Results 31 to 40 of about 317,264 (286)

The importance of surface reflectance anisotropy for cloud and NO₂ retrievals from GOME-2 and OMI [PDF]

Atmospheric Measurement Techniques, 2018
The angular distribution of the light reflected by the Earth's surface influences top-of-atmosphere (TOA) reflectance values. This surface reflectance anisotropy has implications for UV/Vis satellite retrievals of albedo, clouds, and trace gases such ...
A. Lorente, K. F. Boersma, K. F. Boersma, P. Stammes, L. G. Tilstra, A. Richter, H. Yu, S. Kharbouche, J.-P. Muller   +8 more
doaj   +1 more source

Evaluation of BRDF Archetypes for Representing Surface Reflectance Anisotropy Using MODIS BRDF Data

Remote Sensing, 2015
Bidirectional reflectance distribution function (BRDF) archetypes extracted from the Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo product over the global Earth Observing System Land Validation Core Sites can be used to simplify BRDF
Hu Zhang, Ziti Jiao, Yadong Dong, Xiaowen Li   +3 more
doaj   +1 more source

Effects of Atmospheric, Topographic, and BRDF Correction on Imaging Spectroscopy-Derived Data Products

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Surface reflectance is an important data product in imaging spectroscopy for obtaining surface information. The complex retrieval of surface reflectance, however, critically relies on accurate knowledge of atmospheric absorption and scattering, and the ...
Marius Vogtli, Daniel Schlapfer, Meredith C. Schuman, Michael E. Schaepman, Mathias Kneubuhler, Alexander Damm   +5 more
doaj   +1 more source

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

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

White Matter Microstructural Abnormalities in Neonatal Onset Genetic Epilepsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Recent evidence indicates that epilepsy is associated with abnormal white matter. If seizures alter white matter, then the impact upon network function, epileptogenesis, and cognition could be pronounced in neonates undergoing rapid developmental myelination. Neonates with epilepsy due to nonstructural genetic causes provide a unique
Amanda G. Sandoval Karamian, Tianjia Zhu, Hao Huang, Shavonne L. Massey, Mark P. Fitzgerald, Darshana Parikh, Arastoo Vossough, Ingo Helbig, Nicholas S. Abend   +8 more
wiley   +1 more source

An approach for reflectance anisotropy retrieval from UAV-based oblique photogrammetry hyperspectral imagery

International Journal of Applied Earth Observations and Geoinformation, 2021
Reflectance Anisotropy (RA) contains crucial information about the optical behavior and structure of ground objects and is typically described by the Bidirectional Reflectance Distribution Function (BRDF).
Lei Deng, Yong Chen, Yun Zhao, Lin Zhu, Hui-Li Gong, Li-Jie Guo, Han-Yue Zou   +6 more
doaj   +1 more source