THEMIS-ERG-Orbitals1 UCLA, March 18-19, 2010 THEMIS in the RBSP, ERG, Orbitals era Vassilis Angelopoulos UCLA ESS/IGPP & SSL/UCB

THEMIS-ERG-Orbitals2 UCLA, March 18-19, 2010 From prime mission to extended mission. Need for correlative space measurements Use of tools to enhance science – the user perspective Introduction

THEMIS-ERG-Orbitals3 UCLA, March 18-19, 2010 Launch= X GSE Y GSE TH-B TH-C TH-D TH-E TH-A P1 P2 P3 P4 P5 First 10 months: Commissioning and Coast Phase Observations

THEMIS-ERG-Orbitals4 UCLA, March 18-19, 2010 Dayside X GSE Y GSE First year baseline orbit (FY08) Dayside X GSE Y GSE TH-B TH-C TH-D TH-E TH-A P1 P2 P3 P4 P5 Second year baseline orbit (FY09) Tail Tail

THEMIS-ERG-Orbitals5 UCLA, March 18-19, 2010 THEMIS = THEMIS baseline + ARTEMIS Extended Phase Mission Concept, FY10 +

THEMIS-ERG-Orbitals6 UCLA, March 18-19, 2010 P3,4,5 tail science FY10-12 Continuing on the THEMIS legacy P3 X Y :00:00 P4 P3 P5 X Z Probes P3,4,5 in an R  plane, never achieved before, measure: Dipolarization fronts: dissipation, interaction, particle acceleration Cross-tail and field aligned currents under   invariance (ideal 3-point tail constellation) Tailward expansion speeds using timing, lateral expansion using finite gyroradius P4 P5

THEMIS-ERG-Orbitals7 UCLA, March 18-19, 2010 Extended THEMIS (P3,P4,P5) At the Magnetotail, Study: –Dipolarization fronts and currents –Dissipation of bursty fast flows Result: –Ability to map and model key instability region :00:00 P4 P3 P5 X Z X Y With first ever: –Simultaneous dR-dZ separations, 0.1-1R E –Clustered orbits study the 8-12R E region FAST Courtesy: Pulkkinen and Wiltberger

THEMIS-ERG-Orbitals8 UCLA, March 18-19, 2010 P3,4,5 dayside science (FY10-12) Dayside transients, reconnection Probes P3,4,5 in an R  plane, never achieved before, measure: Magnetopause and field aligned currents under under   invariance (ideal 3-point dayside constellation) Bracket reconnection site, measure inflow and outflow conditions :00:00 P4 P3 P5 X Z 1 st, 2 nd, 3 rd extended dayside Scales: R E, P3 out

THEMIS-ERG-Orbitals9 UCLA, March 18-19, 2010 Extended THEMIS (P3,P4,P5) At Subsolar Magnetopause, study: –Asymmetric reconnection: dynamics, evolution and role of cold ions –Internal FTE structure and electron acceleration Result: –Hall-physics of subsolar magneto-pause reconnection, paves way to MMS [THEMIS Coast Phase Mozer et al. GRL] Using novel: –Simultaneous dR-dZ separations at R E monitor inflow and outflow –Cluster-like separations at subsolar region :00:00 P4 P3 P5 X Z 1 st, 2 nd, 3 rd extended dayside Scales: R E, P3 out

THEMIS-ERG-Orbitals10 UCLA, March 18-19, 2010 Extended THEMIS (FY12-14) At Inner Magnetosphere, Study Role of: –ULF/VLF/EMIC waves on ion, electron energization/losses –Large electric fields on storm time ring current Result: –Comprehensive AC waves and E-fields models Using novel: –0.1-2R E separations to resolve temporal/spatial evolution of gradients –daily conjunctions: PFISR, S-DARN P3 P4 P5

THEMIS-ERG-Orbitals11 UCLA, March 18-19, 2010 THEMIS separations in FY hrs and hrs

THEMIS-ERG-Orbitals12 UCLA, March 18-19, 2010 THEMIS+RBSP (FY12-14)

THEMIS-ERG-Orbitals13 UCLA, March 18-19, 2010 Data Collection and Distribution THEMIS GMAG THEMIS ASI THEMIS PROBES SSL Ground calibration Software depository CDF and Cal. Files MIRROR EUROPE MIRROR JAPAN MIRROR TAIWAN NASA (CDA, SSC) Researcher WWW NOAA (GOES,SPIDR) KYOTO (AE Index,Dst,Kp) Ancillary GMAG (MACCS,Carisma, Greenland, GIMA)

