The Scintillation Prediction Observations Research Task (SPORT) Mission

No abstract availabl

The Scintillation Prediction Observations Research Task (SPORT) Mission

No abstract availabl

The Scintillation Prediction Observations Research Task SA43C-04

No abstract availabl

Scintillation Observations and Response of The Ionosphere to Electrodynamics (SORTIE) Mission First Light

At low and middle latitudes, wave-like plasma perturbations are thought to provide the seeds for larger perturbations that may evolve non-linearly to produce irregularities, which in turn have deleterious effects on HF communications and global positioning systems. Unfortunately, there is currently no comprehensive atlas of measurements describing the global spatial or temporal distribution of wave-like perturbations in the ionosphere. The SORTIE mission, a CubeSat experiment with team members from ASTRA, AFRL, UTD, and Boston College, was designed to help map and further understand the wave-like plasma perturbation distributions throughout the ionosphere. The SORTIE 6U CubeSat sensor package measures key in-situ plasma parameters, and includes an ion velocity meter and a planar Langmuir probe. SORTIE will provide (1) the initial spectrum of wave perturbations which are the starting point for plasma instabilities; (2) measured electric fields which determine the magnitude of the instability growth rate near the region where plasma bubbles are generated; (3) initial observations of irregularities in plasma density which result from plasma instability growth. The SORTIE spacecraft was deployed from the ISS in February 2020 and began data collections shortly after orbit insertion. The measurements are expected to continue for at least a year. In this presentation we present the first light results of the SORTIE mission, as well as reviewing the science objectives and providing an overview of the spacecraft and instruments

The Scintillation Prediction Observations Research Task (SPORT): A Pathfinder Mission

No abstract availabl

Science CONOPS for Application of SPORT Mission Data to Study Large (~1000km) Ionospheric Plasma Depletions

The Scintillation Prediction Observations Research Task (SPORT) mission is a single 6U CubeSat space weather satellite planned for an October 2022 launch into an ISS-like orbit. The primary purpose of the SPORT mission is to determine the longitudinal effects on equatorial plasma bubble (EPB) growth resulting from the offset dipole magnetic field of the Earth. By combining field and plasma measurements from SPORT with other low-altitude (i.e., alt \u3c 1000 km) spacecraft, it is possible to investigate large-scale (\u3e 1000 km) EPB structures. The types of investigation made possible by measurements from SPORT and other contemporaneous missions include 1) dynamics of depleted magnetic flux tubes; 2) dynamics of field-aligned EPB expansion versus propagation speed; 3) EPB vertical extent; and 4) EPB temporal evolution. To support these investigation types, the respective modes of conjunctions are: 1) simultaneous intersection of a magnetic flux tube; 2) intersection of magnetic flux tube separated in time; 3) Simultaneous Latitude/Longitude position conjunction; and 4) Non-simultaneous latitude/longitude position conjunction. This paper will summarize the SPORT satellite and data used for Science CONOPS to accomplish these objectives

Changes in thermospheric temperature induced by high-speed solar wind streams

During high-speed stream (HSS) events the solar wind speed increases, and the cross polar cap potential increases, leading to increased Joule heating at high latitudes. The heat input at high latitudes heats the polar regions, which then conducts to lower latitudes, producing global heating. The heating occurs during the risetime of the cross polar cap potential and throughout the period of high cross polar cap potential as seen in our simulation. These simulations are performed using the Utah State University global thermosphere model driven by Joule heating rates that are consistent with electric fields observed by DMSP-15 observations of HSS events. Cooling occurs as the cross polar cap potential decreases and continues for several days after the cross polar cap potential has returned to background values. Polar cap ionospheric observations are compared to model simulations of heating and cooling, providing evidence that the thermospheric model is capturing the HSS energy input and the post-HSS multiday return to pre-HSS conditions. The HSS heating can be as high as 100 K (as seen from both the model and the data) at high latitudes, with a corresponding, but lower, global increase in thermospheric temperature

Scintillation Observations and Response of the Ionoshere to Electrodynamics (SORTIE)

At low and middle latitudes, wavelike plasma perturbations are thought to provide the seeds for larger perturbations that may evolve non-linearly to produce irregularities which in turn have deleterious effects on HF communications and global positioning systems. However, there is currently no comprehensive atlas of measurements describing the global spatial or temporal distribution of wave-like perturbations in the ionosphere. The SORTIE mission is a 6U CubeSat mission with team members from ASTRA, AFRL, UTD, COSMIAC, and Boston College. The SORTIE spacecraft is designed to approach the complex challenges in discovering the wave-like plasma perturbations in the ionosphere. SORTIE will provide the initial spectrum of wave perturbations which are the starting point for the RF calculation, provide measured electric fields which determine the magnitude of the instability growth rate near where plasma bubbles are generated, and will provide initial observations of the irregularities in plasma density which result from instability growth. The SORTIE mission is slated to launch in late 2017, and will provide a timely overlap with NASA\u27s ICON mission scheduled to launch in the 2017 timeframe. The baseline operational plan will be a year of on-orbit lifetime orbiting at a low to middle inclination orbit near 350-400 km altitude

GEOMETRIA DESCRIPTIVA I (Examen 1r quatrimestre)

1r Examen parcial