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NOAA Seminar Series: Remote sensing of extreme weather events on CDOM in Long Island Sound
Title: Remote sensing of extreme weather events on CDOM in Long Island Sound
Presenter(s): Charlotte Rhoads
Date: 25 October 2024 1:30 pm – 2:00 pm ET
Remote Access: Google Meet joining info
Video call link: https://meet.google.com/gnq-msir-wvj
Or dial: (US) +1 267-553-4621 PIN: 434 202 737#
More phone numbers: https://tel.meet/gnq-msir-wvj?pin=9872489736362
About Speaker: Charlotte Rhoads
Abstract: Coastal areas are critical in global carbon cycling, particularly as climate change alters carbon fluxes through rising temperatures, shifting precipitation patterns, and sea-level rise. These changes affect microbial activity, carbon remineralization, and transportation pathways, influencing the fate of carbon in coastal environments. Dissolved organic matter (DOM), sourced from land and sea, regulates ecosystem functioning, while colored dissolved organic matter (CDOM) acts as an optical proxy for tracking DOM dynamics. Extreme weather events modify DOM quantity and quality, impacting harmful algal blooms (HABs). In Long Island Sound (LIS), a eutrophic estuary, high-resolution satellite remote sensing, and regionally optimized algorithms enable monitoring of DOM and its response to extreme precipitation events. By analyzing CDOM’s optical properties, such as aCDOM(300),DOC, S275″295, and SR, changes in DOM can be linked to carbon cycling and water quality. Increased DOM flux during heavy rains drives dinoflagellate blooms, posing threats to water quality and aquaculture. Identifying CDOM optical signatures of harmful dinoflagellates like Prorocentrumcordatum and Margalefidinium polykrikoides may allow for monitoring via remote sensing. The results are from the NOAA EPP/MSI CSC NERTO graduate internship project that was conducted with NOAA mentors Veronica Lance and Jonathan Sherman of NESDIS and Gary Wilkfors and Lisa Guy of NOAA Fisheries. The NERTO aligns with NOAACSC CESSRST-II’s goal of providing actionable remote sensing-based research to stakeholders. The NERTO deepened the intern’s understanding of NOAA’s mission of managing and protecting coastal ecosystems and resources.