scholarly journals Correlations among the optical properties of cirrus-cloud particles: Implications for spaceborne remote sensing

2002 ◽  
Vol 29 (14) ◽  
pp. 13-1-13-4 ◽  
Author(s):  
J. Reichardt ◽  
S. Reichardt ◽  
A. Behrendt ◽  
T. J. McGee
Keyword(s):  
Remote Sensing ◽  
Optical Properties ◽  
Cirrus Cloud ◽  
Cloud Particles

scholarly journals Correlations among the optical properties of cirrus-cloud particles: Microphysical interpretation

2002 ◽  
Vol 107 (D21) ◽  
pp. AAC 8-1-AAC 8-12 ◽  
Author(s):  
J. Reichardt ◽  
S. Reichardt ◽  
M. Hess ◽  
T. J. McGee
Keyword(s):  
Optical Properties ◽  
Cirrus Cloud ◽  
Cloud Particles

scholarly journals Plant ecophysiological processes in spectral profiles: perspective from a deciduous broadleaf forest

2021 ◽  
Author(s):  
Hibiki M. Noda ◽  
Hiroyuki Muraoka ◽  
Kenlo Nishida Nasahara
Keyword(s):  
Remote Sensing ◽  
Optical Properties ◽  
Spectral Reflectance ◽  
Canopy Structure ◽  
Terrestrial Ecosystems ◽  
Optical Remote Sensing ◽  
Canopy Reflectance ◽  
Broadleaf Forest ◽  
Leaf Optical Properties ◽  
Deciduous Broadleaf Forest

AbstractThe need for progress in satellite remote sensing of terrestrial ecosystems is intensifying under climate change. Further progress in Earth observations of photosynthetic activity and primary production from local to global scales is fundamental to the analysis of the current status and changes in the photosynthetic productivity of terrestrial ecosystems. In this paper, we review plant ecophysiological processes affecting optical properties of the forest canopy which can be measured with optical remote sensing by Earth-observation satellites. Spectral reflectance measured by optical remote sensing is utilized to estimate the temporal and spatial variations in the canopy structure and primary productivity. Optical information reflects the physical characteristics of the targeted vegetation; to use this information efficiently, mechanistic understanding of the basic consequences of plant ecophysiological and optical properties is essential over broad scales, from single leaf to canopy and landscape. In theory, canopy spectral reflectance is regulated by leaf optical properties (reflectance and transmittance spectra) and canopy structure (geometrical distributions of leaf area and angle). In a deciduous broadleaf forest, our measurements and modeling analysis of leaf-level characteristics showed that seasonal changes in chlorophyll content and mesophyll structure of deciduous tree species lead to a seasonal change in leaf optical properties. The canopy reflectance spectrum of the deciduous forest also changes with season. In particular, canopy reflectance in the green region showed a unique pattern in the early growing season: green reflectance increased rapidly after leaf emergence and decreased rapidly after canopy closure. Our model simulation showed that the seasonal change in the leaf optical properties and leaf area index caused this pattern. Based on this understanding we discuss how we can gain ecophysiological information from satellite images at the landscape level. Finally, we discuss the challenges and opportunities of ecophysiological remote sensing by satellites.

scholarly journals Remote sensing of aerosol optical properties and solar heating rate by the combination of sky radiometer and lidar measurements

2017 ◽  
Author(s):  
Rei Kudo ◽  
Tomoaki Nishizawa ◽  
Toshinori Aoyagi ◽  
Yasushi Fujiyoshi ◽  
Yuji Higuchi ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Optical Properties ◽  
Heating Rate ◽  
Solar Heating ◽  
Aerosol Optical Properties ◽  
Lidar Measurements

scholarly journals Uptake of reactive nitrogen on cirrus cloud particles during INCA

2004 ◽  
Vol 31 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
H. Ziereis ◽  
A. Minikin ◽  
H. Schlager ◽  
J. F. Gayet ◽  
F. Auriol ◽  
...  
Keyword(s):  
Reactive Nitrogen ◽  
Cirrus Cloud ◽  
Cloud Particles
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