Results 51 to 60 of about 69,714 (169)

Far-Infrared Brightness Temperatures of the Planets

open access: yesThe Astrophysical Journal, 1972
An airborne telescope operating in an altitude range from 45,000 to 50,000 feet together with a low-temperature germanium bolometer and six cooled filters were used in an investigation of the temperatures of the planets. The measurements conducted provide a basis for absolute calibration in the far infrared, confirm the high effective temperature and ...
K. R. Armstrong   +2 more
openaire   +1 more source

Investigating Temporal and Spatial Variation of Jupiter’s Atmosphere with Radio Observations

open access: yesThe Planetary Science Journal
We study the spatial and temporal variability in Jupiter's atmosphere by comparing longitude-resolved brightness temperature maps from the Very Large Array radio observatory and NASA's Juno spacecraft Microwave Radiometer taken between 2013 and 2018 ...
Joanna Hardesty   +2 more
doaj   +1 more source

MATLAB-empowered brightness defect prediction system in pulp processing bleaching stage: An empirical modelling approach

open access: yesCase Studies in Chemical and Environmental Engineering
Pulp quality significantly affects paper products, necessitating a balance between brightness, strength, and environmental sustainability. The bleaching process, which includes delignification and brightening stages, is crucial for achieving high pulp ...
Michael   +7 more
doaj   +1 more source

Deep learning estimation of northern hemisphere soil freeze-thaw dynamics using satellite multi-frequency microwave brightness temperature observations. [PDF]

open access: yesFront Big Data, 2023
Donahue K   +8 more
europepmc   +1 more source

A New Antenna Pattern Correction Method for a Cross-Track Scanning Microwave Sounder with Full-Circular Sampling

open access: yesRemote Sensing
The measured antenna temperature of microwave radiometers differs from the true brightness temperature due to antenna pattern effects. Corrections for the antenna pattern effects constitutes an essential component of microwave radiometer calibration. The
Guohong Fan, Zhenzhan Wang
doaj   +1 more source

Forest fire detection based on temporal and spatial correction of background brightness temperature using GF-4 PMI data [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Forest fires threaten human life and property, making timely and accurate fire monitoring essential for fire prevention and control efforts. Satellite remote sensing meets the requirements of large-scale, high-frequency observations for forest fire ...
P. Cheng   +6 more
doaj   +1 more source

Impact of Deep Soil Layer on Terrestrial Microwave Emission for a Bare Agricultural Field [PDF]

open access: yesRadioengineering, 2017
In this study, we investigated the deep (semi-infinite) soil contribution to the brightness temperature at 1.4 GHz calculated through a modified incoherent radiative transfer model.
C. Dogusgen (Erbas)
doaj  

Brightness Temperature Sensitivity to Whitecap Fraction at Millimeter Wavelengths

open access: yesRemote Sensing, 2019
Accurate representation of the ocean-atmosphere coupling in weather, wave and climate models requires reliable estimates of air-sea surface fluxes of momentum, heat and mass.
Michael H. Bettenhausen   +1 more
doaj   +1 more source

An RFI-suppressed SMOS L-band multi-angular brightness temperature dataset spanning over a decade (since 2010). [PDF]

open access: yesSci Data, 2023
Peng Z   +6 more
europepmc   +1 more source

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