Results 81 to 90 of about 124,376 (308)

Demonstration of a Combined Active/Passive L-Band Microwave Remote Sensing Airborne Instrument

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The passive and active L-band system (PALS) is an airborne microwave instrument suite that combines a separate radar and radiometer airborne instrument with a common antenna.
Mehmet Ogut   +7 more
doaj   +1 more source

Climate change and underwater light: Large‐scale changes in ultraviolet radiation transparency associated with intensifying wet–dry cycles

open access: yesLimnology and Oceanography Letters, EarlyView.
Abstract Ultraviolet radiation (UV) is the most energetic waveband of incident solar radiation and has wide‐ranging effects in the aquatic environment. Our analysis of an 18‐year record of underwater irradiance and related limnological variables in sub‐alpine, ultra‐oligotrophic Lake Tahoe revealed orders of magnitude changes in UV transparency ...
Shohei Watanabe   +4 more
wiley   +1 more source

A Combined IR-GPS Satellite Analysis for Potential Applications in Detecting and Predicting Lightning Activity

open access: yesRemote Sensing, 2020
Continuous estimates of the vertical integrated precipitable water vapor content from the tropospheric delay of the signal received by the antennas of the global positioning system (GPS) are used in this paper, in conjunction with the measurements of the
Leo Pio D’Adderio   +4 more
doaj   +1 more source

Confirming existing parameterizations for methane gas transfer velocity in lakes based on direct and high‐frequent methods

open access: yesLimnology and Oceanography Letters, EarlyView.
Abstract Freshwater systems are important sources of atmospheric methane (CH4). However, estimated emissions are associated with high uncertainties due to limited knowledge about the temporal variability in emissions and their associated controls, such as air–water gas transfer velocity.
Leonie Esters   +7 more
wiley   +1 more source

Real‐time quality assessment for Biogeochemical Argo radiometric profiles

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract An ever‐increasing number of Biogeochemical (BGC) Argo floats equipped with radiometric sensors have been deployed across the World Ocean. To date, more than 50,000 vertical profiles from 0 to at least 250 dbar of photosynthetically available radiation and downwelling irradiance at 3, narrow wavelengths have been acquired.
Giovanni La Forgia, Emanuele Organelli
wiley   +1 more source

Sequential Dual‐Curing via Michael Addition and Free Radical Polymerization for Wood Surface Densification

open access: yesPolymer Engineering &Science, EarlyView.
Densification and curing process using sequential Michael addition reaction. ABSTRACT The application of sequential dual‐curing systems involving Michael addition and free radical polymerization has shown promise for enhancing polymeric networks' thermal and mechanical properties.
Vahideh Akbari   +3 more
wiley   +1 more source

Design of an atmospheric sounding radiometer for the GOES meteorological satellite system [PDF]

open access: yes, 1980
An advanced version of the visible infrared spin scan radiometer onboard U.S. geostationary operational environmental satellites was developed to add a vertical dimension to the instrument's infrared atmospheric images.
Jensen, R. G.
core   +1 more source

Analysis of the wind response to resolved versus parametrized turbulent orographic drag in high‐resolution simulations

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
This study analyzes the impact of orographic drag on the lower atmosphere over moderately complex terrain using high‐resolution ICON simulations. Numerical simulations explore the effects of parametrizations over moderately complex terrain near the Perdigao experiment site and the Serra da Estrela mountain range by comparing km‐ and 100‐m‐scale ...
Julian Quimbayo‐Duarte   +3 more
wiley   +1 more source

In-orbit straylight characterization and correction of optical radiometer using the moon image

open access: yesMechanical Engineering Journal, 2019
The moon images have been in recent years employed as a referential light source for in-orbit radiometric characterization of on-board radiometer in spacecraft.
Shigemasa ANDO, Kazuhiro TANAKA
doaj   +1 more source

Black body cavity radiometer Patent [PDF]

open access: yes, 1971
Black body radiometer having isothermally surrounded cavity for ultraviolet, visible, and infrared ...
Kendall, J. M., Sr.
core   +1 more source

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