THEMIS-ERG-Orbitals14 UCLA, March 18-19, 2010 THEMIS Software

THEMIS-ERG-Orbitals15 UCLA, March 18-19, 2010 Crib Sheets  Crib sheets available for loading, processing and plotting THEMIS data  Effective format for exchange of ideas  Example: thm_crib_fgm IDL> thm_load_state, probe='a', /get_support_data thm_load_fgm, lev=1, probe=['a'], type='raw', suffix='_raw' thm_cal_fgm, probe=['a'], datatype='fg?', in_suffix='_raw', out_suffix='_ssl' tplot_options, 'title', 'THEMIS FGM Examples' tplot, ['tha_fgl_raw', 'tha_fgl_ssl']

THEMIS-ERG-Orbitals16 UCLA, March 18-19, 2010 Substorm Example  Substorm evening combining OMNI, THEMIS, and GOES data.

THEMIS-ERG-Orbitals17 UCLA, March 18-19, 2010 Magnetopause Crossing - 1

THEMIS-ERG-Orbitals18 UCLA, March 18-19, 2010 Data Availability All data are distributed to the entire community. Distribution by: –CDFs via web, IDL-based platform independent code, VxOs (THEMIS is SPASE compatible) Data Level Definitions: Level 0 Data – Raw files (*.pkt) one per APID (Only used for loading ESA data) Level 1 Data - CDF (Common Data Files) files (*.cdf), contain raw, uncalibrated data. i.e. counts, DAC units. Requires TDAS software to interpret. Calibration is done by default when Level 1 data is input. Level 2 Data - CDF files – contain physical quantities – TDAS software is not needed for interpretation. Files for ESA, FBK, FIT, FGM, MOM*, SST – can be downloaded from SPDF. Data products are validated by a responsible scientist (tohban) –Ensures quick problem finding and resolution –Trains new team members on the full dataset

THEMIS-ERG-Orbitals19 UCLA, March 18-19, 2010 V5.00 Science Software/Data Availability Status Report (As of Fall 2009) –General Loads, introduces and calibrates all L1 quantities, all instruments Loads calibrated L2 quantities –STATE L1 STATE available since launch, V03 STATE (improved attitude and spin phase corrections) - Soon –FGM L1, L2 data available since early March 2007 –FIT / FFT / FBK - L1, L2 data available since early March 2007 –SCM L1 data available since early March 2007 L2 frequency spectrograms (FBK) available now L2 SCM data became available in summer 2009 –EFI All L1 data available from TH-C since May 2007, TH-D,E since Jun 7, 2007 L2 EFI available Fall 2009 –ESA No L1 data, only L0 data – however, read-in is transparent to user All data available since ESA turn-on, i.e., mid-March 2007 L2 omnidirectional energy spectrograms, ground moments available now –SST L1 data available since SST turn-on, mid-March 2007 L2 omnidirectional energy spectrograms available now –ASI L1 thumbnail images from 21 stations available. L1 full-resolution images available up to March 2009, Mosaics, movies for full mission –GMAG L2 cdf files with ground magnetometer data from 51 stations. (Includes ancillary: Greenland, Augsburg College). –Ancillary Daya Served GOES – The GOES high-resolution (0.5s) magnetometer data is from GOES 10, 11 and 12 satellites from September 2007–June 2008 for each satellite. Acknowledgement to Howard Singer at NOAA Space Weather Prediction Center for the data. ACE - The ACE data consists of magnetometer values in GSM coordinates with one minute averages and Solar Wind Electron Proton Alpha Monitor data Data Availability to Community: Products Status

THEMIS-ERG-Orbitals20 UCLA, March 18-19, 2010 Data Processing and Community Support All data/plots available, calibrated 1 day after downlink ( Routine data distribution in 4 ways –CDF downloads from SPDF, UCB, 4 mirror sites –HTTP and FTP socket connection through software (seemless) –Bundled downloads via UCB site (per instrument, spacecraft, product) –On-line at VMOs, and PDS and SPASE compatible. Free, powerful software distribution, on-line docs, tutorials –IDL-based, platform independent –Community demos biannually at GEM meetings + trainings on demand On-line Support ( ) SVN configuraton-controlled: distributed, grass-roots effort

THEMIS-ERG-Orbitals21 UCLA, March 18-19, 2010 Summary  The data and software system provides familiar and standard interfaces to multiple missions and different science data sets.  Data is stored in the unified Common Data Format (CDF) in the distribution center and available via WWW.  THEMIS software is free, publicly available, platform independent, user friendly, and open for community contributions.  The system design philosophy is based on streamlining data and software distribution and exchange, thereby enhancing science productivity