Results 31 to 40 of about 3,901 (158)

Intercomparison of retrieval algorithms for the specific surface area of snow from near-infrared satellite data in mountainous terrain, and comparison with the output of a semi-distributed snowpack model [PDF]

The Cryosphere, 2013
This study compares different methods to retrieve the specific surface area (SSA) of snow from satellite radiance measurements in mountainous terrain.
A. Mary, M. Dumont, J.-P. Dedieu, Y. Durand, P. Sirguey, H. Milhem, O. Mestre, H. S. Negi, A. A. Kokhanovsky, M. Lafaysse, S. Morin   +10 more
doaj   +1 more source

Optical mechanisms behind vitrinite reflectance suppression caused by strong anisotropy: A case study of contact metamorphic coals

Meitian dizhi yu kantan
ObjectiveFor vitrinite with weak anisotropy, which proves uniaxial and optically negative, replacing random vitrinite reflectance (Rran) with the maximum vitrinite reflectance (Rmax) allows for the accurate correction of vitrinite reflectance suppression
Yanfei AN, Shuyang HE, Kaixin CHEN, Junhan GAO   +3 more
doaj   +1 more source

Accounting for surface reflectance anisotropy in satellite retrievals of tropospheric NO₂ [PDF]

Atmospheric Measurement Techniques, 2010
Surface reflectance is a key parameter in satellite trace gas retrievals in the UV/visible range and in particular for the retrieval of nitrogen dioxide (NO2) vertical tropospheric columns (VTCs).
B. Buchmann, C. Popp, M. Sneep, K. F. Boersma, R. J. D. Spurr, D. Brunner, Y. Zhou   +6 more
doaj   +1 more source

Multiscale BRDF Modeling and Scale Effect Analysis Using UAV Multiangle Remote Sensing

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Uncrewed aerial vehicles (UAVs) are increasingly used in close-range remote sensing due to flexible multiangle observations and high spatial resolution.
Junqin Xie, Hu Zhang, Jingtian Pu, Zimeng Yan, Yongzhen Cai, Lei Cui, Hongtao Cao   +6 more
doaj   +1 more source

Temperature induced changes in the optical properties of skin in vivo

Scientific Reports, 2021
Knowledge of temperature-induced changes of skin optical properties is required for accurate dosimetry of photothermal treatments. We determined and compared in vivo optical properties of mouse ear skin at different temperatures. The diffuse reflectance,
Tyler W. Iorizzo, Peter R. Jermain, Elena Salomatina, Alona Muzikansky, Anna N. Yaroslavsky   +4 more
doaj   +1 more source

Effect of surface BRDF of various land cover types on geostationary observations of tropospheric NO₂ [PDF]

Atmospheric Measurement Techniques, 2014
We investigated the effect of surface reflectance anisotropy, bidirectional reflectance distribution function (BRDF), on satellite retrievals of tropospheric NO2.
K. Noguchi, A. Richter, V. Rozanov, A. Rozanov, J. P. Burrows, H. Irie, K. Kita   +6 more
doaj   +1 more source

A Manual Transportable Instrument Platform for Ground-Based Spectro-Directional Observations (ManTIS) and the Resultant Hyperspectral Field Goniometer System

Sensors, 2013
This article presents and technically describes a new field spectro-goniometer system for the ground-based characterization of the surface reflectance anisotropy under natural illumination conditions developed at the Alfred Wegener Institute (AWI).
Marcel Buchhorn, Reinhold Petereit, Birgit Heim   +2 more
doaj   +1 more source

A Universal BRDF Archetype Database for Normalizing Directional Reflectance to Nadir BRDF Adjusted Reflectance

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Surface reflectance varies with changes in solar and viewing angles, exhibiting distinct anisotropic reflectance characteristics, which can be characterized using the bidirectional reflectance distribution function (BRDF).
Qianrui Xi, Hu Zhang, Junqin Xie, Xiaoning Zhang, Hongtao Cao, Yan Liu, Lei Cui, Yadong Dong   +7 more
doaj   +1 more source

Retrieving tropospheric nitrogen dioxide from the Ozone Monitoring Instrument: effects of aerosols, surface reflectance anisotropy, and vertical profile of nitrogen dioxide [PDF]

Atmospheric Chemistry and Physics, 2014
Retrievals of tropospheric nitrogen dioxide (NO2) from the Ozone Monitoring Instrument (OMI) are subject to errors in the treatments of aerosols, surface reflectance anisotropy, and vertical profile of NO2.
J.-T. Lin, R. V. Martin, K. F. Boersma, M. Sneep, P. Stammes, R. Spurr, P. Wang, M. Van Roozendael, K. Clémer, H. Irie   +9 more
doaj   +1 more source

Reflection of Phase Anisotropy on Molecule

9 pages, 6 figures, 1 ...
Uchida, Yoshiaki, Watanabe, Go
openaire   +2 more sources