A Comparison of River Streamflow Measurement from Optical and Passive Microwave Radiometry
  • Metaadatok
Tartalom: http://real.mtak.hu/181898/
Archívum: REAL
Gyűjtemény: Status = Published
Subject = Q Science / természettudomány: QE Geology / földtudományok: QE04 Meteorology / meteorológia
Type = Article
Cím:
A Comparison of River Streamflow Measurement from Optical and Passive Microwave Radiometry
Létrehozó:
Kugler, Zsófia
Horváth, Viktor Győző
Kiadó:
Országos Meteorológiai Szolgálat
Dátum:
2023
Téma:
QE04 Meteorology / meteorológia
Tartalmi leírás:
Climate change has a crucial impact on the global energy and water cycle. The hydrological cycle can be studied both from ground and satellite measurements on a global scale. Yet a comprehensive overview is challenging to establish given the spatial and temporal limitations related to various Earth Observation satellite sensors or maintenance of in-situ gauges. Optical remote sensing of visible light can not overcome the substantial obstacle from cloud cover that vastly limits its capability in daily global monitoring. Active satellite sensors like SAR or altimetry are not capable to provide global coverage on a daily basis, therefore, they can be geographically limited. Passive microwave radiometry (PMR) can acquire both daily and global scales that enables the temporally frequent and spatially extensive observations of continental river gauge. Previous studies demonstrated the use of PMR measurements for global daily river gauge benefiting from its high sensitivity of microwave radiation to water presence. This study aims at comparing the methodology of PMR to optical river gauge measurements based on the assumption that at selected locations along the river channel, increase in streamflow is related to increase in the floodplain water surface inundation. Comparison showed a significant obstacle of cloud cover over tropical regions, where PMR has the potential to measure river streamflow. Yet over regions with less clouds both optical and PMR can be good alternative to in-situ streamflow ground measurements.
Nyelv:
angol
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Kugler, Zsófia and Horváth, Viktor Győző (2023) A Comparison of River Streamflow Measurement from Optical and Passive Microwave Radiometry. IDŐJÁRÁS / QUARTERLY JOURNAL OF THE HUNGARIAN METEOROLOGICAL SERVICE, 127 (4). pp. 473-484. ISSN 0324-6329
Kapcsolat:
MTMT:34417883 DOI: 10.28974/idojaras.2023.4.4