starts at 12:40 PM. Contact anne.handschy@colorado.edu for Zoom link.

ESOC virtual coffee hour occurs weekly from 9-10am on Wednesdays. We will be meeting remotely on Zoom. Please email Claire Waugh (waughc@colorado.edu) for information.

ESOC researchers, post-docs and graduate students gather for conversation and to discuss research. Occasional guest speakers are invited to give short presentations on topics of interest.