A5000255003- Solar and Space Plasma Dynamics
- Earthquake Detection and Analysis
- Ionosphere and magnetosphere dynamics
- Geophysical and Geoelectrical Methods
- Geomagnetism and Paleomagnetism Studies
- Space exploration and regulation
- Seismic Waves and Analysis
- Solar Radiation and Photovoltaics
- Spacecraft Design and Technology
- Calibration and Measurement Techniques
- Geological Modeling and Analysis
- Oil, Gas, and Environmental Issues
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Geophysics and Gravity Measurements
- Computational Physics and Python Applications
- Advanced Computational Techniques and Applications
- Lightning and Electromagnetic Phenomena
- Planetary Science and Exploration
- Space Exploration and Technology
- Geophysical Methods and Applications
- Nuclear Physics and Applications
- CCD and CMOS Imaging Sensors
- Atmospheric Ozone and Climate
- Reservoir Engineering and Simulation Methods
National Oceanic and Atmospheric Administration
2009-2023
Cooperative Institute for Research in Environmental Sciences
2023
University of Colorado Boulder
2023
NOAA Space Weather Prediction Center
2008-2022
NOAA Weather Prediction Center
2009-2020
Denver Federal Center
2018
Geologic Hazards Science Center
2018
John Wiley & Sons (United States)
2016
Charles River Laboratories (Netherlands)
2016
Abstract This paper is the primary deliverable of very first NASA Living With a Star Institute Working Group, Geomagnetically Induced Currents (GIC) Group. The provides broad overview current status and future challenges pertaining to science, engineering, applications GIC problem. Science understood here as basic space Earth sciences research that allows improved understanding physics‐based modeling physical processes behind GIC. Engineering, in turn, “impact” aspect Applications are...
In this paper we continue the community‐wide rigorous modern space weather model validation efforts carried out within GEM, CEDAR and SHINE programs. particular effort, in coordination among Community Coordinated Modeling Center (CCMC), NOAA Space Weather Prediction (SWPC), modelers, science community, focus on studying models' capability to reproduce observed ground magnetic field fluctuations, which are closely related geomagnetically induced current phenomenon. One of primary motivations...
This paper evaluates the performance of an operational proton prediction model currently being used at NOAA's Space Weather Prediction Center. The evaluation is based on events that occurred between 1986 and 2004. Parameters for associated solar determine a set necessary conditions, which are to construct control events. Model output calculated these evaluated using standard verification measures. For probability forecasts we evaluate accuracy, reliability, resolution display results...
We have developed a technique to provide short‐term warnings of solar energetic proton (SEP) events that meet or exceed the Space Weather Prediction Center threshold J (>10 MeV) = 10 pr cm −2 s −1 sr . The method is based on flare location, size, and evidence particle acceleration/escape as parameterized by longitude, time‐integrated soft X‐ray intensity, intensity type III radio emission at ∼1 MHz, respectively. In this technique, are issued min after maximum ≥M2 flares. For cycle 23...
Solar flares produce radiation which can have an almost immediate effect on the near-Earth environment, making it crucial to forecast in order mitigate their negative effects. The number of published approaches flare forecasting using photospheric magnetic field observations has proliferated, with varying claims about how well each works. Because different analysis techniques and data sets used, is essentially impossible compare results from literature. This problem exacerbated by low event...
Solar Energetic Particle (SEP) events are interesting from a scientific perspective as they the product of broad set physical processes corona out through extent heliosphere, and provide insight into particle acceleration transport that widely applicable in astrophysics. From operations perspective, SEP pose radiation hazard for aviation, electronics space, human space exploration, particular missions outside Earth's protective magnetosphere including to Moon Mars. Thus, it is critical...
Abstract Geoelectric fields at the Earth's surface caused by magnetic storms constitute a hazard to operation of electric power grids and related infrastructure. The ability estimate these geoelectric in close real time provide local predictions would better equip industry mitigate negative impacts on their operations. Here we report progress toward this goal: development robust algorithms that convolve storm series with frequency domain impedance for realistic three‐dimensional (3‐D) Earth,...
