Upcoming Seminars and Presentations

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, as described elsewhere on this page, presentations on the GISS premises are not open to the general public.

Events marked "Virtual Only" are presented on-line for remote attendance only. Please consult with the event contact/host for connection details.

This event listing was last updated 2020-08-13. All times shown are New York City local.


Tuesday, August 11, 2020
11:00 a.m. to 12:15 p.m. — Virtual Only
Sea Level Rise Seminar
Topic: A story of firn and ice: Measuring firn densification with phase-sensitive radar
Speaker: Elizabeth Case (LDEO)
More info: Abstract
Host: Craig Rye

Sea Level Rise Seminar
Speaker: Elizabeth Case (LDEO)
Title: A story of firn and ice: Measuring firn densification with phase-sensitive radar


This is an on-line, virtual presentation only. Please consult with event host Craig Rye for connection details.


Abstract:
Firn densification models inform altimetry-derived mass balance estimates on ice sheets, which inform sea-level-rise contributions from ice sheets. However, predictions made by current densification models indicate key uncertainties. For example, they disagree on the dependence of density and densification on accumulation rates. Observations of densification required to test these models are rare, partly because in situ methods for measuring englacial strain are time consuming and expensive. Moreover, shallow measurements may confound strain due to densification with strain due to ice-sheet flow. Here we show phase-sensitive radio-echo sounder (pRES) systems, typically deployed to measure sub-shelf melting or ice-sheet flow, can be used to measure densification and test firn models. We present two complementary methods for extracting density and densification information from pRES data and a third method for comparing model and radar measurements. Each method makes different assumptions about the density structure and state, and the availability of independent measurements. pRES-measured profiles from ice rises in the Weddell Sea Sector, West Antarctica, are consistent with measured density and a physics-based densification model. Due to their minimal logistic requirements, new pRES systems like autonomous pRES, could be inexpensively deployed to monitor firn densification. Existing phase-sensitive radar data may contain densification information even in cases when surveys primarily targeted other processes.


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Thursday, August 13, 2020
11:00 a.m. to 12:00 noon — Virtual Only
CCRI Summer Intern Presentations 1
Host: Rosalba Giarratano
Thursday, August 13, 2020
1:00 p.m. to 2:45 p.m. — Virtual Only
CCRI Summer Intern Presentations 2
Host: Rosalba Giarratano
Friday, August 14, 2020
3:30 p.m. to 5:30 p.m. — Virtual Only
CCRI Summer Intern Round Table
Host: Rosalba Giarratano
Tuesday, August 18, 2020
11:00 a.m. to 12:15 p.m. — Virtual Only
Sea Level Rise Seminar
Topic: Extreme Rainfall Events of Bangladesh: How are they changing over time and are they predictable?
Speaker: Nachiketa Acharya (Columbia/LDEO)
More info: Abstract
Host: Craig Rye

Sea Level Rise Seminar
Speaker: Nachiketa Acharya (Columbia/LDEO)
Title: Extreme Rainfall Events of Bangladesh: How are they changing over time and are they predictable?


This is an on-line, virtual presentation only. Please consult with event host Craig Rye for connection details.


Abstract:
Bangladesh, a low-lying delta nation of 160 million people with more than 130 rivers, is very vulnerable to sea level rises as the average altitude is less than 10m above sea level. This country experiences nearly yearly disasters of one kind or another — such as tropical cyclones, storm surges, coastal erosion, floods, and droughts -- causing heavy loss of life and endangering development activities. This year, Bangladesh has been especially affected by the pre-monsoon Cyclone Amphan and excessive monsoon rain which triggered severe flooding and landslides, affecting millions of people. This situation is exacerbated by the COVID-19 pandemic, as the public health crisis collides with climatic disasters.

This talk will explore the questions: How are extreme/excessive rainfall patterns changing over time? Are these events predictable? In this talk, I will first explain the recent changes, trends, and fluctuations of extreme rainfall indices based on the ETCCDI. The return levels of such extreme events are also estimated using Generalized extreme value distributions (GEV). To address the second question, I will then discuss the recent development of a systematic general objective approach called NextGen (Next Generation), a forecasting system for Bangladesh which was developed as a part of the Columbia World Project, Adapting Agriculture to Climate Today, for Tomorrow (ACToday).


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Tuesday, August 25, 2020
11:00 a.m. to 12:15 p.m. — Virtual Only
Sea Level Rise Seminar
Speaker: Samantha Buzzard (Georgia Tech)
Host: Craig Rye
Monday, August 31, 2020
9:00 a.m. to 11:00 a.m. — Virtual Only
Venus Science Today (Virtual Conference)
More info: Abstract, Web Link
Host: Michael J. Way

Venus Science Today (Virtual Conference)


This is an on-line, virtual presentation only. Please consult with event host Michael J. Way for connection details.


