Results 1 to 10 of about 69,694 (149)

Experimental Investigation of Ground Radiation on Dielectric and Brightness Temperature of Soil Moisture and Soil Salinity [PDF]

open access: yesSensors, 2020
Soil moisture and salinity are crucial parameters of the Earth’s ecosystem; how to understand the radiation properties of them is of great significance for remote sensing monitoring.
Weizhen Wang   +5 more
doaj   +2 more sources

Conjoint Inversion of Snow Temperature Profiles from Microwave and Infrared Brightness Temperature in Antarctica

open access: yesRemote Sensing, 2023
The snow temperature above the ice sheet is one of the basic characteristic parameters of the ice sheet, which plays an important role in the study of the global climate.
Zhiwei Chen   +4 more
doaj   +1 more source

Variation of Thermal Infrared Brightness Temperature Anomalies in the Madoi Earthquake and Associated Earthquakes in the Qinghai-Tibetan Plateau (China)

open access: yesFrontiers in Earth Science, 2022
We processed MODIS data received from ground receiving stations into the spatial range of the Qinghai-Tibetan Plateau (China) and the eastern margin of the plateau, and then 283 K was set as the threshold value to remove the area covered by clouds.
Xing Yang   +8 more
doaj   +1 more source

Detection of Thermal Changes Related to the 2011 Shinmoedake Volcano Activity, Japan: Spatiotemporal Variation of Singularity of MODIS Data after Discriminating False Changes Due to Cloud

open access: yesRemote Sensing, 2020
We proposed a cloud discrimination method applicable in Japan using MODIS nighttime data, monitored the singularity of the spatiotemporal correlation of surface temperature anomalies and investigated the possibility of detecting and monitoring lava ...
Rika Tsutsumi   +3 more
doaj   +1 more source

A Soil Moisture Retrieval Method for Reducing Topographic Effect: A Case Study on the Qinghai–Tibetan Plateau With SMOS Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The topography can be very important for passive microwave remote sensing of soil moisture due to its complex influence on the emitted brightness temperature observed by a satellite microwave radiometer.
Yu Bai   +8 more
doaj   +1 more source

Brightness temperature for radio sources [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
AbstractIn this work, using the database of the university of Michigan Radio Astronomy Observatory (UMRAO), we determined the brightness temperatures, TB for a sample of 167 radio sources. The value of TB is in a range of log TB(K) = 10.46 to 20.08, which suggested that the boosting factors are in a range of δ = 0.41 to 41.26.
J. H. Fan   +5 more
openaire   +1 more source

Development and Evaluation of a New Method for AMSU-A Cloud Detection over Land

open access: yesRemote Sensing, 2021
Satellite data are the main source of information for operational data assimilation systems, and Advanced Microwave Sounding Unit-A (AMSU-A) data are one of the types of satellite data that contribute most to the reduction of numerical forecast errors ...
Zhiwen Wu, Juan Li, Zhengkun Qin
doaj   +1 more source

The SSR Brightness Temperature Increment Model Based on a Deep Neural Network

open access: yesRemote Sensing, 2023
The SSS (sea surface salinity) is an important factor affecting global climate changes, sea dynamic environments, global water cycles, marine ecological environments, and ocean carbon cycles.
Zhongkai Wen   +9 more
doaj   +1 more source

TITAN'S SURFACE BRIGHTNESS TEMPERATURES

open access: yesThe Astrophysical Journal, 2009
Radiance from the surface of Titan can be detected from space through a spectral window of low opacity in the thermal infrared at 19 μm (530 cm–1). By combining Composite Infrared Spectrometer observations from Cassini's first four years, we have mapped the latitude distribution of zonally averaged surface brightness temperatures.
Jennings, Donald E.   +19 more
openaire   +3 more sources

Limiting Brightness Temperature for Synchrotron Sources [PDF]

open access: yesInternational Astronomical Union Colloquium, 1998
AbstractThe maximum brightness temperature limit for synchrotron sources derived from inverse Compton catastrophe is usually taken to be 1012 K. Readhead has argued in 1994 that the equipartition brightness temperature may be a better estimate for Tb,lim. It provides a value of 5 × 1010 K.
A. Lähteenmäki, E. Valtaoja
openaire   +1 more source

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