# Tohban Notes on 2020-08-16 - 2020-08-25


Geomagnetic activity overview

2020-08-16 - 2020-08-21      Moderate but prolonged storm
                             Dst minimum of -63 nT at 0600 UT on 08/19
                        
2020-08-18/06:00 - 09:00 UT  AE/AL activations with AE ~ 300 nT;
2020-08-18/11:00 - 14:00 UT  AE/AL activations with AE > 500 nT;
2020-08-18/23:00 - 24:00 UT  AE/AL activation with  AE > 500 nT;

2020-08-19/01:00 - 0600 UT   Steady Magnetospheric Convection (SMC) interval with AE ~ 300 nT;

2020-08-21 - 2020-08-25      Some Dst activation with Dst minimum of -45 nT at 1500 UT on 08/23;

2020-08-21/18:00 - 23:00 UT  AE/AL activations with AE ~300 nT;

2020-08-22/04:00 - 09:00 UT  SMC interval with AE ~ 300 nT between 
2020-08-22/16:00 - 21:00 UT  AE/AL activation (long substorm) with AE > 500 nT; 
2020-08-22/23:00 - 24:00 UT  AE/AL activation (substorm) with AE maximim ~ 400 nT between 2300 and 2400 UT  

2020-08-23/00:00 - 01:00 UT  AE/AL activation with AE maximim ~ 400 nT continued;
2020-08-23/13:00 - 15:00 UT  AE/AL sawtooth-like activations with AE > 500 nT;
2020-08-23/22:00 - 23:00 UT  AE/AL activation with AE maximum ~ 300 nT.

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Science notes on ELFIN data

EL-A

2020-08-19/05:44 - 05:49 UT South Ascending,  Significant flux increase, isotropization  (SMC event)
                                              check for possible saturation

2020-08-21/19:15 - 19:16 UT North Descending, Increased flux, precipitation (high par flux)

2020-08-22/19:22 - 19:28 UT South Ascending,  Increased flux, isotropization (long substorm) 
2020-08-22/20:55 - 20:58 UT South Ascending,  Increased flux, precipotation (long substorm) 

EL-B

2020-08-19/01:50 - 01:51 UT North Descending,  Increased flux, nearly isotropic at L~8.0, MLT~ 23.9

2020-08-20/11:30 - 11:32 UT North Descending,  Increased flux, isotropization at L~7, MLT~1.0
2020-08-20/20:50 - 20:53 UT North Descending,  Increased flux, precipitation

2020-08-21/19:12 - 19:16 UT South Descending,  Increased flux, isotropization
2020-08-21/20:46 - 20:49 UT South Descending,  Increased flux, isotropization

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Data collection (current status)

EL-A

2020-08-16 7 SZ, North Descending
2020-08-17 4 SZ, North Descending                                          
2020-08-18 2 SZ, North Descending 
2020-08-19 11 SZ, South Ascending, North Descending
2020-08-20 9 SZ, South Ascending, North Descending 
2020-08-21 9 SZ, South Ascending, North Descending 
2020-08-22 8 SZ, South Ascending, North Descending 
2020-08-23 3 SZ, North Descending 
2020-08-24 8 SZ, North Descending 


Comments
2020-08-17/20:08 - 20:14 UT North Descending, Intermittent gaps in FGM data
2020-08-19/14:14 - 15:16 UT North Descending, Too short SZ collection, low counts 
2020-08-19/18:08 - 18:09 UT South Ascending,  Data gap
2020-08-19/22:49 - 22:51 UT South Ascending,  Data gap
2020-08-20/02:04 - 02:07 UT South Ascending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/09:47 - 09:51 UT South Ascending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/11:20 - 11:04 UT South Ascending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/13:40 - 13:42 UT North Descending, Data gaps (downlink incomplete?)
2020-08-20/14:24 - 14:25 UT South Ascending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/17:30 - 17:32 UT South Ascending,  Data gaps (downlink incomplete?)
2020-08-20/22:10 - 22:14 UT South Ascending,  Data gaps (downlink incomplete?)
2020-08-20/23:46 - 23:48 UT South Ascending,  Data gaps (downlink incomplete?)
2020-08-21/13:49 - 13:50 UT South Ascending,  Data gaps (downlink incomplete?)
2020-08-21/18:26 - 18:32 UT South Ascending,  Intermittent data gaps (downlink incomplete?)
2020-08-22/22:31 - 22:32 UT South Ascending,  Data gaps (downlink incomplete?)
2020-08-23/14:52 - 14:54 UT Morth Descending, Short SZ collection, ends at L~8.5, low counts
2020-08-24/00:12 - 00:14 UT Morth Descending, Short SZ collection, ends at L~8.9, low counts
2020-08-24/11:12 - 11:14 UT North Descending, Data gaps (downlink incomplete?)
2020-08-24/13:45 - 13:47 UT North Descending, Data gaps (downlink incomplete?)
2020-08-24/14:14 - 14:16 UT Morth Descending, Short SZ collection, ends at L~10.4, low counts
2020-08-24/18:53 - 18:56 UT Morth Descending, Short SZ collection, ends at L~7.7, low counts

EL-B

2020-08-16 8 SZ, South Descending
2020-08-17 7 SZ, South Descending                                          
2020-08-18 6 SZ, South Descending 
2020-08-19 4 SZ, South Descending 
2020-08-20 6 SZ, South Descending, North Descending  
2020-08-21 5 SZ, South Descending 
2020-08-22 7 SZ, South Descending 
2020-08-23 6 SZ, South Descending 

Comments
2020-08-16/06:46 - 06:51 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-17/06:11 - 06:12 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-17/21:40 - 21:45 UT South Descending,  Intermittent data gaps in EPD and FGM (downlink incomplete?)
2020-08-18/00:49 - 00:55 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-18/10:11 - 10:17 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-18/13:20 - 13:21 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-18/21:03 - 21:08 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/13:02 - 13:07 UT North Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-20/19:49 - 19:51 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-21/02:06 - 02:11 UT South Descending,  Intermittent data gaps, pixelated PADs, data is not regularized
2020-08-21/03:40 - 03:45 UT South Descending,  Intermittent data gaps, pixelated PADs, data is not regularized
2020-08-21/13:02 - 13:03 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-21/14:34 - 14:36 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-21/16:04 - 16:09 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-21/19:12 - 19:14 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-22/01:30 - 01:33 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-22/09:17 - 09:23 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-22/12:22 - 12:26 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-22/18:34 - 18:36 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-22/18:10 - 18:11 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-22/21:42 - 21:46 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-23/00:52 - 00:56 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-23/07:07 - 07:12 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-23/11:47 - 11:51 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-23/13:19 - 13:21 UT South Descending,  Data gaps (downlink incomplete?)
2020-08-23/14:51 - 14:56 UT South Descending,  Intermittent data gaps (downlink incomplete?)
2020-08-23/19:32 - 19:33 UT South Descending,  Data gaps (downlink incomplete?)