Space Science at ASTRA Geoff Crowley Atmospheric & Space Technology Research Associates www.astraspace.net Simulation Data Assimilation Data Analysis Instrumentation.

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Space Science at ASTRA Geoff Crowley Atmospheric & Space Technology Research Associates Simulation Data Assimilation Data Analysis Instrumentation

Space Science at ASTRA Simulation: ASPEN-TIMEGCM, ASPEN-Mars Data Assimilation: IDA4D Data Analysis: Satellite Data (TIMED/GUVI, GRACE, CHAMP) Ground-based (ISRs, TIDDBIT, etc) Instrumentation: TIDDBIT HF Doppler Radar System GUVITO - miniaturized GUVI (with APL) CASES - GPS dual frequency receiver (with Cornell)

November 14, 2015 IDA4D: Ionospheric Research Through Data Assimilation 3DVAR Objective Analysis Method (Meteorology) Well Validated - Based on 15 Years of 2D-3D Tomographic Research Designed for Adaptation and Configuration Based on Science Problem Designed to Easily Add New Data Sources, Models, Methods Non-linear iterative estimator – Solves for log of density - positive solutions – Allows for non-linear data sources – 1356 EUV currently ingested and being tested IDA3D Data Model User Config

Scan operation of the GUVI instrument on TIMED. The slit dimension is along the satellite track and is subdivided into 14 pixels. The cross-track scan is initiated every 15 s.

Nightside Observations: February 2, 2002 Can the TIME-GCM (or any model) Predict This?

9-Day Waves In GUVI Composition Latitudes -90 to +90°