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Remote Sensing, Volume 13, Issue 15

August-1 2021 - 205 articles

Cover Story: The integration of multiple sources of water quality data via data assimilation can result in a more holistic characterization of inland and coastal waters and consequently improve water resource management, yet methods for scaling water quality data across regions and beyond have emerged only recently. In this paper, data sources and existing data integration frameworks are reviewed to give an overview of the present status and identify the gaps in existing frameworks. We propose an integration framework to provide information to user communities through the Group on Earth Observations (GEO) AquaWatch Initiative. This aims to develop and build the global capacity and utility of water quality data, products, and information to support equitable and inclusive access for water resource management, policy, and decision making. View this paper
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Articles (205)

  • Article
  • Open Access
35 Citations
7,105 Views
18 Pages

2 August 2021

Mapping biodiversity is essential for assessing conservation and ecosystem services in global terrestrial ecosystems. Compared with remotely sensed mapping of forest biodiversity, that of grassland plant diversity has been less studied, because of th...

  • Article
  • Open Access
1 Citations
2,780 Views
18 Pages

2 August 2021

In this paper, we propose a new reduced-dynamic (RD) method by introducing the second-order time-difference position (STP) as additional pseudo-observations (named the RD_STP method) for the precise orbit determination (POD) of low Earth orbiters (LE...

  • Article
  • Open Access
34 Citations
8,565 Views
26 Pages

2 August 2021

Wetlands are one of the most biologically productive ecosystems. Wetland ecosystem services, ranging from provision of food security to climate change mitigation, are enormous, far outweighing those of dryland ecosystems per hectare. However, land us...

  • Article
  • Open Access
3 Citations
3,392 Views
16 Pages

2 August 2021

Precise point positioning with ambiguity resolution (PPP-AR) based on multiple global navigation satellite system (multi-GNSS) constellations is an important high-precision positioning tool. However, some unmodeled satellite and receiver biases (such...

  • Article
  • Open Access
26 Citations
6,230 Views
14 Pages

Time-Series of Cloud-Free Sentinel-2 NDVI Data Used in Mapping the Onset of Growth of Central Spitsbergen, Svalbard

  • Stein Rune Karlsen,
  • Laura Stendardi,
  • Hans Tømmervik,
  • Lennart Nilsen,
  • Ingar Arntzen and
  • Elisabeth J. Cooper

2 August 2021

The Arctic is a region that is expected to experience a high increase in temperature. Changes in the timing of phenological phases, such as the onset of growth (as observed by remote sensing), is a sensitive bio-indicator of climate change. In this p...

  • Technical Note
  • Open Access
1 Citations
2,997 Views
14 Pages

2 August 2021

Synthetic aperture radar (SAR) provides high-resolution images of the Earth’s surface irrespective of sunlight and weather conditions. In conventional spaceborne SAR, nadir echoes caused by the pulsed operation of SAR may significantly affect the SAR...

  • Article
  • Open Access
17 Citations
7,632 Views
17 Pages

2 August 2021

Understory vegetation plays an important role in the structure and function of forest ecosystems. Light detection and ranging (LiDAR) can provide understory information in the form of either point cloud or full-waveform data. Point cloud data have a...

  • Article
  • Open Access
1 Citations
3,219 Views
21 Pages

Measurement of the Sea Surface Height with Airborne GNSS Reflectometry and Delay Bias Calibration

  • Feng Wang,
  • Dongkai Yang,
  • Guodong Zhang,
  • Jin Xing,
  • Bo Zhang and
  • Lei Yang

1 August 2021

Sea surface height can be measured with the delay between reflected and direct global navigation satellite system (GNSS) signals. The arrival time of a feature point, such as the waveform peak, the peak of the derivative waveform, and the fraction of...

  • Communication
  • Open Access
12 Citations
5,388 Views
11 Pages

Aircraft Detection above Clouds by Sentinel-2 MSI Parallax

  • Peder Heiselberg and
  • Henning Heiselberg

1 August 2021

Detection of aircrafts in satellite images is a challenging problem when the background is strongly reflective clouds with varying transparency. We develop a fast and effective detection algorithm that can find almost all aircrafts above and between...

  • Article
  • Open Access
8 Citations
5,231 Views
15 Pages

Empirical Approach for Modelling Tree Phenology in Mixed Forests Using Remote Sensing

  • Koffi Dodji Noumonvi,
  • Gal Oblišar,
  • Ana Žust and
  • Urša Vilhar

1 August 2021

Phenological events are good indicators of the effects of climate change, since phenological phases are sensitive to changes in environmental conditions. Although several national phenological networks monitor the phenology of different plant species...

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Remote Sens. - ISSN 2072-4292