Overview of chemical reanalyses

Copernicus Atmosphere Monitoring Service reanalysis (CAMSRA)

Period: 2003–

Assimilated observations:

• OMI, SCIAMACHY, GOME-2 NO2
• MOPITT CO
• SCIAMACHY, MIPAS, MLS, OMI, GOME-2, SBUV/2

Assimilation system:

Other assimilated observations: Meteorology (as in ERA5)

Online dynamic: Yes

Interactive chemistry: Yes

Grid spacing: T255 (80 km)

Assimilation window: 3h

Dataset location: https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-reanalysis-eac4?tab=form

References: Inness, A., Ades, M., Agustí-Panareda, A., Barré, J., Benedictow, A., Blechschmidt, A.-M., Dominguez, J. J., Engelen, R., Eskes, H., Flemming, J., Huijnen, V., Jones, L., Kipling, Z., Massart, S., Parrington, M., Peuch, V.-H., Razinger, M., Remy, S., Schulz, M., and Suttie, M.: The CAMS reanalysis of atmospheric composition, Atmos. Chem. Phys., 19, 3515–3556, https://doi.org/10.5194/acp-19-3515-2019, 2019.

Tropospheric Chemistry Reanalysis version 2 (TCR-2)

Period: 2005–2018, updated to 2021.

Assimilated observations:

• OMI, SCIAMACHY, GOME-2 NO2
• MOPITT v7 CO
• TES, MLS O3
• MLS HNO3
• OMI SO2

Assimilation system: MIROC-CHASER, Local Ensemble Transform Kalman Filter (LETKF)

Other assimilated observations: No

Online dynamic: No

Interactive chemistry: Yes

Grid spacing: 1.1°x1.1°

Assimilation window: 2h

Dataset location: https://doi.org/10.25966/9qgv-fe81

References: Miyazaki, K., Bowman, K., Sekiya, T., Eskes, H., Boersma, F., Worden, H., Livesey, N., Payne, V. H., Sudo, K., Kanaya, Y., Takigawa, M., and Ogochi, K.: Updated tropospheric chemistry reanalysis and emission estimates, TCR-2, for 2005–2018, Earth Syst. Sci. Data, 12, 2223–2259, https://doi.org/10.5194/essd-12-2223-2020, 2020.

 

Global atmospheric carbon monoxide budget 2000–2017 inferred from multi-species atmospheric inversions

Period: Inversion #1 (2000–2017); Inversion #2 (2005–2017); Inversion #3 (2010–2017)

Assimilated observations:

Inversion #1

• MOPITTv7 CO total column

Inversion #2

• MOPITTv7 CO total column
• OMI v3 HCHO column

Inversion #3

• MOPITTv7 CO total column
• OMI v3 HCHO column
• GOSAT column-averaged dry air mole fractions of CH4 (XCH4)

Assimilation system: MIROC-CHASER, Local Ensemble Transform Kalman Filter (LETKF)

Other assimilated observations: No

Online dynamic: Yes

Interactive chemistry: Yes (Simplified Atmospheric Chemistry assimilation System, SACS)

Grid spacing: 3.75° longitude ×1.9° latitude

Assimilation window: 8d

Dataset location: https://doi.org/10.6084/m9.figshare.c.4454453.v1

References: Zheng, B., Chevallier, F., Yin, Y., Ciais, P., Fortems-Cheiney, A., Deeter, M. N., Parker, R. J., Wang, Y., Worden, H. M., and Zhao, Y.: Global atmospheric carbon monoxide budget 2000–2017 inferred from multi-species atmospheric inversions, Earth Syst. Sci. Data, 11, 1411–1436, https://doi.org/10.5194/essd-11-1411-2019, 2019.

 

NCAR/MOPITT Reanalysis

Period: 2002-2014

Assimilated observations:

• MOPITTv5 CO profiles

Assimilation system: CAM-chem/DART (Data Assimilation Research Testbed)

Other assimilated observations: Yes, conventional meteorological observations

Online dynamic: Yes

Interactive chemistry: Yes

Grid spacing: 2.5° longitude ×1.9° latitude

Assimilation window: 6h

Dataset location: https://rda.ucar.edu/datasets/ds342-0/

References: Gaubert, B., et al.: Toward a chemical reanalysis in a coupled chemistry-climate model: An evaluation of MOPITT CO assimilation and its impact on tropospheric composition, J. Geophys. Res. Atmos., 121, 7310– 7343, https://doi.org/10.1002/2016JD024863, 2016.

 

BASCOE Reanalysis of Aura MLS version 2 (BRAM2)

Period: August 2004–December 2017 (updated to August 2019)

Assimilated observations:

• Microwave Limb Sounder O3, H2O, N2O, HNO3, HCl, ClO, CO and CH3Cl

Assimilation system: Belgian Assimilation System of Chemical ObsErvations (BASCOE)

Other assimilated observations: Yes, conventional meteorological observations

Online dynamic: Yes

Interactive chemistry: Yes

Grid spacing: 3.75° longitude ×2.5° latitude

Assimilation window: 30min

Dataset location:  http://strato.aeronomie.be/index.php/2-uncategorised/6-bram

References: Errera, Q., Chabrillat, S., Christophe, Y., Debosscher, J., Hubert, D., Lahoz, W., Santee, M. L., Shiotani, M., Skachko, S., von Clarmann, T., and Walker, K.: Technical note: Reanalysis of Aura MLS chemical observations, Atmos. Chem. Phys., 19, 13647–13679, https://doi.org/10.5194/acp-19-13647-2019, 2019.