Relating Mars Observations with Earth Observations Odyssey/GOES Energetic Particle Data Comparison (2002-2006) Ron Turner, John Starcher, Matt Rudy (ANSER) Cary Zeitlin (LBNL) A month-by-month comparison of Odyssey count-rate data with GOES integral particle flux data Mars data are derived from the count-rate on the MARIE, Gamma Ray Spectrometer (GRS), and High Energy Neutron Detector (HEND) instruments on the Odyssey Spacecraft in orbit around Mars Earth data are derived from the GOES Space Environment Monitor in geostationary Earth orbit (archived by the National Geophysical Data Center) A side-bar shows the relative positions of Earth and Mars at the beginning, middle, and end of each month

Legend Mars Odyssey data from MARIE, Gamma Ray Spectrometer (GRS), and High Energy Neutron Detector (HEND) from April 2002 through December 2005 MARIE data is from the entrance silicon detector (“A1”) Most of the count rate is from protons with energy >20 MeV up to approximately 1 GeV Count rate was normalized to 2002 quiet time background Counts per minute averaged over 10 minutes Time stamp is middle of 10 minute interval Scale factor is 569 So a “1” is 569 counts per minute GRS data is from the GRS Upper Level Discriminator (ULD) Most of the count rate is from protons with energy >35-40 MeV to well over 1 GeV Scale factor is 1678 So a “1” is 1678 counts per minute averaged over 10 minutes HEND data is from the inner scintillator Minimum energy sensitivity varies over time from a few to a few tens of MeV Counts per five minutes averaged over 60 minutes Time stamp is middle of hour interval Scale factor is 92.5 So a “1” is 92.5 counts per five minutes averaged over an hour

Odyssey and GOES Data March 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data April 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data May 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 1 6 11 16 21 26 31

Odyssey and GOES Data June 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data July 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data August 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data September 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data October 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 1 6 11 16 21 26 31

Odyssey and GOES Data November 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data December 2002 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 1 6 11 16 21 26 31

Odyssey and GOES Data January 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data February 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26

Odyssey and GOES Data March 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data April 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data May 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 1 6 11 16 21 26 31

Odyssey and GOES Data June 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 10 6 11 16 21 26 31

Odyssey and GOES Data July 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 1 6 11 16 21 26 31

Odyssey and GOES Data August 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data September 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data October 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data November 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data December 2003 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data January 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data February 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data March 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data April 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data May 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data June 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data July 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data August 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data September 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data October 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data November 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data December 2004 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data January 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data February 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data March 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data April 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data May 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data June 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data July 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data August 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data September 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data October 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data November 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31

Odyssey and GOES Data December 2005 1 .1 10 100 10-2 10-1 1.0 101 102 103 104 Counts Particles/cm2 sec sr Odyssey GOES 11 6 11 16 21 26 31