نتایج جستجو برای: landsat 5 and 8

تعداد نتایج: 17095448  

2001
James E. Vogelmann Dennis Helder Ron Morfitt Michael J. Choate James W. Merchant Henry Bulley

The Thematic Mapper (TM) instruments onboard Landsats 4 and 5 provide high-quality imagery appropriate for many different applications, including land cover mapping, landscape ecology, and change detection. Precise calibration was considered to be critical to the success of the Landsat 7 mission and, thus, issues of calibration were given high priority during the development of the Enhanced The...

Journal: :International journal of environment and geoinformatics 2021

This paper presents the potential for soil moisture (SM) retrieval using Sentinel-1 C-band Synthetic Aperture Radar (SAR) data acquired in Interferometric Wide Swath (IW) mode along with Land Surface Temperature (LST) estimated from analysis of LANDSAT-8 digital thermal data. In this study on 27 February 2020 was downloaded Copernicus website and OLI 24 https://earthexplorer.usgs.gov/.The sampl...

Journal: :Sustainability 2022

Landsat 9 enhances the radiation resolution of operational land imager from 12 bits 8 to 14 bits. The higher improves sensitivity sensor detect many subtler differences, especially in case dense forests or water. However, it remains unclear whether difference between and actually affects classification results water tree species. Accordingly, spectral reflectance vegetation indices were extract...

Journal: :J. Imaging 2015
Heather Grybas Russell G. Congalton

The assessment of storm damages is critically important if resource managers are to understand the impacts of weather pattern changes and sea level rise on their lands and develop management strategies to mitigate its effects. This study was performed to detect land cover change on Assateague Island as a result of Hurricane Sandy. Several single-date classifications were performed on the pre an...

Journal: :Remote Sensing 2016
Rasmus Houborg Matthew F. McCabe

Planet Labs (“Planet”) operate the largest fleet of active nano-satellites in orbit, offering an unprecedented monitoring capacity of daily and global RGB image capture at 3–5 m resolution. However, limitations in spectral resolution and lack of accurate radiometric sensor calibration impact the utility of this rich information source. In this study, Planet’s RGB imagery was translated into a N...

Journal: :Remote Sensing 2017
Linqing Yang Kun Jia Shunlin Liang Xiangqin Wei Yunjun Yao Xiaotong Zhang

Fractional vegetation cover (FVC) is an essential land surface parameter for Earth surface process simulations and global change studies. The currently existing FVC products are mostly obtained from low or medium resolution remotely sensed data, while many applications require the fine spatial resolution FVC product. The availability of well-calibrated coverage of Landsat imagery over large are...

Journal: :Remote Sensing 2016
Jean-Pierre Dedieu Bradley Z. Carlson Sylvain Bigot Pascal Sirguey Vincent Vionnet Philippe Choler

We investigated snow cover dynamics using time series of moderate (MODIS) to high (SPOT-4/5, Landsat-8) spatial resolution satellite imagery in a 3700 km2 region of the southwestern French Alps. Our study was carried out in the context of the SPOT (Take 5) Experiment initiated by the Centre National d’Etudes Spatiales (CNES), with the aim of exploring the utility of high spatial and temporal re...

2010
Susan K Maxwell Matthew Airola John R Nuckols

BACKGROUND The recent U.S. Geological Survey policy offering Landsat satellite data at no cost provides researchers new opportunities to explore relationships between environment and health. The purpose of this study was to examine the potential for using Landsat satellite data to support pesticide exposure assessment in California. METHODS AND RESULTS We collected a dense time series of 24 L...

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