The Experts below are selected from a list of 117 Experts worldwide ranked by ideXlab platform
David J. Smith - One of the best experts on this subject based on the ideXlab platform.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Noelle Bryan, Alexa Mcintyre, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm^−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, Noelle C. Bryan, Alexa B. R. Mcintyre, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
Tristan A. Caro - One of the best experts on this subject based on the ideXlab platform.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Noelle Bryan, Alexa Mcintyre, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm^−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, Noelle C. Bryan, Alexa B. R. Mcintyre, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
Arnab Bhattacharya - One of the best experts on this subject based on the ideXlab platform.
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Development of instruments for space exploration using Meteorological Balloons
Journal of Astronomical Telescopes Instruments and Systems, 2019Co-Authors: Debashis Bhowmick, Ritabrata Sarkar, Sandip K. Chakrabarti, Arnab BhattacharyaAbstract:Indian Centre for Space Physics is engaged in studying terrestrial and extra-terrestrial high energy phenomena from Meteorological Balloon borne platforms. A complete payload system with such Balloons is at the most about five kilograms of weight. One has to adopt innovative and optimal design for various components of the experiment, so that the data can be procured at decent heights of ~ 35-42 km and at the same time, some scientific goals are achieved. In this paper, we mainly describe the instruments in detail and present their test and calibration results. We discuss, how we implemented and tested three major instruments, namely, a Geiger-Muller counter, a single crystal scintillator detector and a phoswich type scintillator detector for our missions. We also present some flight data of a few missions to demonstrate the capability of such experiments.
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Detection of Crab radiation with a Meteorological Balloon borne phoswich detector
Experimental Astronomy, 2019Co-Authors: Ritabrata Sarkar, Sandip K. Chakrabarti, Debashis Bhowmick, Arnab BhattacharyaAbstract:We use existing light weight Balloon facility of Indian Centre for Space Physics to detect the X-ray radiation from Crab pulsar with a phoswich detector. We present the design considerations and characterization of the detector used for this purpose. We model the background radiation in the detector environment at various altitudes and use this in spectral analysis. The background radiation level and limitations on the detector allowed us to calculate minimum detection limit for extrasolar radiation sources with our set up.
Matthew Freeland - One of the best experts on this subject based on the ideXlab platform.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Noelle Bryan, Alexa Mcintyre, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm^−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, Noelle C. Bryan, Alexa B. R. Mcintyre, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
Patrick Nicoll - One of the best experts on this subject based on the ideXlab platform.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Noelle Bryan, Alexa Mcintyre, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm^−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.
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Ultraviolet light measurements (280–400 nm) acquired from stratospheric Balloon flight to assess influence on bioaerosols
Aerobiologia, 2019Co-Authors: Tristan A. Caro, Matthew Wendeln, Matthew Freeland, Patrick Nicoll, Sasha Madronich, Samantha M. Waters, Noelle C. Bryan, Alexa B. R. Mcintyre, David J. SmithAbstract:Viable microorganisms collected from the Earth’s upper atmosphere are mysterious considering the intensely biocidal ultraviolet (UV) light conditions dominating rarefied air. Historically, most investigations examining the relationship between bioaerosols and UV conditions in the upper atmosphere have relied upon model-generated data. To address the shortage of in situ UV measurements in the upper troposphere and lower/middle stratosphere, we flew a Meteorological Balloon equipped with a UV radiometer and other core environmental sensors. The Balloon payload launched from Illinois, USA, on October 6, 2018, and acquired UVA (315–400 nm) + UVB (280–315 nm) measurements for ~ 2 h up to 30.9 km. Above the atmospheric boundary layer, UVA + UVB values registered around 6 mW cm−2, results that were largely consistent with Tropospheric Ultraviolet–Visible model predictions. Performed in a low-cost, reusable manner with commercially available instruments, we show that reliable UV flux data can be acquired with Meteorological Balloon payload systems. This short communication provides relevant UVA + UVB results for aerobiology and astrobiology studies evaluating the survivability of microorganisms in the upper atmosphere.