Results 71 to 80 of about 5,793 (300)

Atmospheric Correction of Satellite Ocean Color Remote Sensing in the Presence of High Aerosol Loads

, 2019
The coverage of valid pixels of remote-sensing reflectance (Rrs) from ocean color imagery is relatively low due to the presence of clouds. In fact, it is also related to the presence of high aerosol optical depth (AOD) and other factors.
Jianyu Chen, Haiqing Huang, Bangyi Tao, Zengzhou Hao, Zhihua Mao, Peng Chen, Qiankun Zhu   +6 more
core   +1 more source

Tracking Summer Greenland Blocking: The Upstream Pathway Shapes Historical Extremes and Future Change

International Journal of Climatology, EarlyView.
This study investigates summer Greenland atmospheric blocking using the Lagrangian tracking Python package blocktrack applied to ERA5 reanalysis and CMIP6 models. Two types of blocks—upstream (Northern Canada origin) and retrograding (Northern Atlantic origin)—are distinguished, with upstream blocks driving recent observed frequency increasing trends ...
Michele Filippucci, Jacob Maddison, Simona Bordoni   +2 more
wiley   +1 more source

System vicarious calibration and ocean color retrieval from the HY-1C UVI

International Journal of Applied Earth Observations and Geoinformation
Ultraviolet (UV) remote sensing plays a critical role in understanding photochemical and biological processes in the global ocean. While UV radiation significantly influences the marine environment, the limited availability of global UV measurements has ...
Junwei Wang, Shuguo Chen, Shixian Hu, Linke Deng, Chaofei Ma, Hailong Peng, Qingjun Song   +6 more
doaj   +1 more source

Impacts of Climate Change on Food Security: Land Management–Based Strategies Within a Nature‐Based Solutions Framework

Land Degradation &Development, EarlyView.
ABSTRACT Climate change poses serious threats to food security by affecting agricultural production processes in multiple ways. This study aims to analyze land management–based solution strategies that can be developed in response to this threat and presents a systematic and holistic framework through the relationship these strategies establish with ...
Nihal Genc, H. Ebru Colak
wiley   +1 more source

Neural Network Reflectance Prediction Model for Both Open Ocean and Coastal Waters

Remote Sensing, 2020
Remote sensing of global ocean color is a valuable tool for understanding the ecology and biogeochemistry of the worlds oceans, and provides critical input to our knowledge of the global carbon cycle and the impacts of climate change.
Lipi Mukherjee, Peng-Wang Zhai, Meng Gao, Yongxiang Hu, Bryan A. Franz, P. Jeremy Werdell   +5 more
doaj   +1 more source

Ocean color remote sensing: choosing the correct depth weighting function

Optics Express, 2008
Values of reflectance and remote sensing reflectance are proportional to the ratio of sea water backscattering to absorption. However, in vertically non-homogeneous waters, this fraction needs to be depth weighted. The usual practice uses normalized vertical transmittance profiles as the weighting function.
Jacek, Piskozub, Tomasz, Neumann, Ludomir, Woźniak   +2 more
openaire   +2 more sources

Improving Digital Mapping of Soil Organic Carbon and Total Nitrogen Through Integration of Sentinel‐1 Backscatter, InSAR Coherence, and Sentinel‐3 OLCI/SLSTR Observations

Land Degradation &Development, EarlyView.
ABSTRACT The potential of optical satellites for the spatial prediction of soil organic carbon (SOC) and total nitrogen (STN) has long been recognized. Owing to their balanced spatial–temporal resolution, multisource observational capabilities, and unprecedented availability of free data, Sentinel satellites offer unique opportunities for mapping soil ...
Tao Zhou, Xueting Zheng, Hongmin Zhang, Yajun Geng, Huijie Li, Junming Liu, Tingting Liu, Asim Biswas, Bingcheng Si   +8 more
wiley   +1 more source

Improving satellite ocean color remote sensing products under absorbing aerosol conditions

Frontiers in Marine Science
Ocean color remote sensing is vital for monitoring marine ecosystems, but accurate retrieval of ocean color parameters remains challenging in regions affected by strongly absorbing aerosols such as dust, biomass burning, and industrial pollution.
Zigeng Song, Wang Man, Fang Gong, Qin Nie, Zongmei Li, Xiaofeng Du, Yushan Jiang, Yingxue Zeng, Xinchang Zhang   +8 more
doaj   +1 more source

Estimation of Chlorophyll-a in Northern Coastal Bay of Bengal Using Landsat-8 OLI and Sentinel-2 MSI Sensors

Frontiers in Marine Science, 2019
Chlorophyll-a can be used as a proxy for phytoplankton and thus is an essential water quality parameter. The presence of phytoplankton in the ocean causes selective absorption of light by chlorophyll-a pigment resulting in change of the ocean color that ...
Shukla Poddar, Neethu Chacko, Debadatta Swain   +2 more
doaj   +1 more source

Small Angle Scattering Intensity Measurement by an Improved Ocean Scheimpflug Lidar System

, 2021
Quantification of the horizontal patterns of phytoplankton and the distribution of suspended particles across the sea’s surface has been greatly improved by traditional passive oceanic color remote sensing technology.
Hongwei Zhang, Yuanshuai Zhang, Bin Yin, Ziwang Li, Songhua Wu, Bingyi Liu   +5 more
core   +1 more source