C. G. M. Brum
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View article: Slightly-deformed clouds of enhanced mesospheric sodium and potassium concentration over the SAMA region: a case study
Slightly-deformed clouds of enhanced mesospheric sodium and potassium concentration over the SAMA region: a case study Open
This work investigates a slightly-deformed cloud of enhanced mesospheric sodium (Na) and potassium (K) layers registered on 24 June 2023 by the dual-beam Na/K LIDAR system operating over the low-latitude sector of São José dos Campos - Bra…
View article: Retrieval of Rotational Temperatures From the Arecibo Observatory Ebert‐Fastie Spectrometer and Their Inter‐Comparison With Co‐Located K‐Lidar and SABER Measurements
Retrieval of Rotational Temperatures From the Arecibo Observatory Ebert‐Fastie Spectrometer and Their Inter‐Comparison With Co‐Located K‐Lidar and SABER Measurements Open
Rotational temperatures in the Mesosphere‐Lower Thermosphere region are estimated by utilizing the OH(6,2) Meinel band nightglow data obtained with an Ebert‐Fastie spectrometer (EFS) operated at Arecibo Observatory (AO), Puerto Rico (18.35…
View article: Climatology of atmospheric solar tidal mode effects on ionospheric F2 parameters over the American sector during solar minimum between cycles #23 and #24
Climatology of atmospheric solar tidal mode effects on ionospheric F2 parameters over the American sector during solar minimum between cycles #23 and #24 Open
This work presents the contribution of solar atmospheric tides (diurnal, semidiurnal, and terdiurnal modes) to the variability of the parameters critical frequency ( foF 2 ) and peak height of the F 2 -layer ( hmF 2 ) in the American secto…
View article: Data sets for "On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector" by Wright et al.
Data sets for "On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector" by Wright et al. Open
Copy of data described in 'On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector' by Wright et. a…
View article: Data sets for "On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector" by Wright et al.
Data sets for "On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector" by Wright et al. Open
Copy of data described in 'On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector' by Wright et. a…
View article: Science goals for a high-frequency radar and radio imaging array
Science goals for a high-frequency radar and radio imaging array Open
A medium and high-frequency antenna array for radar and radio imaging of the ionosphere is planned for installation in Aguadilla, Puerto Rico. Science goals include the study of space weather, radio propagation, meteors, lightning, and pla…
View article: Characterizing the variability and structures in the coupled/complex ionosphere-atmosphere system
Characterizing the variability and structures in the coupled/complex ionosphere-atmosphere system Open
Whitepaper #331 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; research tools and inf…
View article: Regular Solar Radio Imaging at Arecibo: Space Weather Perspective of Evolution of Active Regions
Regular Solar Radio Imaging at Arecibo: Space Weather Perspective of Evolution of Active Regions Open
Whitepaper #265 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional topics: space weather research/operations/research loop; ground-based missions/…
View article: Technical Design of a High-Frequency Antenna Array for Radar and Radio Imaging of the Ionosphere
Technical Design of a High-Frequency Antenna Array for Radar and Radio Imaging of the Ionosphere Open
Whitepaper #187 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; state of the professio…
View article: Science Goals for a New Arecibo Observatory
Science Goals for a New Arecibo Observatory Open
Whitepaper #183 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; research tools and inf…
View article: Design Concepts for a New Arecibo Radar and Radio Telescope
Design Concepts for a New Arecibo Radar and Radio Telescope Open
Whitepaper #182 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; research tools and inf…
View article: Science Goals for a High-Frequency Radar and Radio Imaging Array
Science Goals for a High-Frequency Radar and Radio Imaging Array Open
Whitepaper #188 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; state of the professio…
View article: Solar Radio Imaging at Arecibo: The Brightness Temperature and Magnetic Field of Active Regions
Solar Radio Imaging at Arecibo: The Brightness Temperature and Magnetic Field of Active Regions Open
Strong solar magnetic fields are the energy source of intense flares and energetic coronal mass ejections of space weather importance. The key issue is the difficulty in predicting the occurrence time and location of strong solar eruptions…
View article: Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD
Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD Open
The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these events is still needed. In Dec…
View article: Long‐Term Trends in the Upper Atmosphere Using the Incoherent Scatter Radar Observations Over Arecibo
Long‐Term Trends in the Upper Atmosphere Using the Incoherent Scatter Radar Observations Over Arecibo Open
Upper atmospheric long‐term trends have been characterized through the analysis of the ionospheric ion temperature ( T i ). Previous studies used T i observations from various incoherent scatter radar (ISR) facilities located at different …
View article: On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector
