BASCOE Analyses Produced in the Framework of the GSE-PROMOTE

Introduction

BASCOE (The Belgian Assimilation System for Chemical Observations from Envisat) takes part in two PROMOTE services: The Stratospheric Ozone Profile Record service and the Stratospheric Aerosols and Gas (H₂O, CH₄) service. In the first service, BASCOE will provide ozone (O3) analyses and other chemical constituents related to ozone based on assimilation of UARS MLS (data assimilated between 1992 and 1999) and Envisat MIPAS (data assimilated between july 2002 and march 2004). In the second service, BASCOE will provide methane (CH4) and water vapor (H2O) from UARS MLS (data assimilated between 1992 and mid 1993) and Envisat MIPAS (data assimilated between july 2002 and march 2004).

In the below Archives section, you will find the links to the already available different products. Products are stored in HDF format. In Documentation, you will find information about each product, including plots of differences between BASCOE and observations (assimilated and independent), reading Matlab and IDL routines to help the user to access the data, PROMOTE validation document, etc. In Background Information, BASCOE system is described and references are given. Finally, contact information and disclamer are given and the end of this page.

Example of results

Time series of POAM-III averaged over two days for ozone at South Pole (top) and the corresponding BASCOE ozone analyses at POAM-III (bottom) in [molec/cm3].

Archives

ML Analyses:

• O₃ : BASCOE Analyses of Envisat/MIPAS (July 2002 - March 2004)
• H₂O, CH₄ : BASCOE Analyses of Envisat/MIPAS (29 Augustus 2003 - 29 September 2003)

MLS Analyses:

• O₃ : BASCOE Analyses of UARS/MLS (1992-1999)

Documentation

MIPAS O3 Analyses:

• Analyses versus Observations
• Reference: Errera, Q., Daerden, F., Chabrillat, S., Lambert, J. C., Lahoz, W. A., Viscardy, S., Bonjean, S., Fonteyn, D., 4D-Var Assimilation of MIPAS chemical observations: ozone and nitrogen dioxide analyses, Atm. Chem. Phys., 8, 6169-6187 (2008).

MIPAS H₂O Analyses :

• Analyses versus Observations
• Reference: Thornton, H. E., Jackson, D.R., Bekki, S., Bormann, N., Errera, Q., Geer, A., Lahoz, W.A. and Rharmili, S., The ASSET humidity comparison, submitted to Atm. Chem. Phys. Disc.

MIPAS CH₄ Analyses :

• Analyses versus Observations

MLS O3 Analyses :

• Analyses versus Observations

Background information

• Review of stratospheric constituent assimilation: Lahoz, W. A., Errera, Q., Swinbank, R., and Fonteyn, D.: Data assimilation of stratospheric constituents: a review, Atmospheric Chemistry and Physics, 7, 5745-5773, 2007.
• 4D-Var chemical data assimilation: Errera, Q. and D. Fonteyn: Four-dimensional variational chemical assimilation of CRISTA stratospheric measurements, J. Geophys. Res., 106, 12,253-12,265, 2001.
• The Antarctic ozone hole monitored from space, by DLR, KNMI and ACRI
• Monitoring the ozone layer from space by DLR, KNMI and ACRI
• Stratospheric Ozone: An Electronic Textbook, NASA Goddard Space Flight Center.

Contact details

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