Results 11 to 20 of about 9,195 (221)
Statewide Intensification of Harmful Algal Blooms Across California Lakes and Reservoirs. [PDF]
GeohealthAbstract Monitoring cyanobacteria is crucial for assessing water quality, safeguarding public health, and understanding ecosystem dynamics impacted by harmful algal blooms. This study explores the potential of satellite remote sensing (SRS) to assess risks of cyanotoxin exposure in California's recreational waters from 2002 to 2011 and 2016 to 2023 ...
Barreto Martinez BN +3 more
europepmc +2 more sources
A comparison between Envisat and ICESat sea ice thickness in the Southern Ocean [PDF]
The Cryosphere, 2022 The crucial role that Antarctic sea ice plays in the global climate system is strongly linked to its thickness. While field observations are too sparse in the Southern Ocean to determine long-term trends of the Antarctic sea ice thickness (SIT) on a ...
J. Wang +7 more
doaj +1 more source
Arctic sea ice radar freeboard retrieval from the European Remote-Sensing Satellite (ERS-2) using altimetry: toward sea ice thickness observation from 1995 to 2021 [PDF]
The Cryosphere, 2023 Sea ice volume's significant interannual variability requires long-term series of observations to identify trends in its evolution. Despite improvements in sea ice thickness estimations from altimetry during the past few years thanks to CryoSat-2 and ...
M. Bocquet +8 more
doaj +1 more source
Radar Analysis Approach to Assess the Status of Hydromorphotectonic Changes in Central Iran(Yazd Ardakan Plain) [PDF]
مخاطرات محیط طبیعی, 2020 The phenomenon of the subsidence of the Earth is called the downward movement of the Earth's surface, which is not easily identifiable and quantifiable due to its slow evolution.
Sedigheh Emami +2 more
doaj +1 more source
Remote Sensing, 2022 The relatively stable conditions of the sea ice cover in the Antarctic, observed for almost 40 years, seem to be changing recently. Therefore, it is essential to provide sea ice thickness (SIT) and volume (SIV) estimates in order to anticipate potential ...
Florent Garnier +7 more
doaj +1 more source
Rain-flagging of the Envisat altimeter [PDF]
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004 As the goals for altimetric measurements become ever more precise, there is concern about the reliable detection and discarding of rain contaminated data. A dual-frequency rain detection technique developed for the K/sub u/- and C-band TOPEX altimeter, is adapted for the K/sub u/- and S-band RA-2 altimeter on Envisat.
Quartly, Graham D., Srokosz, Meric A.
openaire +3 more sources
PRECISION AND DEVIATION COMPARISON BETWEEN ICESAT AND ENVISAT IN TYPICAL ICE GAINING AND LOSING REGIONS OF ANTARCTICA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 This paper analyzes the precision and deviation of elevations acquired from Envisat and The Ice, Cloud and Land Elevation Satellite (ICESat) over typical ice gaining and losing regions, i.e. Lambert-Amery System (LAS) in east Antarctica, and Amundsen Sea
W. Du +11 more
doaj +1 more source
Arctic Sea Ice Freeboard Retrieval from Envisat Altimetry Data
Remote Sensing, 2021 Arctic sea ice variations are sensitive to Arctic environmental changes and global changes. Freeboard and thickness are two important parameters in sea ice change research. Satellite altimetry can provide long-time and large-scale sea ice monitoring.
Shengkai Zhang +5 more
doaj +1 more source
RBRH, 2021 Radar altimeters are instruments carried on space missions and allow for determination of heights, particularly in oceans and ice sheets. The use of altimetry data on continental waters involves several challenges, such as the revisit frequency ...
Luana Kessia Lucas Alves Martins +3 more
doaj +1 more source
Remote Sensing, 2020 The Ocean and Land Colour Instrument (OLCI) on-board Sentinel-3 (2016–present) was designed with similar mechanical and optical characteristics to the Envisat Medium Resolution Imaging Spectrometer (MERIS) (2002–2012) to ensure continuity with a number ...
J. Pastor-Guzman +6 more
doaj +1 more source