Results 41 to 50 of about 15,539 (217)

Rigorous electromagnetic calculations in radiometry [PDF]

, 2008
Until recently, accurate estimates in radiometry using geometrical optics were justified because of the use of optical frequencies and large apertures.
Torok, Peter, Gogornas, Alexandros, McCall, Martin   +2 more
core   +2 more sources

Absorption‐Based Wavelength‐Resolved Hyperspectral Primary Productivity Algorithm for the Northern Gulf of Mexico

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract The northern Gulf of Mexico (nGOM) is a region of high biological productivity largely influenced by the nutrient input from the Mississippi and Atchafalaya rivers. Prior studies utilizing bio‐optical algorithms to estimate primary production (PP) in this region have generally employed wavelength‐integrated models (WIM) involving attenuation ...
Most Israt Jahan Mili, Steven E. Lohrenz
wiley   +1 more source

Assessment of Trace Element Daily Intake Based on Consumption Rate of Foodstuffs in Bandung City

Atom Indonesia, 2012
Trace elements are required by human body and have a variety role in biochemical functions mostly as catalyst for enzymatic activity in human body. Some trace elements are essential since they are inadequately or not synthesized by human body.
E. Damastuti, W.Y.N. Syahfitri, M. Santoso, D.D. Lestiani   +3 more
doaj  

Ferric Chloride: The Venusian Unknown UV Absorber?

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Near‐ultraviolet imaging of the planet Venus reveals inhomogeneous absorption features in the otherwise bright clouds. This absorption has been studied for nearly 100 years, but identification of the near‐UV absorber remains one of the largest open questions in Venusian research.
Joanna V. Egan, Wuhu Feng, Alexander D. James, James Manners, Daniel R. Marsh, Sébastien Lebonnois, Franck Lefèvre, Aurélien Stolzenbach, John M. C. Plane   +8 more
wiley   +1 more source

CbPM Estimates of Net Primary Production in the North Atlantic From Profiling Floats and Satellites Diverge Seasonally Due To Fluorescence and Vertical Extrapolation Effects

Global Biogeochemical Cycles, Volume 40, Issue 8, August 2026.
Abstract Marine net primary production (NPP), defined as the difference between gross production and phytoplankton respiration, is often estimated using algorithms applied to remote sensing data. While assumptions are needed to extend surface satellite observations through depth, some NPP algorithms, like the Carbon‐based Productivity Model (CbPM ...
Nina Buzby, Andrea J. Fassbender, Alison R. Gray, Marin Cornec, Jacki Long, Ellen Park   +5 more
wiley   +1 more source

Peculiar Magnetosphere‐Atmosphere Coupling and Its Impacts Over the South American Magnetic Anomaly Region

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The auroral‐like sporadic E‐layer is typically observed at altitudes between 100 and 150 km within the South American Magnetic Anomaly region. However, the occurrence of an unusual layer event detected above this altitude range on 18 July 2017 has raised intriguing questions regarding the physical processes responsible for the substantial ...
Lígia A. Da Silva, Hui Li, Laysa C. A. Resende, Vânia F. Andrioli, Angela M. Santos, Juliano Moro, Paulo R. Jauer, Luis Eduardo Vieira, Lívia R. Alves, José Paulo Marchezi, Jiankui Shi, Jiyao Xu, Paulo P. Batista, Jose V. Bageston, Yajun Zhu, Clezio M. Denardini, Chi Wang, Ezequiel Echer, Guotao Yang, Alexandre A. Pimenta, Joaquim R. Costa, Zhengkuan Liu   +21 more
wiley   +1 more source

An Overall Assessment of JPSS-2 VIIRS Radiometric Performance Based on Pre-Launch Testing

Remote Sensing, 2018
The Visible Infrared Imaging Radiometer Suite (VIIRS) on-board the second Joint Polar Satellite System (JPSS) completed its sensor level testing in February 2018.
Hassan Oudrari, Jeff McIntire, Xiaoxiong Xiong, James Butler, Qiang Ji, Thomas Schwarting, Amit Angal   +6 more
doaj   +1 more source

Enhanced Retrieval of Spring Snow Depth Over Pan‐Arctic Sea Ice From AMSR2 Observations for 2013–2023 Using Multi‐Model Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Snow on sea ice modulates the Earth's radiation budget and sea ice mass balance, yet satellite retrievals of Arctic snow depth remain subject to substantial algorithmic uncertainty. We develop a multi‐model machine learning (ML) framework for retrieving spring snow depth over Arctic sea ice from Advanced Microwave Scanning Radiometer 2 (AMSR2).
Yi Zhou, Chentong Zhang, Alek Petty, Xianwei Wang, Ruibo Lei, Wenxuan Liu, Yu Zhang   +6 more
wiley   +1 more source

Spatio-Temporal Assessment of Tuz Gölü, Turkey as a Potential Radiometric Vicarious Calibration Site

Remote Sensing, 2014
The paper provides an assessment of Tuz Gölü, a site in Turkey proposed for the radiometric vicarious calibration of satellite sensors, in terms of its spatial homogeneity as expressed in visible and near-infrared (VNIR) wavelengths over a 25-year period
Vincent O. Odongo, Nicholas A. S. Hamm, Edward J. Milton   +2 more
doaj   +1 more source

The Flexible Microwave Payload-2: A SDR-Based GNSS-Reflectometer and L-Band Radiometer for CubeSats

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
This article presents the FMPL-2 on board the FSSCat mission, the 2017 ESA Small Sentinel Satellite Challenge and overall Copernicus Masters Competition winner.
Joan Francesc Munoz-Martin, Lara Fernandez Capon, Joan Adria Ruiz-de-Azua, Adriano Camps   +3 more
doaj   +1 more source