Presented By: Climate and Space Sciences and Engineering
Alumni of the Year Reception
Featuring Dr. Jhoon Kim
Join us for the seminar featuring Dr. Jhoon Kim, the Alumni of the Year for the U-M Department of Climate and Space Sciences and Engineering. The talk will be followed by a reception. All are welcome to attend!
We are proud to present our Alumni of the Year Award to Professor Jhoon Kim.
Professor Jhoon Kim is a Yonsei Lee Youn Jae Fellow, a Fellow of Korean Academy of Science and Technology, and a professor of atmospheric science at Yonsei University in Seoul, South Korea.
He has worked on the remote sensing algorithm development of aerosol and trace gases to monitor their regional distribution. He is a P.I. of the Geostationary Environment Monitoring Spectrometer (GEMS), the first instrument for air quality monitoring from GEO at unprecedented spatial and temporal resolution. He developed sophisticated aerosol algorithm for GOCI, AHI, AGRI, and AMI, with machine learning and data fusion for better accuracy and coverage based on big data science. He has also worked on CO2 remote sensing using GOSAT and OCO series.
He earned a Ph.D. in Atmospheric and Space Sciences (now U-M Climate and Space) in 1991 at the University of Michigan College of Engineering, after earning an M.S. in Atmospheric Sciences at the University of Michigan College of Engineering in 1987. He earned his B.S. in Atmospheric Sciences at the College of Natural Sciences, Seoul National University, Seoul National University in 1986.
He is a member of the Committee on Earth Observing Satellites (CEOS) AC-VC, through which he has worked to establish coordinated global observation of air quality using GEO constellation. He is also a member of International Radiation Commission (IRC), WMO GURME Science Advisory Group (SAG), and WHO Global Platform for Air Quality and Health. He serves a guest editor for the Atmospheric Measurement Technique and Environmental Research Letter. He is also a member of the Science and Technology Committee and the National Council on Climate and Air Quality (NCCA) of Korea.
Abstract:
Satellite Remote Sensing of Atmospheric Composition from Geostationary Earth Orbit over Asia – My journey from planetary to Earth atmosphere
Featuring Dr. Jhoon Kim, Lee Youn Jae Fellow Professor of Atmospheric Sciences, Yonsei University, Seoul, Korea
Atmospheric composition including aerosols, ozone, air pollutants, and greenhouse gases have been observed extensively from Low Earth Orbit (LEO) providing one to two observations per day. Meteorological satellites have provided aerosol optical properties from both LEO and Geostationary Earth Orbit (GEO) for extended period. Geostationary Ocean Color Imager 2 (GOCI-II) and Advanced Meteorological Imager (AMI) have provided aerosol dataset from the same GK-2 platform. With the recent launch of the Geostationary Environment Monitoring Spectrometer (GEMS) onboard the GK-2B in 2020, we now can observe both aerosols and trace gases at unprecedented spatiotemporal resolution from GEO. GEMS, the first ultraviolet-visible hyperspectral instrument for air quality observation from GEO has provided column amounts of atmospheric pollutants (O3, NO2, SO2, HCHO, CHOCHO, and aerosols) every hour to capture their diurnal variations. Details of the GEMS data products are presented, with validations, and case studies of volcanic eruption, dust, wildfire, urban pollution, and industrial activities. In version 3, there are noticeable improvements in trace gases from updated AMF, fitting window, the separation of stratospheric/tropospheric components etc. Calibration/validation activities are critical to diagnose and improve the overall data quality including the ASIA-AQ, Pandora Asia network (PAN), PEGASOS, GMAP/SIJAQ, ACCLIP, and international CAL/VAL team works. The GEMS retrievals indicate good agreements from the validation campaigns, but still require further improvements in L1 processing as well. Faster sampling rates at higher spatial resolution from GEO increase the probability of finding cloud-free pixels, leading to more observations of aerosols and trace gases than have been possible from LEO. GEMS will form the GEO AQ satellite constellation with the NASA’s Tropospheric Emissions: Monitoring of Pollution (TEMPO) launched in 2023 and planned ESA’s Sentinel-4 in 2025, as recognized by the Committee on Earth Observation Satellites (CEOS).
