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CATS Near Real Time Data Products: Applications for Assimilation Into the NASA GEOS-5 AGCM
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Author and Affiliation:
Hlavka, D. L.(Science Systems and Applications, Inc., Greenbelt, MD, United States)
Nowottnick, E. P.(Universities Space Research Association, Greenbelt, MD, United States)
Yorks, J. E.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Da Silva, A.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
McGill, M. J.(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Palm, S. P.(Science Systems and Applications, Inc., Greenbelt, MD, United States)
Selmer, P. A.(Science Systems and Applications, Inc., Greenbelt, MD, United States)
Pauly, R. M.(Science Systems and Applications, Inc., Greenbelt, MD, United States)
Ozog, S.(Maryland Univ., Earth System Science Interdisciplinary Ctr., College Park, MD, United States)
Abstract: From February 2015 through October 2017, the NASA Cloud-Aerosol Transport System (CATS) backscatter lidar operated on the International Space Station (ISS) as a technology demonstration for future Earth Science Missions, providing vertical measurements of cloud and aerosols properties. Owing to its location on the ISS, a cornerstone technology demonstration of CATS was the capability to acquire, process, and disseminate near-real time (NRT) data within 6 hours of observation time. CATS NRT data has several applications, including providing notification of hazardous events for air traffic control and air quality advisories, field campaign flight planning, as well as for constraining cloud and aerosol distributions in via data assimilation in aerosol transport models.   Recent developments in aerosol data assimilation techniques have permitted the assimilation of aerosol optical thickness (AOT), a 2-dimensional column integrated quantity that is reflective of the simulated aerosol loading in aerosol transport models. While this capability has greatly improved simulated AOT forecasts, the vertical position, a key control on aerosol transport, is often not impacted when 2-D AOT is assimilated. Here, we present preliminary efforts to assimilate CATS aerosol observations into the NASA Goddard Earth Observing System version 5 (GEOS-5) atmospheric general circulation model and assimilation system using a 1-D Variational (1-D VAR) ensemble approach, demonstrating the utility of CATS for future Earth Science Missions.
Publication Date: Dec 11, 2017
Document ID:
20170011699
(Acquired Dec 14, 2017)
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number: GSFC-E-DAA-TN50508
Document Type: Oral/Visual Presentation
Meeting Information: American Geophysical Union (AGU) Fall Meeting; 11-15 Dec. 2017; New Orleans, LA; United States
Meeting Sponsor: American Geophysical Union; Washington, DC, United States
Contract/Grant/Task Num: NNG17HP01C; NNG11HP16A; NNX17AE79A
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: AEROSOLS; CLOUD PHYSICS; BACKSCATTERING; OPTICAL RADAR; REAL TIME OPERATION; INTERNATIONAL SPACE STATION; ATMOSPHERIC GENERAL CIRCULATION MODELS; EARTH OBSERVING SYSTEM (EOS); DATA PRODUCTS; OPTICAL THICKNESS; ATMOSPHERIC ATTENUATION; ALGORITHMS; SIMULATION; ERROR ANALYSIS
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