Department Seminars
Environmental and Climate Sciences Department (ECSD) seminars are typically scheduled on Thursdays at 11 a.m. in the Large Conference Room in Bldg. 490. Special times, dates, and locations are indicated on the schedule.
These seminars are all open to the public. Seminar attendees who do not have a BNL ID badge should arrive up to 30 minutes prior to the start of the seminar and check-in at the Main Gate. A government-issued photo ID is required at check in. Inform the gate attendee that you are here for the Environmental and Climate Sciences Department seminar (ECSD seminar).
For other details, or to schedule a seminar, contact the Seminar Committee.
Upcoming Seminars
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MAY
23
Thursday
Environmental & Climate Sciences Department Seminar
"Radar Observations and Simulations of the Level of Maximum Detrainment"
Presented by Gretchen Mullendore, Univ. North Dakota
11 am, Large Conference Room, Bldg. 490
Thursday, May 23, 2019, 11:00 am
Hosted by: Mike Jensen
Parcel theory is the basis for many of convective indices (e.g., CAPE, LNB) that are used extensively throughout the community. While it is widely known that parcel theory is only an approximation, and therefore the indices that derive from parcel theory are also just approximations, much more research is needed so that we can better link our theory to observations. One example is the relationship between the level of neutral buoyancy (LNB) and the level of maximum detrainment (LMD). Both models and observations show departures from LNB depend on storm morphology, season and geographical region.
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MAY
30
Thursday
Environmental & Climate Sciences Department Seminar
"The Influence of Aerosol Chemical Composition, Morphology, and Phase State on Water and Ice Cloud Particle Formation"
Presented by Yue Zhang, North Carolina State, MIT, and Aerodyne
11 am, Large Conference Room, Bldg. 490
Thursday, May 30, 2019, 11:00 am
Hosted by: Ernie Lewis
Aerosols and clouds effect Earth's radiative balance, and aerosol-cloud interactions are major sources of uncertainties in predicting future climate. The climate effects of water and ice cloud particles formed from atmospheric particulate matter are not well understood due to the complex physical and chemical properties of these aerosols. Measurements from fixed sites and field campaigns have shown that organic aerosols (OA) dominate the non-refractory aerosols in the free troposphere where clouds typically form, and cloud water and ice cloud residue both show the presence of organic materials. Despite the abundance of OA, their effects on both cloud condensation nuclei (CCN) and ice nucleation (IN) are not fully understood and even controversial. To probe into these issues, the CCN and IN properties of complex inorganic-organic aerosol mixtures that simulate ambient conditions were measured with a cloud condensation nuclei counter (CCNC, DMT, Inc.) and a spectrometer for ice nucleation (SPIN, DMT, Inc.) at a variety of laboratory conditions. Our studies suggest that the composition of the organic-containing aerosols, as well as their morphology and phase state, jointly impact their cloud forming potential. The results highlight the importance of combining aerosol physical and chemical properties to accurately understand cloud particle formation processes and their implications on the climate.
Once your seminar date is set, register through the Guest Information System, which will require you to upload a current copy of your CV when registering.
The registration should be completed a minimum of 30 days prior to your seminar date. (If travel is required, then complete the registration 60 days prior to your seminar date.)
To assist you in completing the registration form, below are answers to some of the questions:
| Purpose of Visit: | Speech/Presentation |
| Subject Code: | Environmental Sciences, Atmospheric |
| Access Requested: | Physical on-site Access to BNL |
| Estimated Days: | intermittently <30 days |
| Visit Justification: | Invited Seminar Speaker for the Environmental & Climate Sciences Department Seminar Series. Title of my talk: (insert title) or Topic of my talk: (insert topic) |
| BNL Department: | Environ & Climate Sci. Dept (EE) |
| Research Facility: | None |
| Facility Type: | Non-Security Area |
| Beamline: | None or Unknown |
| Research Type: | Open research |
| Anticipated Start Date: | date you expect to come onsite |
| Anticipated End Date: | date of your last date onsite |
After receiving approval for your visit, Sharon Zuhoski will contact you regarding your travel/lodging arrangements.