We are proud to present our Alumni of the Year Award to Professor Jhoon Kim.
Professor Jhoon Kim is a Yonsei Lee Youn Jae Fellow, a Fellow of Korean Academy of Science and Technology, and a professor of atmospheric science at Yonsei University in Seoul, South Korea.
He has worked on the remote sensing algorithm development of aerosol and trace gases to monitor their regional distribution. He is a P.I. of the Geostationary Environment Monitoring Spectrometer (GEMS), the first instrument for air quality monitoring from GEO at unprecedented spatial and temporal resolution. He developed sophisticated aerosol algorithm for GOCI, AHI, AGRI, and AMI, with machine learning and data fusion for better accuracy and coverage based on big data science. He has also worked on CO2 remote sensing using GOSAT and OCO series.
He earned a Ph.D. in Atmospheric and Space Sciences (now U-M Climate and Space) in 1991 at the University of Michigan College of Engineering, after earning an M.S. in Atmospheric Sciences at the University of Michigan College of Engineering in 1987. He earned his B.S. in Atmospheric Sciences at the College of Natural Sciences, Seoul National University, Seoul National University in 1986.
He is a member of the Committee on Earth Observing Satellites (CEOS) AC-VC, through which he has worked to establish coordinated global observation of air quality using GEO constellation. He is also a member of International Radiation Commission (IRC), WMO GURME Science Advisory Group (SAG), and WHO Global Platform for Air Quality and Health. He serves a guest editor for the Atmospheric Measurement Technique and Environmental Research Letter. He is also a member of the Science and Technology Committee and the National Council on Climate and Air Quality (NCCA) of Korea.
Abstract:
Satellite Remote Sensing of Atmospheric Composition from Geostationary Earth Orbit over Asia – My journey from planetary to Earth atmosphere
Featuring Dr. Jhoon Kim, Lee Youn Jae Fellow Professor of Atmospheric Sciences, Yonsei University, Seoul, Korea
Atmospheric composition including aerosols, ozone, air pollutants, and greenhouse gases have been observed extensively from Low Earth Orbit (LEO) providing one to two observations per day. Meteorological satellites have provided aerosol optical properties from both LEO and Geostationary Earth Orbit (GEO) for extended period. Geostationary Ocean Color Imager 2 (GOCI-II) and Advanced Meteorological Imager (AMI) have provided aerosol dataset from the same GK-2 platform. With the recent launch of the Geostationary Environment Monitoring Spectrometer (GEMS) onboard the GK-2B in 2020, we now can observe both aerosols and trace gases at unprecedented spatiotemporal resolution from GEO. GEMS, the first ultraviolet-visible hyperspectral instrument for air quality observation from GEO has provided column amounts of atmospheric pollutants (O3, NO2, SO2, HCHO, CHOCHO, and aerosols) every hour to capture their diurnal variations. Details of the GEMS data products are presented, with validations, and case studies of volcanic eruption, dust, wildfire, urban pollution, and industrial activities. In version 3, there are noticeable improvements in trace gases from updated AMF, fitting window, the separation of stratospheric/tropospheric components etc. Calibration/validation activities are critical to diagnose and improve the overall data quality including the ASIA-AQ, Pandora Asia network (PAN), PEGASOS, GMAP/SIJAQ, ACCLIP, and international CAL/VAL team works. The GEMS retrievals indicate good agreements from the validation campaigns, but still require further improvements in L1 processing as well. Faster sampling rates at higher spatial resolution from GEO increase the probability of finding cloud-free pixels, leading to more observations of aerosols and trace gases than have been possible from LEO. GEMS will form the GEO AQ satellite constellation with the NASA’s Tropospheric Emissions: Monitoring of Pollution (TEMPO) launched in 2023 and planned ESA’s Sentinel-4 in 2025, as recognized by the Committee on Earth Observation Satellites (CEOS).
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