Results 51 to 60 of about 7,259,736 (298)

Validation of the LaSRC Cloud Detection Algorithm for Landsat 8 Images [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
This study aims at validating the cloud mask produced by the land surface reflectance code (LaSRC) for Landsat 8 data. To detect clouds in optical satellite imagery, LaSRC uses quality assurance (QA) layers, which are produced during the atmospheric correction process. The QA layers include a “cloud mask,” which is based on the estimation of a residual
Skakun, Sergii, Vermote, Eric, Roger, Jean-Claude, Justice, Christopher, Masek, Jeffrey   +4 more
openaire   +2 more sources

Butterfly abundances but not patch occupancy buffered by vegetation heterogeneity during climatic extremes

Ecography, EarlyView.
As extreme climatic events are becoming more frequent, we need to understand what mechanisms could buffer populations to ensure their persistence. Fragmented populations may be especially vulnerable, as exemplified by species with metapopulation dynamics whose persistence is determined by a precarious balance between frequent local extinctions and ...
Natalie E. van Dis, Mirkka M. Jones, Pekka Niittynen, Miska Luoto, Jukka Sirén, Marjo Saastamoinen   +5 more
wiley   +1 more source

The Performance of Landsat-8 and Landsat-9 Data for Water Body Extraction Based on Various Water Indices: A Comparative Analysis

Remote Sensing
The rapid and accurate extraction of water information from satellite imagery has been a crucial topic in remote sensing applications and has important value in water resources management, water environment monitoring, and disaster emergency management ...
Jie Chen, Yankun Wang, Jingzhe Wang, Yinghui Zhang, Yue Xu, Ou Yang, Rui Zhang, Jing Wang, Zhensheng Wang, Feidong Lu, Zhongwen Hu   +10 more
doaj   +1 more source

Evapotranspiration Estimation and Irrigation Performance Assessment Using Remote Sensing: A Case Study of the Ergani Dam Irrigation System (Turkey)

Irrigation and Drainage, EarlyView.
ABSTRACT Efficient water resource management is critical for sustainable agriculture, with evapotranspiration (ET) serving as a key parameter. Remote sensing (RS) techniques offer cost‐effective approaches for ET estimation and irrigation performance assessment in extensive agricultural systems.
Kivanç Hayri Doganay, Bekir Sitki Karatas   +1 more
wiley   +1 more source

A tool for global and regional Landsat 7 and Landsat 8 cross-sensor harmonization

Geocarto International
The Landsat archive can be used to track long-term landscape and environmental changes. However, substantial differences in atmospheric correction algorithms, radiometric resolution, and spectral response functions suggest that harmonization models ...
Galen Richardson, Anders Knudby, Koreen Millard, Wenjun Chen   +3 more
doaj   +1 more source

High-Resolution Vegetation Mapping in Japan by Combining Sentinel-2 and Landsat 8 Based Multi-Temporal Datasets through Machine Learning and Cross-Validation Approach

Land, 2017
This paper presents an evaluation of the multi-source satellite datasets such as Sentinel-2, Landsat-8, and Moderate Resolution Imaging Spectroradiometer (MODIS) with different spatial and temporal resolutions for nationwide vegetation mapping.
Ram C. Sharma, Keitarou Hara, Ryutaro Tateishi   +2 more
doaj   +1 more source

Analysis of Landsat 8 detection of the interannual variability of grassland curing in Greater Melbourne, Australia

International Journal of Digital Earth, 2020
As one of the main components of Grassland Fire Danger Index, grassland curing degree provides crucial information for determining grassland fire danger. Accurate estimates of grassland curing are critical for determining grassland fire risk.
Sike Li
doaj   +1 more source

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

Irrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen, Chris Perry, Royce Dalby, Yasir Mohamed, Xueliang Cai, Poolad Karimi, IJsbrand de Jong, Pasquale Steduto, Marat Beksultanov, Christopher C. M. Neale, David Molden, Waqas Awan, Laarousi Mohamed, Jippe Hoogeveen, Jeff Davids, Nutchanart Sriwongsitanon, P. S. Rao, Roula Bachour, Palitha Bandara, Sophea Chhim, Richard Evans, Tom Lahad, D. Nagesh Kumar, Zakaria Adawy, Devendra Singh Bundela, Kawa Hakzi, Isaya Kisekka, Nicolas Puelma, Alejandro A. Pannunzio, Benjamin Koetz, Mukhiddin Ibragimov   +30 more
wiley   +1 more source

Fractures models comparison using GIS data around crater lakes in Cameroon volcanic line environment

Egyptian Journal of Remote Sensing and Space Sciences, 2021
This study assesses the contribution of Landsat 7 ETM + and Landsat 8 OLI images to observe existing fractures and faults of at least 12 km in length around the lakes Nyos, Monoun and Oku whose are three major crater lakes in the Cameroon Volcanic Line ...
Marthe Mbond Ariane Gweth, Harlin Ekoro Nkoungou, Jorelle Larissa Meli'i, Daniel Hervé Gouet, Philippe Njandjock Nouck   +4 more
doaj   +1 more source

Sun-glint imagery of Landsat 8 for ocean surface waves [PDF]

Remote Sensing of the Open and Coastal Ocean and Inland Waters, 2018
Local changes in specular reflections of visible sunlight on the ocean surfaces can be captured effectively by satellite sensors operating in the visible range of the electromagnetic spectrum. This causes the sun-glint imagery to closely resemble the oceanic images obtained using Synthetic Aperture Radar (SAR) further allowing the identification of the
Misra, Ankita, Chapron, Bertrand, Nouguier, Frederic, Ramakrishnan, Balaji, Yurovskaya, Maria   +4 more
openaire   +2 more sources