Shannon Brown
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View article: Retrieval of atmospheric water vapor and temperature profiles over Antarctica from satellite microwave observations using an iterative approach
Retrieval of atmospheric water vapor and temperature profiles over Antarctica from satellite microwave observations using an iterative approach Open
Retrieving atmospheric water vapor and temperature profiles over land using microwave radiometry is challenging due to uncertainties in estimating surface emissions. To address this, we developed an approach that couples the atmospheric re…
View article: Mapping menstrual health and hygiene progress in US schools: a systematic policy review and comparison across states
Mapping menstrual health and hygiene progress in US schools: a systematic policy review and comparison across states Open
Introduction Menstrual health and hygiene (MHH) policy initiatives have emerged as a key strategy to improve adolescent MHH, particularly through the expansion of state-level legislation aimed at increasing access to menstrual materials in…
View article: Juno Microwave Radiometer Observations into the Subsurface of the Ice Shell of Ganymede
Juno Microwave Radiometer Observations into the Subsurface of the Ice Shell of Ganymede Open
During the Juno extended mission, the spacecraft passed Jupiter’s Galilean moon Ganymede. The flyby of Ganymede was in June 2021, at a distance of ~1000 km, providing an opportunity to probe Ganymede’s icy subsurface at multiple microwave …
View article: An empirical three-layer fluid dynamical model for a combined JunoCam and MWR snapshot of Jupiter's north polar region
An empirical three-layer fluid dynamical model for a combined JunoCam and MWR snapshot of Jupiter's north polar region Open
JunoCam images show a stable and approximately irrotational north polar cyclone, surrounded by eight circumpolar cyclones (CPCs) (Figure 1). The CPCs have been essentially stable over almost a decade since their discovery in 2016. They sho…
View article: Juno Microwave Radiometer Observations Of Europa’s Sub-Surface Ice
Juno Microwave Radiometer Observations Of Europa’s Sub-Surface Ice Open
When the Juno spacecraft flew past Europa in September of 2022, the Microwave Radiometer (MWR) collected a few minutes of data from within 1000 km of the surface. MWR’s six channels range in frequency from 0.6 GHz to 22 GHz, and collected …
View article: An ecologic analysis on the associations between child maltreatment and COVID-19 vaccination, incidence and mortality: A Georgia statewide analysis
An ecologic analysis on the associations between child maltreatment and COVID-19 vaccination, incidence and mortality: A Georgia statewide analysis Open
Background: Child maltreatment (CM) is a significant public health problem. The COVID-19 pandemic exacerbated risk contexts for families with CM. While preliminary evidence shows increased vaccine hesitancy among parents at high-risk for C…
View article: Migratory and psychosocial predictors of child emotional and physical health among a sample of refugee mothers
Migratory and psychosocial predictors of child emotional and physical health among a sample of refugee mothers Open
Background: Adverse childhood experiences are strongly related to poor health outcomes. Migratory adversities have not been incorporated into the conceptualization of childhood adversities, but are common among displaced populations, and m…
View article: A Sparse Synthetic Aperture Radiometer Constellation Concept for Remote Sensing of Antarctic Ice Sheet Temperature
A Sparse Synthetic Aperture Radiometer Constellation Concept for Remote Sensing of Antarctic Ice Sheet Temperature Open
We present a concept for UHF/L-band (0.5–2 GHz) remote sensing of Antarctic ice sheet internal temperature using a highly sparse synthetic aperture radiometer constellation. This concept leverages the relative stability of ice sheet therma…
View article: Initial On-Orbit Performance Assessments of the Compact Ocean Wind Vector Radiometer
Initial On-Orbit Performance Assessments of the Compact Ocean Wind Vector Radiometer Open
The compact ocean wind vector radiometer (COWVR) is the first space-based radiometer to utilize electronic polarization basis rotation to measure a swath of polarimetric brightness temperatures without the need to scan the receiver electro…
