Towards the use of conservative thermodynamic variables in data assimilation: a case study using ground-based microwave radiometer measurements

Marquet, Pascal; Martinet, Pauline; Mahfouf, Jean-François; Barbu, Alina Lavinia; Ménétrier, Benjamin

doi:https://doi.org/10.5194/amt-15-2021-2022

Articles | Volume 15, issue 7

https://doi.org/10.5194/amt-15-2021-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-15-2021-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 7

Research article

|

05 Apr 2022

Research article |

| 05 Apr 2022

Towards the use of conservative thermodynamic variables in data assimilation: a case study using ground-based microwave radiometer measurements

Pascal Marquet, Pauline Martinet, Jean-François Mahfouf, Alina Lavinia Barbu, and Benjamin Ménétrier

Data sets

SOFOG3D_CHARBONNIERE_CNRM_MWR-HATPRO-TB_L1 P. Martinet https://doi.org/10.25326/148

SOFOG3D_CHARBONNIERE_LATMOS_BASTA-vertical-12m5_L1 J. Delanoë https://doi.org/10.25326/155

Model code and software

JCSDA/saber: 1.1.3 B. Ménétrier, M. Abdi-Oskouei, M. J. Olah, Y. Trémolet, T. Sluka, D. Davies, D. Holdaway, T. Kinami, A. Shlyaeva, C. Gas, R. Mahajan, R. Honeyager, W. Śmigaj, and B.-J. Jung https://doi.org/10.5281/zenodo.6400454

RTTOV-gb D. Cimini, J. Hocking, F. De Angelis, A. Cersosimo, F. Di Paola, D. Gallucci, S. Gentile, E. Geraldi, S. Larosa, S. Nilo, F. Romano, E. Ricciardelli, E. Ripepi, M. Viggiano, L. Luini, C. Riva, F. S. Marzano, P. Martinet, Y. Y. Song, M. H. Ahn, and P. W. Rosenkranz http://cetemps.aquila.infn.it/rttovgb/rttovgb.html

RTTOV-gb NWP SAF https://nwp-saf.eumetsat.int/site/software/rttov-gb/

1D-Var NWP SAF https://nwp-saf.eumetsat.int/site/software/1d-var/

Short summary

Two conservative thermodynamic variables (moist-air entropy potential temperature and total water content) are introduced into a one-dimensional EnVar data assimilation system to demonstrate their benefit for future operational assimilation schemes, with the use of microwave brightness temperatures from a ground-based radiometer installed during the field campaign SOFGO3D. Results show that the brightness temperatures analysed with the new variables are improved, including the liquid water.