Special Events

Upcoming noteworthy events organized by NASA/GISS staff include:

CFMIP 2019 Meeting on Clouds, Precipitation, Circulation, and Climate Sensitivity

To be held Sep. 30 to Oct. 4, 2019, at the St. John Hotel in Mykonos, Greece.
+ Read More

+ Past Meetings & Workshops

Other Upcoming Events

Following are upcoming seminars, workshops and other events of interest to GISS staff and to our research partners. Please note that due to security regulations, presentations on the GISS premises are not open to the general public.

Tuesday, June 18, 2019
3:15 p.m. to 6:00 p.m.
Lectures in Climate Change - Webinar 10
Contact: Danielle Peters
Wednesday, June 19, 2019
11:00 a.m. to 12:30 p.m.
Special Seminar
Topic: From fires in Africa to cloud transitions in the southeast Atlantic: Biomass burning aerosol effects on the stratocumulus-to-cumulus transition
Speaker: Michael Diamond (University of Washington)
More info: Abstract
Contact: Ann Fridlind

Special Seminar
Speaker: Michael Diamond (University of Washington)
Title: From fires in Africa to cloud transitions in the southeast Atlantic: Biomass burning aerosol effects on the stratocumulus-to-cumulus transition

Abstract: From June to October, fires spread across a large swath of south-central Africa produce large quantities of smoke that is often advected out over the southeast Atlantic Ocean. Once over the ocean, this smoke may change marine cloud properties through both semi-direct and indirect effects. Large eddy simulations (LES) investigating the regional setup have found similar net radiative impacts of the smoke-cloud interactions but from entirely different mechanisms. In particular, the LES simulations disagreed on whether the smoke delayed the transition between overcast stratocumulus to more broken trade cumulus conditions by suppressing drizzle formation or hastened cloud breakup by increasing the entrainment of warm, dry air at cloud top. To explore the source of these model disagreements, we are setting up a case study based on co-located observations from three field campaigns: ORACLES (NASA aircraft), CLARIFY (UK Met Office aircraft), and LASIC (Department of Energy ground site). On August 18th, 2017, all three campaigns collected data near Ascension Island. Our study will follow the three-day Lagrangian evolution of cloud properties leading up to the observations on the 18th using output from regional models including and excluding biomass burning emissions to force multiple LES models from different international groups. Further denial-of-mechanism sensitivity tests will be run with a subset of the LES to determine which physical processes are most responsible for the model spread.

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Wednesday, June 19, 2019
1:00 p.m. to 2:00 p.m.
GISS Lunch Seminar
Topic: Improvements in the uncertainty model in the Goddard Institute for Space Studies Surface Temperature (GISTEMP) analysis
Speaker: Nathan Lenssen (Columbia University)
Contact: Clara Orbe
Tuesday, July 16, 2019
3:15 p.m. to 6:00 p.m.
Lectures in Climate Change - Webinar 11
Contact: Danielle Peters

This event listing was last updated 2019-06-17.

Seminars & Colloquia

Most seminars at GISS are held during the academic year, September through May.

Formal seminar presentations by visiting scientists are held many Fridays at 11:00 a.m.

Informal lunchtime presentations by NASA GISS staff take place on Wednesdays at 1:00 p.m. about twice per month.

Other special seminars occur from time to time as visitors' schedules permit.

Security Note

Regulations require that visitors arrange in advance for a building pass. Persons attending a NASA GISS seminar or colloquium should contact the event host at least two days in advance of the event for assistance. Please include your affiliation in your e-mail.

Due to implementation of the REAL ID Act (2005), a state driver's license or identification card is currently (as of late 2018) required for admittance to the GISS premises, which is considered a federal facility. However, if you have a state-issued license or ID that is not considered REAL-ID compliant, you are urged to obtain one before entrance regulations change, which is expected to occur in 2020.

Persons who are not U.S. citizens or U.S. permanent residents and who may be planning a visit to GISS require that special arrangements be made. Please co-ordinate with your GISS host on this at least three weeks before your visit.

All visitors can expect to have their bags searched upon entry to GISS. This may include having to answer questions about personal items, including any medication the visitor may be carrying.