View article: Unexpected Results from Microwave Sounding of Jupiter’s North Polar Cyclones
Unexpected Results from Microwave Sounding of Jupiter’s North Polar Cyclones Open
IntroductionThis is a preliminary report on measurements by Juno’s Microwave Radiometer (MWR) of cyclonic vortices in Jupiter’s north polar region. Juno discovered cyclones close to both rotational poles, surrounded by constell…
View article: Juno Microwave Radiometer Observations into the Subsurface of the Ice Shells of Io, Europa and Ganymede
Juno Microwave Radiometer Observations into the Subsurface of the Ice Shells of Io, Europa and Ganymede Open
During the Juno extended mission, the spacecraft passed Jupiter’s Galilean moons, Ganymede, and Europa, and then Io respectively. The flyby of Ganymede was in June 2021, at a distance of ~1000 km, and in September 2022, the spa…
View article: The Radio and Microwave Sky as Seen by Juno on its Mission to Jupiter
The Radio and Microwave Sky as Seen by Juno on its Mission to Jupiter Open
We present six nearly full-sky maps made from data taken by radiometers on the Juno satellite during its 5-year flight to Jupiter. The maps represent integrated emission over $\sim 4\%$ passbands spaced approximately in octaves between 600…
View article: Observations of Io with the Juno Microwave Radiometer:  First Results and Implications for Global Heat Flow
Observations of Io with the Juno Microwave Radiometer:  First Results and Implications for Global Heat Flow Open
The NASA Juno mission performed two close fly-bys of Jupiter’s moon Io on December 30, 2023 and February 3, 2024. Juno carries a 6-channel microwave radiometer (MWR) operating between 0.6-22 GHz. The first fly-by observed Io’s …
View article: Improved Revisit Times of Microwave Observations of Precipitation: Recent Scientific Results from the Temporal Experiment for Storms and Tropical Systems (TEMPEST) Missions
Improved Revisit Times of Microwave Observations of Precipitation: Recent Scientific Results from the Temporal Experiment for Storms and Tropical Systems (TEMPEST) Missions Open
Small satellite constellations provide the potential to improve spatiotemporal resolution of microwave observations of precipitation from low-Earth orbit. Shorter revisit times are essential to improve understanding of the developmen…
View article: Atmospheric boundary layer sensing using ultra-wideband photonic microwave spectrometer
Atmospheric boundary layer sensing using ultra-wideband photonic microwave spectrometer Open
The Atmospheric Boundary Layer (ABL) is the portion of the troposphere that is directly influenced by the Earth’s surface and responds to combined action of mechanical and thermal forcing. Most of the energy exchange with respect to …
View article: Juno Microwave Radiometer Observations of Europa’s Subsurface Ice Shell
Juno Microwave Radiometer Observations of Europa’s Subsurface Ice Shell Open
Juno flew less than 360 km from the surface of Jupiter’s moon Europa on 29 September, 2022, and mapped part of the ice shell with the Microwave Radiometer (MWR) at frequencies of 0.6, 1.2, 2.5, 4.8, 9.6, and 22 GHz. The pa…
View article: Editorial: Technology innovations for violence prevention, mental wellness and resilience among youth
Editorial: Technology innovations for violence prevention, mental wellness and resilience among youth Open
Editorial: Technology innovations for violence prevention, mental wellness and resilience among youth
View article: Vientos—A New Satellite Mission Concept for 3D Wind Measurements by Combining Passive Water Vapor Sounders with Doppler Wind Lidar
Vientos—A New Satellite Mission Concept for 3D Wind Measurements by Combining Passive Water Vapor Sounders with Doppler Wind Lidar Open
It is challenging to accurately characterize the three-dimensional distribution of horizontal wind vectors (known as 3D winds). Feature-matching satellite cloud top or water vapor fields have been used for decades to retrieve atmospheric m…
View article: Ultra-Wideband RF-Photonics Technology for Microwave Spectrometry
Ultra-Wideband RF-Photonics Technology for Microwave Spectrometry Open
We describe an RF-photonic system architecture to measure microwave spectrum over a wide bandwidth with high resolution. The approach relies on the up-conversion of the electronic signal to the optical domain using a high-speed electro-opt…
