2023 AGU Fall Meeting

The American Geophysical Union (AGU) Fall Meeting is the primary gathering for Earth and space scientists, students, and those in affiliated fields to share scientific findings and identify innovative solutions. Several AOS-related presentations will be given at this year's meeting.

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A Prototype Multi-view Stereo Method for Determining Cloud Structure with Multi-angle Imagery

Author(s): Sean Foley, Kirk D Knobelspiesse, Andrew M Sayer and Chamara Rajapakshe
Date: 14-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Stereo-based 3D reconstruction techniques have long been used in the remote sensing and computer vision communities. Both fields have progressed divergently, leading to a rift in applications, terminology, and techniques. In remote sensing, the estimation of 3D cloud structure is typically referred to as a height retrieval problem.

An Analytic Collaborative Framework for the Earth System Observatory

Author(s): Arlindo da SIlva, Benjamin Poulter, Alexey N Shiklomanov, Patricia Castellanos, David R Thompson, Derek J Posselt, Weile Wang, and Bryce Currey
Date: 15-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)NASA's Earth System Observatory groundbreaking observations will provide critical measurements to address societal relevant problems in climate change, natural hazard mitigation, fighting forest fires, and improving real-time agricultural processes.

An Overview of the AOS Storm Mission and Potential Synergy with Geostationary Observations

Author(s): John E Yorks, Edward P Nowottnick, Meloe S Kacenelenbogen, Robert C Levy, Kerry Meyer, Arlindo daSilva and Scott A Braun
Date: 11-Dec-2023
Location: 3002 - West (Level 3, West, Moscone Center)Aerosols, especially smoke and dust, have strong diurnal emission characteristics that influence long-range transport, weather, climate, and air quality. While the new generation of spaceborne multispectral radiometer and spectrometer sensors in geostationary (GEO) orbit provide critical diurnally resolved column aerosol properties, these sensors are limited in providing aerosol vertical distributions and planetary boundary layer (PBL) height information.

Beyond number concentration: Application of adiabatic cloud models to infer complete vertical profiles of warm cloud microphysical properties

Author(s): Matthew D Lebsock, Rick Schulte and John M Haynes
Date: 15-Dec-2023
Location: 3002 - West (Level 3, West, Moscone Center)The CloudSat mission has made significant advancements in deriving the vertical profile of cloud properties by utilizing radar, lidar, and visible imagery in a synergistic manner. Accurate calculation of radiative fluxes and atmospheric heating rates requires a comprehensive understanding of the vertical profile of cloud properties. However, a notable limitation has been the inability of the CloudSat radar to detect low-altitude liquid clouds, while the CALIOP lidar is strongly affected by liquid water, leading to an incomplete description of the vertical profile for many liquid clouds.

Evaluating spectral cloud effective radius retrievals against multi-angle polarimetry and in situ cloud probes

Author(s): Kerry Meyer, Steven E Platnick, Nandana Amarasinghe, George Thomas Arnold and Daniel J Miller
Date: 14-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Cloud droplet effective radius (CER), defined as the ratio of the 3rd moment of the droplet size distribution (DSD) to the 2nd moment, is a radiative quantity widely used for studies of aerosol/cloud interactions and their impacts on Earth's radiation budget and hydrological cycle. CER commonly is retrieved simultaneously with cloud optical thickness from passive imagers using a bi-spectral technique pairing a non-absorbing visible/near-infrared spectral channel with an absorbing shortwave/mid-wave infrared spectral channel.

Evaluation of ICESat-2 Atmospheric Products Using the CALIOP and CATS Spaced-Based Lidars

Author(s): Kenneth Edward Christian, Stephen P Palm, Edward P Nowottnick and John E Yorks
Date: 13-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)The Ice, Cloud, and land Elevation Satellite (ICESat-2) was launched in September 2018 and carries one instrument called the Advanced Topographic Lidar Altimeter System (ATLAS) that utilizes a high repetition rate (10 KHz), low per pulse energy (100 µJ) laser and photon counting detectors.

Future Satellite Observations of the Dynamics and Microphysics of Convection from the NASA Atmosphere Observing System (AOS)

Author(s): Scott A Braun, Matthew McLinden, Pavlos Kollias, Hélène Brogniez, Takuji Kubota, John E Yorks, Tyler Thorsen
Date: 11-Dec-2023
Location: 3001 - West (Level 3, West, Moscone Center)Atmospheric convection plays a fundamental role in the vertical redistribution of atmospheric constituents, in driving atmospheric circulation, and in creating severe weather conditions that put life and property at risk. Cloud and precipitation processes in convection and their related release of latent heat are coupled to the rate of vertical air motion in convective updrafts and downdrafts.

Global and Regional Near-Surface Aerosol Particulate Matter (e.g., PM2.5) using Measurements, Retrievals, and/or Model Simulations I Poster

Author(s): Travis D Toth, Meloe S Kacenelenbogen, Olga V. Kalashnikova and Bryan N Duncan
Date: 13-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Fine Particulate Matter less than 2.5 micrometers in diameter, also known as PM2.5, is a significant potential danger to human health and an environmental issue of worldwide increasing concern.