Abstract In support of a multiagency project for assessing induction hazards, we present maps extreme‐value geoelectric amplitudes over about half the continental United States. These are constructed using parameterization induction: estimates Earth surface impedance, obtained at discrete geographic sites from magnetotelluric survey data, convolved with latitude‐dependent statistical geomagnetic activity, decades magnetic observatory data. Geoelectric estimated waveforms having 240 s...
Abstract We present a novel algorithm that predicts the probability time derivative of horizontal component ground magnetic field d B / t exceeds specified threshold at given location. This quantity provides important information is physically relevant to geomagnetically induced currents (GICs), which are electric associated with sudden changes in Earth's due space weather events. The model follows “gray‐box” approach by combining output physics‐based machine learning. Specifically, we...
Abstract We present the latest result of a community‐wide space weather model validation effort coordinated among Community Coordinated Modeling Center (CCMC), NOAA Space Weather Prediction (SWPC), developers, and broader science community. Validation geospace models is critical activity for both building confidence in results produced by assessing suitability transition to operations. Indeed, primary motivation this work supporting NOAA/SWPC's select or be transitioned into Our efforts...
Magnetic storms are potentially hazardous to the activities and technological infrastructure of modern civilization. This reality was dramatically demonstrated during great magnetic storm March 1989, when surface geoelectric fields, produced by interaction time‐varying geomagnetic field with Earth's electrically conducting interior, coupled onto overlying Hydro‐Québec electric power grid in Canada. Protective relays were tripped, collapsed, about 9 million people temporarily left without...
Severe Geomagnetic Disturbances (GMD) pose a threat to the reliability of United States bulk electrical power system. The NERC standard TPL-007 requires transmission planners assess potential problems in their service territories due Geomagnetically Induced Currents (GIC) including transformer thermal assessment. If assessment indicates vulnerability, development corrective action plan resolve issues. GIC calculation accuracy is critical In this paper, impact various geoelectric field...
The first solar x-ray imager (SXI) will provide a major advance in real-time, continuous monitoring of solar- terrestrial conditions. This instrument, which fly on Geostationary Operational Environmental Satellite (GOES), full-disk images the Sun once minute 0.6-6 nm range with 5 arcsec pixels. SXI's complement fluxes from disk-integrating GOES sensor and optical ground-based observatories. THe automated sequence SXI make it easy for forecasters, researchers, image processing algorithms to...
Abstract Increased ionization in the auroral oval leads to absorption of high‐frequency radio waves zone, or absorption. Auroral is typically characterized by global geomagnetic activity indices, such as Kp index. In this paper hourly range magnetic field (HR) examined an alternative 3‐hr index for describing dynamic and localized features represented (HRA). , magnetometer, riometer data were a 3‐year period stations spread across typical latitudes. A general linear relationship was shown...
Radar and synoptic data obtained during the Florida Area Cumulus Experiment have been used in an exploratory study to investigate effects of regional circulations on development convective activity south Florida. The radar were stratify days into four groups according their degree shower coverage. Mean soundings typical maps constructed for each group. These products then analyzed identify quantify principal factors that are associated with production showers. In general, overall differences...
First posted June 8, 2018 For additional information, contact: Director, Geologic Hazards Science CenterU.S. Geological SurveyBox 25046, Mail Stop 966Denver, CO 80225 A review is given of the present feasibility for accurately mapping geoelectric fields across North America in near-realtime by modeling geomagnetic monitoring and magnetotelluric survey data. Should this capability be successfully developed, it could inform utility companies magnetic-storm interference on electric-power-grid...
A NASA Goddard Space Flight Center Heliophysics Science Division-led team that includes NOAA Weather Prediction Center, the Catholic University of America, Electric Power Research Institute (EPRI), and Management, Inc., recently partnered with Department Homeland Security (DHS) Technology Directorate (S&T) to better understand impact Geomagnetically Induced Currents (GIC) on electric power industry. This effort builds a previous NASA-sponsored Applied Sciences Program for predicting GIC,...