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.
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+ 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.

Thursday, August 22, 2019
2:00 p.m. to 3:00 p.m.
Special Seminar
Topic: Broadband Radiometry during EarthCARE: An Improved Solar Radiance-to-Flux Conversion
Speaker: Florian Tornow
More info: Abstract
Contact: Susanne Bauer

Special Seminar
Speaker: Florian Tornow
Title: Broadband Radiometry during EarthCARE: An Improved Solar Radiance-to-Flux Conversion

Abstract: Outgoing radiative fluxes at top-of-atmosphere (TOA) are driven by the interaction of clouds, aerosols, and radiation. The upcoming satellite mission EarthCARE aims at an improved understanding of this interaction through a radiative closure assessment based on TOA fluxes. This assessment compares (1) shortwave (SW) and longwave TOA fluxes inferred from an onboard broadband radiometer (BBR) with (2) fluxes from radiative transfer calculations acting on cloud and aerosol properties that were retrieved from onboard active and passive instruments. Comparing instantaneous fluxes over horizontal domains of (~10km)², the radiative closure is considered successful for flux differences smaller 10 W/m². When converting a BBR-measured radiance into a flux, the main challenge is assuming the present hemispheric field of outgoing radiances. Angular Distributions Models (ADMs) – mostly based on several years of satellite observations – provide these radiance fields. This work explores a new approach to SW ADMs and incorporates additional parameters (cloud-top effective radius and cloud-topped water vapor). When comparing against state-of-the-art methodology, new ADMs produce significantly different flux estimates of the order of 10 W/m².

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This event listing was last updated 2019-08-20.

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

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