Results 41 to 50 of about 60,400 (258)

Modeling Envisat RA-2 waveforms in the coastal zone: case-study of calm water contamination [PDF]

open access: yes, 2010
Radar altimeters have so far had limited use in the coastal zone, the area with most societal impact. This is due to both lack of, or insufficient accuracy in the necessary corrections, and more complicated altimeter signals. This paper examines waveform
Benveniste, Jérôme   +6 more
core   +2 more sources

Impact of sub-pixel variations on ocean color remote sensing products

open access: yesOptics Express, 2012
Passive remote sensing of the Earth system has used spatial resolutions ranging from meters to kilometers. It is thus necessary to understand how data products with different spatial resolutions can be compared with each other, and how sub-pixel variations may affect data comparison.
Lee, Zhongping   +3 more
openaire   +3 more sources

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

open access: yesInternational Journal of Climatology, EarlyView.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz   +1 more
wiley   +1 more source

Satellite Remote Sensing: Ocean Color [PDF]

open access: yes
Satellite ocean color instruments routinely provide global, synoptic views of the Earth's marine biosphere. These spaceborne radiometers measure light exiting the top of the atmosphere at discrete wavelengths in the ultraviolet to shortwave infrared ...
McClain, Charles R., Werdell, P. Jeremy
core   +1 more source

Diurnal Air–Surface Temperature Dynamics in Hong Kong: An Analysis Across Land Use and Climate Zones

open access: yesInternational Journal of Climatology, EarlyView.
Daytime and nighttime air temperature (Ta) from automatic weather stations and land surface temperature (Ts) derived from ASTER and Landsat 8–9 are used to examine the relationship between Ta and Ts. The spatial and statistical characteristics of Ta − Ts dynamics are further analysed across land use (LU) and local climate zones (LCZ).
Ibrahim Ademola Adeniran   +4 more
wiley   +1 more source

Bayesian Methodology for Ocean Color Remote Sensing

open access: yes, 2013
66 pagesThe inverse ocean color problem, i.e., the retrieval of marine reflectance from top-of-atmosphere (TOA) reflectance, is examined in a Bayesian context.
Frouin, Robert, Pelletier, Bruno
core   +1 more source

Identifying four phytoplankton functional types from space: An ecological approach [PDF]

open access: yes, 2008
Deriving maps of phytoplankton taxa based on remote sensing data using bio-optical properties of phytoplankton alone is challenging. A more holistic approach was developed using artificial neural networks, incorporating ecological and geographical ...
Haralabous, John   +5 more
core   +1 more source

Sunshine Duration in Brazil From Meteosat (1983–2020): Climatology, Variability and Long‐Term Trends

open access: yesInternational Journal of Climatology, EarlyView.
Using nearly four decades of Meteosat satellite data (1983–2020), this study presents a country‐wide climatology of sunshine duration (SDU) in Brazil. The results reveal marked regional contrasts, dominant modes of variability, and significant long‐term trends, providing new information on the most relevant meteorological systems that influence SDU and
Maria Lívia Lins Mattos Gava   +2 more
wiley   +1 more source

Desertification Risk: Bibliometric Analysis and Future Research Directions

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Desertification, driven by climatic and anthropogenic factors, is one of the most pressing global environmental challenges, causing significant economic, ecological, and social consequences. A bibliometric analysis was performed to identify research trends and gaps in the desertification risk topic.
Fatima‐Ezzahrae Imam   +5 more
wiley   +1 more source

Nimbus 7 Coastal Zone Color Scanner (CZCS). Level 1 data product users' guide [PDF]

open access: yes
The coastal zone color scanner (CZCS) is a scanning multispectral radiometer designed specifically for the remote sensing of Ocean Color parameters from an Earth orbiting space platform.
Hovis, W. A.   +2 more
core   +1 more source

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