Results 61 to 70 of about 1,210 (118)

Derivation and Evaluation of LAI from the ICESat-2 Data over the NEON Sites: The Impact of Segment Size and Beam Type

open access: yesRemote Sensing
The leaf area index (LAI) is a critical variable for forest ecosystem processes. Passive optical and active LiDAR remote sensing have been used to retrieve LAI.
Yao Wang, Hongliang Fang
doaj   +1 more source

Analysis of ICESat‐2 Data Acquisition Algorithm Parameter Enhancements to Improve Worldwide Bathymetric Coverage

open access: yesEarth and Space Science
A major advance in global bathymetric observation occurred in 2018 with the launch of NASA’s ICESat‐2 satellite, carrying a green‐wavelength, photon‐counting lidar, the Advanced Topographic Laser Altimeter System (ATLAS). Although bathymetric measurement
James T. Dietrich   +4 more
doaj   +1 more source

Assessing Thermospheric Neutral Density Models Using GEODYN's Precision Orbit Determination

open access: yesSpace Weather
This study focuses on utilizing the increasing availability of satellite trajectory data from global navigation satellite system‐enabled low‐Earth orbiting satellites and their precision orbit determination (POD) solutions to expand and refine ...
Z. C. Waldron   +11 more
doaj   +1 more source

Characterizing ICESat‐2 Snow Depths Over the Boreal Forests and Tundra of Alaska in Support of the SnowEx 2023 Campaign

open access: yesWater Resources Research
Recent studies show that the Ice, Clouds, and Land Elevation Satellite‐2 (ICESat‐2) can achieve decimeter‐level accuracy over forested and mountainous sites in the western United States, as well as over the glaciers of Alaska.
Zachary Fair   +6 more
doaj   +1 more source

Substantial potential of ICESat-2 photon-counting laser altimetry for reconstructing the lake water depth on the Tibetan Plateau

open access: yesInternational Journal of Digital Earth
The littoral zone is crucial in the aquatic ecosystem of lakes, and water depth is often insufficient when using the traditional zigzag echo-sounding method.
Baojin Qiao   +3 more
doaj   +1 more source

Creation of ICESat-2 Footprint Level Global Geodetic Control Points Using Crossover Analysis

open access: yesRemote Sensing
Precise measurements of the Earth’s surface are possible using satellite laser altimetry data, as demonstrated by NASA’s ICEsat-2 mission. Recently, the vertical accuracy of ICESat-2 data has been validated to
Amy Neuenschwander   +3 more
doaj   +1 more source

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