Table 6 Summary of SV-2015-2020 candidate models submitted to IGRF-12

Team

Model

Organization

Data

Comments (parent model, propagation to 2015)

A

SV-2015-2020-A

BGS

Ørsted; CHAMP; Swarm A, B, C;

Based on core flow parent model evaluated

Observatory hourly means

and averaged SV from 2015.0 to 2020.0

B

SV-2015-2020-B

DTU Space

Ørsted; CHAMP; SAC-C; Swarm A, B, C;

Based on parent CHAOS-5 model

Observatory monthly means

evaluated from splines at 2014.0

C

SV-2015-2020-C

ISTerre

Ørsted; SAC-C; CHAMP; Swarm B

Based on parent ensemble COV-OBS.x1 model

observatory monthly mean

evaluated and averaged SV from 2015.0 to 2020.0

D

SV-2015-2020-D

IZMIRAN

Swarm A, B, C

Natural orthogonal components (NOCs)

Nov-2013 to Sep-2014, no data selection

estimated at 2014.7 (sept-2014)

E

SV-2015-2020-E

NGDC-NOAA

Ørsted; Swarm A, B, C

From parent model

first-order Taylor series with slope at 2015.0

F

SV-2015-2020-F

GFZ

Swarm A, B, C;

From parent model

USTHB/EOST

observatory hourly means

evaluated and averaged SV from 2013.5 to 2014.5

G

SV-2015-2020-G

NASA

Geodynamo simulation and assimilation from CALS3K.2,

UMBC

gufm1, CM4, CHAOS-4+; average SV from 2015.0 to 2020.0

H

SV-2015-2020-H

IPGP

Swarm A, B, C

Geodynamo simulation and assimilation from Swarm

LPG Nantes

evaluated and averaged SV from 2015.0 to 2020.0

I

SV-2015-2020-I

LPG Nantes

Swarm A and C

From parent model

CNES

Nov-2013 to Sep-2014

first-order Taylor series with slope at 2014.3