Abstract:
On-line conference to discuss Venus research either submitted or published in the previous 12 months. The conference will take place over 4 days, but only 2 hours per day. This will allow live simultaneous participation from scientists in Europe, the USA and East Asia.


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Tuesday, September 1, 2020
9:00 a.m. to 11:00 a.m. — Virtual Only
Venus Science Today (Virtual Conference)
More info: Abstract, Web Link
Host: Michael J. Way

Venus Science Today (Virtual Conference)


This is an on-line, virtual presentation only. Please consult with event host Michael J. Way for connection details.


Abstract:
On-line conference to discuss Venus research either submitted or published in the previous 12 months. The conference will take place over 4 days, but only 2 hours per day. This will allow live simultaneous participation from scientists in Europe, the USA and East Asia.


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Tuesday, September 1, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Robert Hailberg (NOAA)
Host: Craig Rye
Wednesday, September 2, 2020
9:00 a.m. to 11:00 a.m. — Virtual Only
Venus Science Today (Virtual Conference)
More info: Abstract, Web Link
Host: Michael J. Way

Venus Science Today (Virtual Conference)


This is an on-line, virtual presentation only. Please consult with event host Michael J. Way for connection details.


Abstract:
On-line conference to discuss Venus research either submitted or published in the previous 12 months. The conference will take place over 4 days, but only 2 hours per day. This will allow live simultaneous participation from scientists in Europe, the USA and East Asia.


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Wednesday, September 2, 2020
1:00 p.m. to 2:00 p.m. — Virtual Only
GISS Lunch Seminar
Topic: Stochastic parameterization in kilometer-scale deep convection simulations
Speaker: McKenna W. Stanford (Univ. Utah)
Host: Clara Orbe
Thursday, September 3, 2020
9:00 a.m. to 11:00 a.m. — Virtual Only
Venus Science Today (Virtual Conference)
More info: Abstract, Web Link
Host: Michael J. Way

Venus Science Today (Virtual Conference)


This is an on-line, virtual presentation only. Please consult with event host Michael J. Way for connection details.


Abstract:
On-line conference to discuss Venus research either submitted or published in the previous 12 months. The conference will take place over 4 days, but only 2 hours per day. This will allow live simultaneous participation from scientists in Europe, the USA and East Asia.


[ Close ]

Tuesday, September 15, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: David Holland (NYU)
Host: Craig Rye
Tuesday, September 22, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Shanice Baily and Una Miller (Columbia/LDEO)
Host: Craig Rye
Tuesday, September 29, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Rebecca Jackson (Rutgers)
Host: Craig Rye
Tuesday, October 6, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Michael Oppenheimer (Princeton)
Host: Craig Rye
Monday, October 12, 2020
8:00 a.m. to 1:00 p.m. — Virtual Only
19th AeroCom / 8th Aerosat Workshop
More info: Web Link
Host: Kostas Tsigaridis
Tuesday, October 13, 2020
8:00 a.m. to 1:00 p.m. — Virtual Only
19th AeroCom / 8th Aerosat Workshop
More info: Web Link
Host: Kostas Tsigaridis
Tuesday, October 13, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Alex Robel (Georgia Tech)
Host: Craig Rye
Wednesday, October 14, 2020
8:00 a.m. to 1:00 p.m. — Virtual Only
19th AeroCom / 8th Aerosat Workshop
More info: Web Link
Host: Kostas Tsigaridis
Thursday, October 15, 2020
8:00 a.m. to 1:00 p.m. — Virtual Only
19th AeroCom / 8th Aerosat Workshop
More info: Web Link
Host: Kostas Tsigaridis
Friday, October 16, 2020
8:00 a.m. to 1:00 p.m. — Virtual Only
19th AeroCom / 8th Aerosat Workshop
More info: Web Link
Host: Kostas Tsigaridis
Tuesday, October 20, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Jing Xiao (Rutgers)
Host: Craig Rye
Tuesday, October 27, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Robin Bell (Columbia/LDEO)
Host: Craig Rye
Tuesday, November 3, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Laure Zanna (NYU)
Host: Craig Rye
Tuesday, November 10, 2020
11:00 a.m. to 12:15 p.m.
Sea Level Rise Seminar
Speaker: Alan Blumberg (Jupiter)
Host: Craig Rye
Tuesday, December 1, 2020
11:00 a.m. to 12:15 p.m. — Virtual Only
Sea Level Rise Seminar
Speaker: Peter Sheng (Univ. Florida)
Host: Craig Rye

Security Note

Federal regulations require that visitors to NASA/GISS arrange in advance for a building pass. Persons attending a 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 spring 2020) 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 October 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.