Harnessing AOS Observations for Advanced Understanding of Cloud Radiative Fluxes

Author(s): Steffen Mauceri, Howard Barker, David S Henderson, Sebastian Schmidt, Hong Chen, Anthony B Davis, Najda Villefranque and Graeme L Stephens
Date: 14-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Understanding the complexities of cloud-sky radiative fluxes is crucial for improving numerical predictions of climate change. NASA's upcoming Atmosphere Observing System (AOS) mission promises unprecedented observations that will present an opportunity to enhance our understanding of the role of clouds in modulating both Earth’s radiation budget and climate sensitivity.

How remote sensing can facilitate desert dust research

Author(s): Vassilis Amiridis
Date: 14-Dec-2023
Location: 3005 - West (Level 3, West, Moscone Center)Atmospheric remote sensing from space and surface has been advanced during the last decade. Mineral dust is an atmospheric target that provides a strong signature on active and passive polarimetric remote sensing observations, due to its irregular shape.

Implementation of the Airborne Phased Array Radar (APAR) Observing Simulator (AOS?

Author(s): Wen-Chau Lee, Brad Klotz and Jothiram Vivekanandan
Date: 12-Dec-2023
Location: 3010 - West (Level 3, West, Moscone Center)Development of new observing systems is critical for the advancement of scientific understanding of weather phenomena. One of the issues with developing new instrumentation is the unknown performance characteristics of the instrument, the subsequent unknowns in uncertainty in measurements, and the tools for quality control, visualization, and data analysis.

Mapping Aerosol Lidar Ratios over Ocean using Constrained Retrievals and a Global Aerosol Model

Author(s): Travis D Toth, Gregory L Schuster, Sharon D Rodier, Marian Clayton, Mian Chin, David Painemal, Zhujun Li, Richard Anthony Ferrare and Ellsworth Judd Welton
Date: 12-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)The current NASA Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) algorithms assign one lidar ratio (i.e., extinction-to-backscatter ratio; LR) value globally for each of the seven tropospheric aerosol types. In a future data products release, the CALIPSO project aims to improve these algorithms through the development of regional and seasonal LR climatologies.

NASA GEO Imager Research Algorithm Dataset for Cloud Optical Properties

Author(s): Robert Holz, Kerry Meyer, Steven E Platnick, Steve Dutcher, G. Wind, Nandana Amarasinghe and Andrew Heidinger
Date: 15-Dec-2023
Location: 3002 - West (Level 3, West, Moscone Center)The advanced capabilities of the new generation of operational weather satellite imagers in low-Earth orbit (LEO; e.g., VIIRS) and geostationary (GEO; e.g., ABI, AHI, etc.), having spectral and spatial capabilities analogous to the NASA Earth Observing System (EOS) MODIS, offer the opportunity to extend the high impact EOS MODIS dataset for clouds into the next decade and into the time domain.

NASA's Earth System Observatory: Atmosphere Observing System

Author(s): Scott A Braun, Barry L Lefer, Hal Maring, Jason Hair and Andrea Monet Portier
Date: 14-Dec-2023
Location: 2003 - West (Level 2, West, Moscone Center)The 2017 "Decadal Survey for Earth Science and Applications from Space" recommended that NASA implement five high priority Designated Observables, including Aerosols (A) and Clouds, Convection and Precipitation (CCP).

Open-Source Science-led Development of the Atmosphere Observing System (AOS) Mission Science Data System (SDS)

Author(s): David Matthew Giles, Robert Edward Wolfe, Curt Tilmes, Sadashiva Devadiga, Navid Golpayegani, Karin Blank and David J Meyer
Date: 11-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)The Earth System Observatory (ESO) Atmosphere Observing System (AOS) mission will provide space-based and suborbital observations of collocated cloud, dynamic, precipitation and aerosol processing leading to improved weather, air quality, and climate predictions.

Space-Based Precipitation Observations: Innovations for Science and Applications I Poster

Author(s): David Matthew Giles, Robert Edward Wolfe, Curt Tilmes, Sadashiva Devadiga, Navid Golpayegani, Karin Blank and David J Meyer
Date: 12-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Precipitation processes drive the Earth's water cycle, weather, and climate, and are key to habitability around the world. Global precipitation observations have been vital for investigating processes that impact extreme weather, hydrologic forecasts, and infrastructure, with the TRMM and GPM missions setting standards for global precipitation science and applications.

The Earth in Living Color: NASA's Surface Biology and Geology Designated Observable

Author(s): Benjamin Poulter, Robert O Green, David Schimel, Simon J Hook, Michelle M Gierach and Kerry Cawse-Nicholson
Date: 11-Dec-2023
Location: 2005 - West (Level 2, West, Moscone Center)The 2017 NASA Earth Science Decadal Survey recommended studies of Earth-system observables, including oceanic, terrestrial, cryospheric and atmospheric processes.

The Impact of a Spherical Atmosphere on Polarimetric Aerosol Inversion

Author(s): Feng Xu, Lan Gao, Jens Redemann, Reed Espinosa, Kirk D Knobelspiesse and Sabrina Thompson
Date: 15-Dec-2023
Location: Poster Hall A-C - South (Exhibition Level, South, Moscone Center)Low sun illumination is associated with a small fraction (~15%) of our daytime. However, significant aerosol events have been observed in the early morning and early evening. For example, the diurnal PM coarse mode aerosols arrive at a peak during the rush hours of morning (7-9am) and evening (5-7pm) in some high population living areas (Mora et al., 2017).