WP4: African Emissions M. Van Roozendael, C. Fayt, C. Hermans, G. Pinardi, C. Gielen, F. Hendrick, I. De Smedt BIRA-IASB Prof. Pierre Nzohabonayo, Rachel.

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Presentation transcript:

WP4: African Emissions M. Van Roozendael, C. Fayt, C. Hermans, G. Pinardi, C. Gielen, F. Hendrick, I. De Smedt BIRA-IASB Prof. Pierre Nzohabonayo, Rachel Akimana, Eugène Nzendako Université du Burundi AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec. 2013

AGACC-II Tasks in WP 4 WP4: African emissions  4.1. Install MAXDOAS instrument in Burundi (Bujumbura)  4.2. Analyse the data for trace gases (NO 2, O 3, HCHO, glyoxal, SO 2, BrO, H 2 O) and aerosols  4.3. Study transport of biomass burning plumes, and link with measurements at Reunion Island AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec. 2013

OMI/AURA HCHO, , 01:30 pm DJF MAM JJA SON

Activities in 2013 AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec Training of Eugène Nzendako (until Feb. 2013) Finalisation and initial calibration of MAXDOAS instrument (until late April 2013) Participation to MADCAT international campaign in Mainz (Germany) for testing and validation of MAXDOAS system (June 2013) Bujumbura (3°S, 30°E) Fixing of instrumental problem (Jul-Sep 2013) Final calibration, organisation of transfer to Bujumbura (Oct 2013) Installation: Nov 2013

Project status 1 year ago (AGACC-II PM2) AGACC II Kick-off Meeting, BIRA-IASB, 29 Sep  Visit of M. Van Roozendael and C. Hermans in May 2012  identification of suitable location for installation and discussion of critical issues regarding operation and maintenance of instrument  Supporting infrastructure in preparation (security, power, internet connection, etc). A dedicated room is being build to host the instrument.  Training of local people  ongoing at BIRA (Eugène) MAXDOAS

Installation of MAXDOAS and CIMEL systems AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec MAXDOAS and CIMEL sunphotometer installed at University of Bujumbura in November 2013 Both systems operational since 25 Nov 2013 Daily data transfer using dedicated internet line (but still part of University network) CIMEL MAXDOAS BIRA room

AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec Functional drawing of the Bujumbura installation C. Fayt, 2013

Data acquisition, transfer and processing AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec Sequences of measurements fully automated –Control of the different devices (sun tracker, filter wheel, CCD) –Sequence of measurements (different elevation angles, dark currents) –Automatic adjustment of the integration time –Remote control possible in case a problem is detected (VNC) Data are downloaded daily by ftp and raw data are stored at BIRA for further processing Automated processing chain operational Rapid control of the quality of the results through a local web page

First results – spectral fits AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec  The instrument performs nominally. NO 2, HCHO, O 3, H 2 O, O 4 … spectral signatures are detected with high S/N ratio according to specifications.

First results – slant columns AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec  The instrument performs nominally. NO 2, HCHO, O 3, H 2 O, O 4 … spectral signatures are detected with high S/N ratio according to specifications. Thick clouds & rain HCHO NO 2 O4O4

First inversions for NO 2, HCHO and aerosols AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec Preliminary – no cloud filtering applied yet

Comparison with satellite data (HCHO) AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec OMI HCHO VCD DJF HCHO columns roughly consistent for GOME-2 (09:30 am) and OMI (01:30)  no diurnal variation? Inter-sensor consistency seems to degrade with time? Small but significant seasonal variation What can we learn from MAXDOAS?

Comparison with satellite data (HCHO) AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec. 2013

Comparison with satellite data (HCHO) AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec Model profiles used in satellite retrievals MAXDOAS profiles

Comparison with satellite data (HCHO) AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec. 2013

Comparison with satellite data (HCHO) AGACC-II Third Progress Meeting, BIRA-IASB, 18 Dec. 2013

Outlook AGACC II Kick-off Meeting, BIRA-IASB, 29 Sep Continued data acquisition and processing of MAXDOAS and CIMEL sunphotometer data throughout 2014 (and later) Continued data exploitation for NO 2, HCHO, glyoxal, O 3, BrO, aerosols Satellite validation Dispersion modelling Look for PhD support for a scientist in Bujumbura Thank you to all our colleagues from the University of Burundi !