On the detection of a solar radio burst event that occurred on 28 August 2022 and its effect on GNSS signals as observed by ionospheric scintillation monitors distributed over the American sector Open
As part of an effort to observe and study ionospheric disturbances and their effects on radio signals used by Global Navigation Satellite Systems (GNSS), alternative low-cost GNSS-based ionospheric scintillation and total electron content …
View article: Ionospheric Variability over the Brazilian Equatorial Region during the Minima Solar Cycles 1996 and 2009: Comparison between Observational Data and the IRI Model
Ionospheric Variability over the Brazilian Equatorial Region during the Minima Solar Cycles 1996 and 2009: Comparison between Observational Data and the IRI Model Open
The behavior of the Brazilian equatorial ionosphere during the solar minimum periods, 1996 and 2009, which cover the solar cycles 22/23 and 23/24, respectively, is investigated. For this, the F2 layer critical frequency (foF2) and peak hei…
View article: Rotational temperatures retrival from the Arecibo Observatory Ebert-Fastie spectrometer and their inter-comparison with Lidar and SABER measurements
Rotational temperatures retrival from the Arecibo Observatory Ebert-Fastie spectrometer and their inter-comparison with Lidar and SABER measurements Open
Key Points: 1) Good inter-comparison is obtained between Arecibo observatory spectrometer and Lidar temperatures and results are similar to previous studies. 2) The temperature comparison improves considerably when time varying weighting f…
View article: Probing the Plasma Tail of Interstellar Comet 2I/Borisov
Probing the Plasma Tail of Interstellar Comet 2I/Borisov Open
We present an occultation study of compact radio sources by the plasma tail of interstellar comet 2I/Borisov (C/2019 Q4) both pre- and near-perihelion using the Arecibo and Green Bank radio telescopes. The interplanetary scintillation tech…
View article: Rotational temperatures retrival from the Arecibo Observatory Ebert-Fastie spectrometer and their inter-comparison with Lidar and SABER measurements
Rotational temperatures retrival from the Arecibo Observatory Ebert-Fastie spectrometer and their inter-comparison with Lidar and SABER measurements Open
Rotational temperatures in the Mesosphere-Lower Thermosphere region are estimated by utilizing the OH(6,2) Meinel band nightglow emission observed with an Ebert-Fastie Spectrometer (EFS) operated at Arecibo Observatory (AO), Puerto Rico (1…
View article: Regular Solar Radio Imaging at Arecibo: Space Weather Perspective of Evolution of Active Regions
Regular Solar Radio Imaging at Arecibo: Space Weather Perspective of Evolution of Active Regions Open
The sudden release of magnetic energy on the Sun drives powerful solar flares and coronal mass ejections. The key issue is the difficulty in predicting the occurrence time and location of strong solar eruptions, i.e., those leading to the …
View article: Probing the Plasma Tail of Interstellar Comet 2I/Borisov
Probing the Plasma Tail of Interstellar Comet 2I/Borisov Open
We present an occultation study of compact radio sources by the plasma tail of interstellar Comet 2I/Borisov (C/2019 Q4) both pre- and near-perihelion using the Arecibo and Green Bank radio telescopes. The interplanetary scintillation (IPS…
View article: Responses of intermediate layers to geomagnetic activity during the 2009 deep solar minimum over the Brazilian low-latitude sector
Responses of intermediate layers to geomagnetic activity during the 2009 deep solar minimum over the Brazilian low-latitude sector Open
This work presents the daytime behavior of the intermediate layer (ILs) parameters (the virtual height – h'IL, and the top frequency – ftIL) over the low-latitude region of Cachoeria Paulista (CP, 22.42∘ S; 45∘ W, I: −34.59∘) during the 20…
View article: Anomalous responses of the F 2 layer over the Brazilian equatorial sector during a counter electrojet event: a case study
Anomalous responses of the F 2 layer over the Brazilian equatorial sector during a counter electrojet event: a case study Open
Key Points: • Gravity waves impacts in the anomalous responses of the F layer over Brazil during a counter electrojet event; • Some signatures in ionograms suggest the gravity wave as responsible for the CEJ occurrence in this day. Abstrac…
View article: Reply on RC1
Reply on RC1 Open
Abstract. This work presents the daytime behavior of the intermediate layer (ILs) parameters (the virtual height â h'IL, and the top frequency â ftIL) over the low-latitude region of Cachoeria Paulista (CP, 22.42ââS; 45ââW, I: …
View article: Intermediate Layers responses to Geomagnetic Activity During the 2009 Deep Solar Minimum Over the Brazilian Low Latitude Sector
Intermediate Layers responses to Geomagnetic Activity During the 2009 Deep Solar Minimum Over the Brazilian Low Latitude Sector Open
Intermediate layers (ILs) are regions of enhanced electron density located in the ionospheric valley that extends from the peak altitude of the daytime E-region to the bottom side of the F-region. This work presents the daytime behavior of…
View article: The Future Of The Arecibo Observatory: The Next Generation Arecibo Telescope
The Future Of The Arecibo Observatory: The Next Generation Arecibo Telescope Open
The Arecibo Observatory (AO) is a multidisciplinary research and education facility that is recognized worldwide as a leading facility in astronomy, planetary, and atmospheric and space sciences. AO's cornerstone research instrument was th…