نتایج جستجو برای: satellite altimetry

تعداد نتایج: 81044  

2009
AKIHIKO MORIMOTO

The magnitude and geographical distribution of the error in the Archiving, Validation and Interpretation of Satellite Oceanographic data (AVISO) altimetry data associated with tidal correction around Asian marginal seas has been revealed. The errors were evaluated by harmonic analysis of the AVISO corrected sea surface heights data (CorSSH). Errors of more than 15 cm of tidal correction were re...

Journal: :Remote Sensing 2014
Melanie Becker Joecila Santos da Silva Stéphane Calmant Vivien Robinet Laurent Linguet Frédérique Seyler

In the Congo Basin, the elevated vulnerability of food security and the water supply implies that sustainable development strategies must incorporate the effects of climate change on hydrological regimes. However, the lack of observational hydro-climatic data over the past decades strongly limits the number of studies investigating the effects of climate change in the Congo Basin. We present th...

2015
Jun Tang Yibin Yao Liang Zhang Jian Kong

The insufficiency of data is the essential reason for ill-posed problem existed in computerized ionospheric tomography (CIT) technique. Therefore, the method of integrating multi-source data is proposed. Currently, the multiple satellite navigation systems and various ionospheric observing instruments provide abundant data which can be employed to reconstruct ionospheric electron density (IED)....

2013
DAVID SANDWELL EMMANUEL GARCIA

M than 60% of the Earth’s land and shallow marine areas are covered by > 2 km of sediments and sedimentary rocks, with the thickest accumulations on rifted continental margins (Figure 1). Free-air marine gravity anomalies derived from Geosat and ERS-1 satellite altimetry (Fairhead et al., 2001; Sandwell and Smith, 2009; Andersen et al., 2009) outline most of these major basins with remarkable p...

2017
B. D. Hamlington P. Thompson W. C. Hammond G. Blewitt R. D. Ray

Near-global and continuous measurements from satellite altimetry have provided accurate estimates of global mean sea level in the past two decades. Extending these estimates further into the past is a challenge using the historical tide gauge records. Not only is sampling nonuniform in both space and time, but tide gauges are also affected by vertical land motion (VLM) that creates a relative s...

2015
Chunqiao Song Qinghua Ye Yongwei Sheng Tongliang Gong Jun Xu

Long-term observations of lake water level are essential to our understanding of the evolution of Tibetan lake system. CryoSat-2 radar altimetry data over the Tibetan Plateau (2010–2014, P2) is used to extend lake level measurements from ICESat laser altimetry (2003–2009, P1). This study evaluates the performance of CryoSat-2 data by comparing with gauge-based water levels that are calibrated b...

Journal: :Remote Sensing 2023

Satellite laser altimetry has been widely used for monitoring surface height changes in inland waters. However, constructing time series of water levels is partially limited temporal resolution only based on the individual orbit altimeter observations. To densify and optimize altimetry-based crucial to scientific understanding lake hydrologic dynamics. This paper focuses synthesizing multi-orbi...

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