Results 41 to 50 of about 24,045 (203)

Laboratory Intercomparison of Radiometers Used for Satellite Validation in the 400–900 nm Range

open access: yesRemote Sensing, 2019
An intercomparison of radiance and irradiance ocean color radiometers (The Second Laboratory Comparison Exercise—LCE-2) was organized within the frame of the European Space Agency funded project Fiducial Reference Measurements for Satellite Ocean ...
Viktor Vabson   +23 more
doaj   +1 more source

A New Method for Hail Detection from the GPM Constellation: A Prospect for a Global Hailstorm Climatology

open access: yesRemote Sensing, 2020
A new method for detecting hailstorms by using all the MHS-like (MHS, Microwave Humidity Sounder) satellite radiometers currently in orbit is presented.
Sante Laviola   +4 more
doaj   +1 more source

Tropical Cyclone Winds from WindSat, AMSR2, and SMAP: Comparison with the HWRF Model

open access: yesRemote Sensing, 2021
A new data set of tropical cyclone winds (‘TC-winds’) through rain as observed by the WindSat and AMSR2 microwave radiometers has been developed by making use of a linear combination of C- and X-band frequency channels.
Andrew Manaster   +2 more
doaj   +1 more source

Enhancing Meteor Observations with Photodiode Detectors

open access: yesApplied Sciences
This article introduces an innovative meteor detection system that integrates high-speed photodiode detectors with traditional camera-based systems.
Adam Popowicz   +3 more
doaj   +1 more source

Effect of Emitted Wavelength and Light Guide Type on Irradiance Discrepancies in Hand-Held Dental Curing Radiometers

open access: yesThe Scientific World Journal, 2013
The purpose of this study was to determine any discrepancies in the outputs of five commercial dental radiometers and also to evaluate the accuracy of these devices using a laboratory-grade spectroradiometer.
Atsushi Kameyama   +3 more
doaj   +1 more source

Quality control of instruments for measuring the characteristics of bactericidal UV radiation

open access: yesРоссийский технологический журнал
Objectives. Quality control of instruments for measuring bactericidal irradiance of ultraviolet (UV) radiation is based on studying the main metrological characteristics.
O. A. Minaeva   +5 more
doaj   +1 more source

A low CMB variance in the WMAP data

open access: yes, 2008
We have estimated the CMB variance from the three-year WMAP data, finding a value which is significantly lower than the one expected from Gaussian simulations using the WMAP best-fit cosmological model, at a significance level of 98.7 per cent.
A. N. Lasenby   +9 more
core   +1 more source

Observed Mesoscale Wind Response to Sea Surface Temperature Patterns: Modulation by Large-Scale Physical Conditions

open access: yesRemote Sensing
Sea surface temperature (SST) gradients modulate surface wind variability at the mesoscale O(100 km), with relevant impacts on surface fluxes, rainfall, cloudiness and storms.
Lorenzo F. Davoli   +2 more
doaj   +1 more source

Hailstorm Detection by Satellite Microwave Radiometers

open access: yesRemote Sensing, 2020
Passive microwave measurements from satellites have been used to identify the signature of hail in intense thunderstorms. The scattering signal of hailstones is typically observed as a strong depression of upwelling brightness temperatures from the cloud
Sante Laviola   +3 more
doaj   +1 more source

Using Hyperspectral and Multispectral Indices to Detect Water Stress for an Urban Turfgrass System

open access: yesAgronomy, 2019
Spectral reflectance measurements collected from hyperspectral and multispectral radiometers have the potential to be a management tool for detecting water and nutrient stress in turfgrass.
Mike J. Badzmierowski   +2 more
doaj   +1 more source

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