View article: The Microwave Temperature and Humidity Profiler: Description and Preliminary Results
The Microwave Temperature and Humidity Profiler: Description and Preliminary Results Open
This manuscript presents the Microwave Temperature and Humidity Profiler (MTHP), a dual-band spectroradiometer designed for measuring multi-incidence angle temperature and humidity atmospheric profiles from an aircraft platform. The MTHP b…
View article: Synthetic Observations of the Planetary Boundary Layer from Space: A Retrieval Observing System Simulation Experiment Framework
Synthetic Observations of the Planetary Boundary Layer from Space: A Retrieval Observing System Simulation Experiment Framework Open
To address critical gaps identified by the National Academies of Sciences, Engineering, and Medicine in the current Earth system observation strategy, the 2017–27 Decadal Survey for Earth Science and Applications from Space recommended inc…
View article: Use of technology in evidence-based programs for child maltreatment and its impact on parent and child outcomes
Use of technology in evidence-based programs for child maltreatment and its impact on parent and child outcomes Open
Introduction Technology has been used in evidence-based child maltreatment (CM) programs for over a decade. Although advancements have been made, the extent of the application of technology in these programs, and its influence on parental …
View article: Microwave Observations of Ganymede's Sub‐surface Ice: 2. Reflected Radiation
Microwave Observations of Ganymede's Sub‐surface Ice: 2. Reflected Radiation Open
Juno's microwave radiometer experiment (MWR) provided the first spatially resolved observations beneath the surface of Ganymede's ice shell. The results indicate that scattering is a significant component of the observed brightness tempera…
View article: Single-Point Calibration for Microwave Sounders: Application to TEMPEST-D
Single-Point Calibration for Microwave Sounders: Application to TEMPEST-D Open
Passive microwave sounders are critical for accurate forecasts from numerical weather prediction models. These sensors are calibrated using a traditional two-point approach, with one source typically a free-space blackbody target and the s…
View article: Dataset for "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation"
Dataset for "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation" Open
Dataset for figures in paper "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation".
View article: Dataset for "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation"
Dataset for "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation" Open
Dataset for figures in paper "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation".
View article: Jovian Thunderstorms as Observed by the Juno Mission
Jovian Thunderstorms as Observed by the Juno Mission Open
<p>On November 29<sup>th</sup>, 2021, the Juno Spacecraft completed its 38<sup>th</sup> perijove as part of its Extended Mission. Three of the spacecraft’s instruments, JunoCam, JIRAM, and MWR, image…
View article: An Ultra-Wideband Spectrometer for Lunar Heat-Flow Measurements
An Ultra-Wideband Spectrometer for Lunar Heat-Flow Measurements Open
The lunar heat-flow ultra-wideband spectrometer operates over an extended frequency band from 300 MHz to 6.0 GHz. It is a direct-acquisition single-chain digital spectrometer measuring 1024 spectral channels over 6 GHz bandwidth with each …
View article: Ganymede’s internal structure after Juno and before JUICE.
Ganymede’s internal structure after Juno and before JUICE. Open
We use the magnetic and gravity field data jointly to place constraints on the internal structure of Ganymede. The magnetic induction constraint comes mostly from the Galileo data, as the Juno flyby occurred when Ganymede was near the cent…
View article: Recent Advances in Quantitative Precipitation Estimation using Passive Microwave Observations from the Temporal Experiment for Storms and Tropical Systems (TEMPEST)
Recent Advances in Quantitative Precipitation Estimation using Passive Microwave Observations from the Temporal Experiment for Storms and Tropical Systems (TEMPEST) Open
The Temporal Experiment for Storms and Tropical Systems – Demonstration (TEMPEST-D) mission demonstrated the first global observations from a multi-frequency microwave radiometer on a CubeSat. The TEMPEST-D CubeSat was deployed…