Results 31 to 40 of about 4,121,317 (291)

Passive Microwave Melt Onset Retrieval Based on a Variable Threshold: Assessment in the Canadian Arctic Archipelago

open access: yesRemote Sensing, 2019
The Canadian Arctic Archipelago (CAA) presents unique challenges to the determination of melt onset (MO) using remote sensing data. High spatial resolution data is required to discern melt onset among the islands and narrow waterways of the region ...
Stephen Marshall   +2 more
doaj   +1 more source

Atmospheric temperature, water vapour and liquid water path from two microwave radiometers during MOSAiC

open access: yesScientific Data, 2022
Measurement(s) radio wave radiation • far-infrared radiation Technology Type(s) microwave radiometer Factor Type(s) brightness temperature Sample Characteristic - Environment planetary atmosphere Sample Characteristic - Location Arctic ...
Andreas Walbröl   +9 more
doaj   +1 more source

An Empirical Model for Correction of Topographic Effect in Microwave Radiation of Mountainous Area

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The topographic effect is one of the essential factors affecting microwave radiation in mountainous regions. This effect's correction can improve the inversion accuracy of key surface parameters.
Shaojie Zhao   +5 more
doaj   +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

Research on neural network training retrieval based on microwave radiometer observed brightness temperature data set

open access: yes暴雨灾害, 2022
In order to improve the accuracy of the ground-based microwave radiometer retrievals of the atmospheric temperature and humidity profile, and enhance the observation performance of locally deployed devices, this study implements two kinds of neural ...
Jiebo YANG   +8 more
doaj   +1 more source

A neurodynamical model of brightness induction in V1 [PDF]

open access: yes, 2013
Brightness induction is the modulation of the perceived intensity of an area by the luminance of surrounding areas. Recent neurophysiological evidence suggests that brightness information might be explicitly represented in V1, in contrast to the more ...
Otazu, Xavier   +12 more
core   +2 more sources

Uncertainty in simulated brightness temperature due to sensitivity to atmospheric gas spectroscopic parameters from the centimeter- to submillimeter-wave range [PDF]

open access: yesAtmospheric Chemistry and Physics
Atmospheric radiative transfer models are extensively used in Earth observation to simulate radiative processes occurring in the atmosphere and to provide both upwelling and downwelling synthetic brightness temperatures for ground-based, airborne, and ...
D. Gallucci   +9 more
doaj   +1 more source

Microstructure representation of snow in coupled snowpack and microwave emission models [PDF]

open access: yesThe Cryosphere, 2017
This is the first study to encompass a wide range of coupled snow evolution and microwave emission models in a common modelling framework in order to generalise the link between snowpack microstructure predicted by the snow evolution models and ...
M. Sandells   +5 more
doaj   +1 more source

Modelling L-band microwave brightness temperature time series for firn aquifers [PDF]

open access: yesThe Cryosphere
Firn aquifers are important in polar ice sheet hydrology and the associated mass and energy transport processes. Although the firn aquifer extent has been mapped using passive microwave satellite observations, models for predicting the L-band brightness ...
H. Xu   +4 more
doaj   +1 more source

Tuning of a superconducting microwave resonator at 77 K using an integrated micromachined silicon vertical actuator [PDF]

open access: yes, 2010
A silicon micromachined actuator is used to tune a high temperature superconducting microwave resonator. The superconducting resonator is only 1.24 mm x 0.66 mm and demonstrates a Q of up to 1078 at 6.3 GHz and at 77 K.
Y Wang   +14 more
core   +1 more source

Home - About - Disclaimer - Privacy