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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,513 records · Page 84
All sourcesNASA NTRSDOE OSTI
NASA NTRS2021

Time-Resolved Observations of Precipitation Structure and Storm Intensity with a Constellation of Smallsats: Level-1 Radiance Algorithm Theoretical Basis Document

This Algorithm Theoretical Basis Document (ATBD) describes the theoretical background of the TROPICS native radiance calibration algorithms. It also includes TROPICS payload characteristics and the algorithm’s ancillary data (i.e., data coming from sources other than the TROPICS Space Vehicle). Details of the native radiance (i.e., Level-1a antenna temperatures and Level-1b brightness temperatures) data product format can be found in the TROPICS Data User’s Guide. This ATBD information on the pre-launch testing completed to verify the algorithm. The TROPICS Data User’s Guide will contain the post-launch radiance validation.

TROPICS↗
NASA NTRSDate not supplied

Storms That Go "BOOM"

Sarah Bang (NASA MSFC Earth Science) will talk about how thunderstorms work, and how NASA scientists work together to study thunderstorms from ground, air, and space.

Sarah D Bang↗
NASA NTRSDate not supplied

Tracking Magnetic Perturbations, dB/dt and Geomagnetic Indices for Geospace Storms on a Routine Basis at the CCMC

The first comprehensive assessment of geospace model skill to specify magnetic perturbations (delta-B) on the ground and their time derivative (dB/dt) was performed at the Community Coordinated Modeling Center starting in 2010. This study resulted in the addition of the Space Weather Modling Framework to the suite of operational models run by the NOAA Space Weather Prediction Center (SWPC). Since then, magnetic pertubations have been made available on a larger scale for Run-on-Request simulations in geospace at the CCMC. We will demonstrate recent additions to the suite of analysis tools and model results including magnetic perturbations at more stations and on a grid of positions from both, original model outputs (SWMF using preset run configurations) and post-processed calculations using CalcDeltaB and their analysis and visualization using the open-source Kamodo data access and analysis suite and the Comprehensive Assessment of Models and Events using Library tools (CAMEL) application.

Lutz Rastaetter↗
NASA NTRS2023

Hemispheric Symmetry and Asymmetry of Poleward Moving Radar Auroral Forms (PMRAFs) and Associated Polar Cap Patches During a Geomagnetic Storm

Magnetopause reconnection is known to impact the dayside ionosphere by driving fast ionospheric flows, auroral transients, and high density plasma structures named polar cap patches. However, most of the observed reconnection impact is limited to one hemisphere, and a question arises as to how symmetric the impact is between hemispheres.

hemispheric symmetry/asymmetry↗
NASA NTRSDate not supplied

Solar Storms and Flying to Mars

Solar energetic particles (SEP) are a significant concern for interplanetary human spaceflight. Here we consider SEP radiation hazards for humans on long-duration deep space missions, such as NASA’s 850-day mission concept set to launch in time to get there by 2040. Astronauts must deal not only with possible accumulated dose, but also with acute hazards that can develop in approximately the same time scale as the speed-of-light communications time. We discuss the space weather infrastructure needed in the vicinity of the spacecraft and/or Mars to alleviate the SEP radiation hazard.

space weather↗