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Remote Sensing of Rivers: Applicatio...

Gehring, Jaclyn Mary.

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Remote Sensing of Rivers: Applications for Streamflow and Carbon Flux Estimations.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Remote Sensing of Rivers: Applications for Streamflow and Carbon Flux Estimations./
Author:	Gehring, Jaclyn Mary.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	140 p.
Notes:	Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
Contained By:	Dissertations Abstracts International85-10B.
Subject:	Remote sensing. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31239716
ISBN:	9798382319087

Remote Sensing of Rivers: Applications for Streamflow and Carbon Flux Estimations.
Gehring, Jaclyn Mary.

Remote Sensing of Rivers: Applications for Streamflow and Carbon Flux Estimations. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 140 p.

Source: Dissertations Abstracts International, Volume: 85-10, Section: B.

Thesis (Ph.D.)--Northeastern University, 2024.

Rivers are drivers of Earth's hydrologic and biogeochemical cycles-transporting water and materials to the world's oceans. Understanding changes in global hydrology as a result of climate-induced impacts is difficult due to the decline of globally available in-situ measurements, nonexistent data in remote regions of the world, and geopolitical limitations. Advancements in remote sensing have provided means to combat these challenges, allowing for the derivation of river quantity and quality parameters. Using remote sensing to derive river discharge time series, we contribute to methodologies and insights to three key research challenges related to globally important rivers and associated fluxes. In the first chapter, we analyze how the Surface Water and Ocean Topography (SWOT) mission and its irregular sampling frequency may impact the observed hydrology in rivers, and provide insight into leveraging future SWOT data. We find the irregular SWOT orbit may be better suited for larger, more stable rivers, and the hydrology of smaller, flashier rivers may be more sensitive to fewer observations. In the second chapter, we demonstrate the potential of satellite gravimetry and altimetry for estimating river discharge time series and focus on the differences that arise from process-based approaches. Our results suggest greater limitations of regionalized GRACE/GRACE-FO for river discharge derivations particularly in arctic rivers, as well as limitations using satellite altimetry where river channel dynamics are complex (e.g., Amazon). The last chapter combines remotely sensed river discharges with measurements of dissolved organic carbon concentrations for extended records of carbon flux estimates globally. We highlight the significance of capturing peak discharge events using remote sensing methods, and further examine how LOADEST models vary within reaches. The insights of this research contribute advancements toward a greater understanding of remote sensing tools for evaluating river discharge time series and subsequent applications for filling gaps in constituent flux estimations.

ISBN: 9798382319087Subjects--Topical Terms:

535394
Remote sensing.
Subjects--Index Terms:

Carbon

Remote Sensing of Rivers: Applications for Streamflow and Carbon Flux Estimations.
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