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Research Article

Table 1

Data used in the construction DTM2020 (ρ is total density), and assessment of the CIRA models.

Measurement Period Used in DTM2020
CHAMP ρ 01/2001 – 09/2010 Operational, research
GRACE ρ 08/2002 – 12/2016 Operational, research
GOCE ρ 11/2009 – 11/2013 Operational, research
Swarm A ρ 11/2013 – 02/2016 Operational, research
Stella ρ 01/2000 – 12/2019 Operational, research
Starlette ρ 01/2000 – 12/2016 No
TLE 250/325 km ρ 01/1967 – 08/2013 Operational, research*
HASDM database ρ 01/2000 – 12/2019 No
SETA2 ρ 05/1982 – 11/1982 No
SETA3 ρ 07/1983 – 03/1984 No
AE-C MESA ρ 12/1973 – 09/1976 No
AE-E MESA ρ 12/1975 – 01/1978 No
DE-2** T, He, O, N2 08/1981 – 02/1983 Operational
AE-C N2 01/1974 – 04/1977 Operational
AE-E T, O 12/1975 – 05/1981 Operational
EDR ρ 1/2000 – 12/2010 No
SUSIM*** O2 10/1991 – 2/2005 Operational
*

2000–2013;

**

Dynamics Explorer;

***

Solar Ultraviolet Spectral Irradiance Monitor.

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