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X-WR-CALDESC:Events for ESA Science Hub
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DTSTART;TZID=Europe/Rome:20240902T101500
DTEND;TZID=Europe/Rome:20240902T111500
DTSTAMP:20260423T224535
CREATED:20240902T080517Z
LAST-MODIFIED:20260413T144201Z
UID:4243-1725272100-1725275700@sciencehub.esa.int
SUMMARY:Science Talk: Giulia Roccetti
DESCRIPTION:Giulia Roccetti is a PhD student at the Ludwig-Maximilian University of Munch and the European South Observatory. Her presentation at the Science Hub will address one of the topics of her PhD. \n\n\n\nhttps://giulia-roccetti.github.io \n\n\n\nProbing cloud and surface properties in disk-integrated Earth’s observations \n\n\n\nAbstract:  \n\n\n\nEarthshine\, which is the sunlight reflected by the Earth onto the Moon\, allows for the acquisition of disk-integrated properties of the illuminated side of the Earth in a single snapshot. To simulate these observations\, we perform realistic 3D radiative transfer simulations with MYSTIC\, incorporating the full complexity and variability of the planet. To this end\, we developed the first hyperspectral albedo maps dataset for Earth (HAMSTER)\, which includes the spatial and temporal variability of surface features as a function of wavelength. Additionally\, we developed a 3D cloud generator approach to accurately represent patchy clouds based on the ERA5 reanalysis product. Only by including detailed cloud and surface modeling were we able to match the observations\, suggesting that the radiative response of clouds and an accurate surface albedo representation are crucial for a comprehensive interpretation of Earth’s observations. This treatment of cloud and surface properties may have many applications in Earth’s remote sensing and Earth System Models. \n\n\n\n\n\nPresentation slides
URL:https://sciencehub.esa.int/event/science-talk-giulia-rocetti/
LOCATION:ESRIN Science Hub\, Via Galileo Galilei\, 1\, Frascati\, RM\, 00044\, Italy
CATEGORIES:Science Talks
ATTACH;FMTTYPE=image/png:https://sciencehub.esa.int/wp-content/uploads/2024/09/Giulia-Roccetti.png
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BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20240913T160000
DTEND;TZID=Europe/Rome:20240913T170000
DTSTAMP:20260423T224535
CREATED:20240910T105541Z
LAST-MODIFIED:20240910T105758Z
UID:4280-1726243200-1726246800@sciencehub.esa.int
SUMMARY:Improving the reconstruction of upper ocean dynamics from space
DESCRIPTION:Final presentation of research fellow Florian Le Guillou.  \n\n\n\n\n\nAbstract: \n\n\n\nThe use of satellite data has revolutionized the study of upper ocean dynamics\, offering global\, continuous\, and real-time information about various physical processes at the ocean’s surface. These data provide key insights into ocean circulation\, temperature distribution\, wave patterns\, and other dynamic factors. For instance\, Sea Surface Height (SSH)\, observed by altimetry\, is a key variable for monitoring ocean circulation. Similarly\, Sea Surface Temperature (SST) serves as a crucial indicator of heat exchange between the ocean and atmosphere. \n\n\n\nTypically\, scientific\, and operational applications require gap-free\, gridded satellite data (L4 products). However\, operational algorithms often depend on basic interpolation techniques applied to L3 satellite data\, which tend to filter out fine-scale processes. In this presentation\, I will introduce a hybrid methodology which combines minimal physically based constraints with a variational scheme to enhance the mapping capabilities of upper ocean dynamics. By synthesizing multi-modal satellite observations\, the method improves the accuracy and resolution of SSH and SST maps in comparison to operational products. Applications of the method will be discussed\, including the reconstruction of 3D dynamics from surface data\, the refinement of SSH climate records\, and the estimation of air-sea fluxes.
URL:https://sciencehub.esa.int/event/improving-the-reconstruction-of-upper-ocean-dynamics-from-space/
LOCATION:ESRIN Science Hub\, Via Galileo Galilei\, 1\, Frascati\, RM\, 00044\, Italy
CATEGORIES:Science Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20240924T100000
DTEND;TZID=Europe/Rome:20240924T110000
DTSTAMP:20260423T224535
CREATED:20240903T090808Z
LAST-MODIFIED:20241007T174436Z
UID:4274-1727172000-1727175600@sciencehub.esa.int
SUMMARY:Science Talk: Dr Luis Guanter
DESCRIPTION:The MethaneSAT mission for the detection and quantification of anthropogenic methane emissions: overview and first results \n\n\n\n\n\n\n\n\n\nAbstract: \n\n\n\nMitigating anthropogenic methane emissions is vital for reducing the rate of global warming. Under the scientific lead of the Environmental Defense Fund and Harvard University\, the MethaneSAT satellite mission is designed to detect and quantify anthropogenic methane emissions around the world\, in order to help mitigate emissions and develop global policy-relevant emission database efforts such as the International Methane Emissions Observatory.  \n\n\n\nMethaneSAT was launched on 4 March 2024 and has recently completed its commissioning phase. The instrument consists of two spectrometers\, one covering the 1249-1305 nm window sampling oxygen absorption\, and one covering 1598-1683 nm for methane and CO2 retrievals\, with <0.1 nm spectral sampling and <0.3 nm spectral resolution\, which will enable methane concentration maps with high accuracy and precision. The mission will sample up to 25 sites per day\, with a swath width of about 220 km and a spatial sampling of about 110 m x 400 m. These capabilities uniquely allow MethaneSAT to quantify total regional methane emissions\, at the same time detect high-emitting point sources and characterize diffuse area sources. This measurement approach is being tested and consolidated through a series of flight campaigns across U.S. oil and gas basins with the MethaneAIR instrument\, MethaneSAT’s airborne demostrator.  \n\n\n\nMethaneSAT will provide quantitative data products on methane emission rates focusing on the majority of worldwide oil and gas production\, with additional capacity to measure emissions from other sectors including agriculture. Operational data products related to methane emissions will be made freely available in the public domain via MethaneSAT’s data platform and the Google Cloud. \n\n\n\nSpeaker Bio: \n\n\n\nDr Luis Guanter – Environmental Defence Fund \n\n\n\nLuis Guanter obtained his degree in Physics in 2002 and his Ph.D. in Environmental Physics in 2007\, both from the Universitat de València (Spain). After several postdoctoral positions in Germany and UK\, he became Head of the Remote Sensing Section of the GFZ Potsdam in Germany and the Principal Investigator of the satellite imaging spectroscopy mission in 2014. Since March 2019 he is a Full Professor in Applied Physics at the Universitat Politècnica de València (UPV) in Spain\, where he is leading the LARS (Land and Atmosphere Remote Sensing) group in January 2020. Since March 2022 Luis Guanter is sharing his position at UPV with a methane remote sensing scientist position at the Environmental Defense Fund. Luis Guanter has been included in Clarivate’s Highly Cited Researchers List of the world’s most influential scientists since 2019. \n\n\n\n \n\n\n\nhttps://luiguapa.webs.upv.es/
URL:https://sciencehub.esa.int/event/science-talk-dr-luis-guanter-2/
LOCATION:ESRIN Science Hub\, Via Galileo Galilei\, 1\, Frascati\, RM\, 00044\, Italy
CATEGORIES:Science Talks
ATTACH;FMTTYPE=image/jpeg:https://sciencehub.esa.int/wp-content/uploads/2024/09/2023-MethSatMission_2800x2100px_01-1.jpg
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