TY - GEN
T1 - Monitoring Surface Water Content and Biogeochemical Responses In The Area Surrounding River Mouths Using Multi-Source Satellite Remote Sensing
AU - Kim, Youngwook
AU - Park, Ji Hyung
AU - Du, Jinyang
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Rivers contribute to carrying biogeochemical constituents from terrestrial to marine biospheres. Land-margin ecosystems in rivers are critical ecosystems that provide an interaction between land and ocean. The ecosystems have experienced increasing climate and environmental changes in recent years. The variations of the surface water at the river mouth areas are closely linked with the changes in biogeochemical cycles, including greenhouse gas emission. Multi-source environmental remote sensing data records were utilized to analyze the relationship between surface open water fraction (Fw) and various environmental and biogeochemical parameters, such as precipitation, surface soil moisture, root-zone soil moisture, heterotrophic respiration, and CH4. The study focused on 253 river mouth locations, which were determined using the MERIT-Hydro map. The long-term (2002-2021) Fw data shows a strong, negative trend in the mean annual summer (Jun - Aug) Fw in northern low latitudes (<45°N), there is a positive trend in northern high latitude (>45°N). The results show that 46% of the river mouths has a decreasing Fw trend, implying drier surface moisture conditions. The correlation results show the stronger correspondence between Fw and carbon variables at the river mouth.
AB - Rivers contribute to carrying biogeochemical constituents from terrestrial to marine biospheres. Land-margin ecosystems in rivers are critical ecosystems that provide an interaction between land and ocean. The ecosystems have experienced increasing climate and environmental changes in recent years. The variations of the surface water at the river mouth areas are closely linked with the changes in biogeochemical cycles, including greenhouse gas emission. Multi-source environmental remote sensing data records were utilized to analyze the relationship between surface open water fraction (Fw) and various environmental and biogeochemical parameters, such as precipitation, surface soil moisture, root-zone soil moisture, heterotrophic respiration, and CH4. The study focused on 253 river mouth locations, which were determined using the MERIT-Hydro map. The long-term (2002-2021) Fw data shows a strong, negative trend in the mean annual summer (Jun - Aug) Fw in northern low latitudes (<45°N), there is a positive trend in northern high latitude (>45°N). The results show that 46% of the river mouths has a decreasing Fw trend, implying drier surface moisture conditions. The correlation results show the stronger correspondence between Fw and carbon variables at the river mouth.
KW - carbon cycle
KW - climate change
KW - open water fraction
KW - river mouths
KW - soil moisture
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U2 - 10.1109/IGARSS52108.2023.10283466
DO - 10.1109/IGARSS52108.2023.10283466
M3 - Conference contribution
AN - SCOPUS:85178374376
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 3742
EP - 3744
BT - IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2023
Y2 - 16 July 2023 through 21 July 2023
ER -