Second Workshop on the
 Atmospheric Chemistry Validation of ENVISAT
(ACVE-2)

Frascati, Italy

3 – 7 May, 2004

 

Organised by the European Space Agency (ESA)

Directorate of Earth Observation Programmes

 

 

 

 

The Directorate of Earth Observation Programmes of the European Space Agency organised the second workshop on the Atmospheric Chemistry Validation of ENVISAT. The workshop was held from May 3^rd to May 7^th, 2004, at ESA’s European Space Research Institute (ESRIN) in Frascati, Italy.

Purpose

Following the recommendations given at the Envisat Validation Workshop and responding to the need for the subgroups of the ACVT to have a meeting to discuss the results of the correlative data acquisitions and analysis and to derive the current status of the operational atmospheric chemistry products including refining the error bars, the (second) workshop on Atmospheric Chemistry Validation of Envisat (ACVE-2) has been held in May 2004. A third ACVE workshop is expected to take place in 2005. These meetings are primarily intended for the participants of the ENVISAT Atmospheric Chemistry Validation Programme.

Program Structure

The workshop was organised around plenary sessions with invited presentations and a poster session. The short (10-15 minutes) oral presentations by the instrument species-coordinators were scheduled on Monday afternoon, Tuesday, Wednesday morning and Thursday to discuss on instrument by instrument and species by species basis the validation results, to reassess the quality of the data products and to refine the error bars for the products.

 

It was mandatory that all the validation results presented were based on the reprocessed Cal/Val dataset released to the PI’s in early 2004.

 

The program concluded with a summary of the results on Friday morning. A poster session was held on Wednesday afternoon intended for the individual presentations of the validation results of all the participants of the ENVISAT Atmospheric Chemistry Validation Programme.

Validation Species

The geophysical parameters indicated in black in the table below and reprocessed with the processor version given, were expected to be of sufficient quality to be validated by the validation teams and to be assessed during the workshop. For the species indicated in red not enough reprocessed data was available or the operational algorithms for the retrieval were not mature enough for validation, although preliminary results of a number of these species have been presented. For GOMOS only the dark limb measurements were of sufficient quality at the time of the workshop.

 

 

GOMOS	MIPAS	MIPAS	SCIAMACHY			SCIAMACHY			SCIAMACHY
GOPR 6.0	IPF 4.61	IPF4.61	IPF 5.01
GOM_NL_2P	MIP_NL_2P	MIP_NL_2P	SCI_NL_2P			SCI_OL_2P			SCI_OL_2P
Dark Limb	NRT	Offline	Nadir			Nadir			Limb
			UV/Vis	IR	UV-IR	UV/Vis	IR	UV-IR	UV/Vis	IR	UV-IR
density	P	P								p
T	T	T								T
O2
O3	O3	O3	O3			O3			O3
H2O	H2O	H2O		H2O			H2O			H2O
NO2	NO2	NO2	NO2			NO2			NO2
	N2O	N2O		N2O			N2O			N2O †
NO3
	HNO3	HNO3
OclO			OClO*			OClO*
			BrO* †			BrO			BrO †
			H2CO*			H2CO*
				CO			CO			CO †
	CH4	CH4		CH4**			CH4			CH4
			SO2*			SO2*
					Cloud cover frac.			Cloud cover frac.
					Cloud top height			Cloud top height
Aerosol					Aerosol abs. Index			Aerosol abs. Index			Aerosol abs. index
						UV index †
							CO2			CO2

 

 

 

Species-coordinators

The species-coordinators were requested to present, within the allocated time, validation results for operational (NRT and OL) products, provided that the status of these products allowed meaningful comparisons. For products where the status of the operational products did not allow the validation to start, the coordinators were requested to present some results of non-operational product validation to reflect the status of the development process. The species-coordinators have contacted the different validation teams for their inputs. The validation teams were requested to disseminate their results to the respective species-coordinator.

 

Program and presentations

	ACVT subgroup	Presenter	Presentation
Monday 3 May 2004
Session: Introduction
Workshop Introduction		H. Laur / P. Snoeij	ACVE-2_GEN01
Session: SCIAMACHY 1 Chairmen: John Burrows
Ground Segment Status		R. Koopman	ACVE-2_SCIA01
Instrument Status		C. Chlebek	ACVE-2_SCIA02
L1 Changes		J. Frerick	ACVE-2_SCIA03
L1 Validation		G. Lichtenberg	ACVE-2_SCIA04
L2 Changes		A. von Bargen	ACVE-2_SCIA05
Ozone Column	GBMCD	J-C. Lambert	ACVE-2_SCIA06
Ozone Column	SI	E. Hilsenrath	ACVE-2_SCIA07
Ozone Column	MA	H. Eskes	ACVE-2_SCIA08
NO2 Column		J-C. Lambert	ACVE-2_SCIA09
Clouds		P. Stammes	ACVE-2_SCIA10
Aerosols		W. von Hoyningen	ACVE-2_SCIA11
Tuesday 4 May 2004
Session: SCIAMACHY 2 Chairmen: Hennie Kelder
BrO Column		M.van Roozendael	ACVE-2_SCIA12
OClO Column		T. Wagner	ACVE-2_SCIA13
SO2 Column		K. Bramstedt	ACVE-2_SCIA14
CO, CH4, N2O Column	GBMCD	M. De Maziere	ACVE-2_SCIA15
CO, CH4, N2O Column	ESABC	C. Camy-Peyret	ACVE-2_SCIA16
CO, CH4, N20 Column	MASI	A. Gloudemans	ACVE-2_SCIA17
H20 Column		R. Timmermans	ACVE-2_SCIA18
BrO Profile		K. Pfeilsticker	ACVE-2_SCIA19
O3 Profile		E. Brinksma	ACVE-2_SCIA20
NO2 Profile		C. von Savigny	ACVE-2_SCIA21
Conclusions L1		H. Kelder	ACVE-2_SCIA22
Conclusions L2		H. Kelder	ACVE-2_SCIA23
Tuesday 4 May 2004
Session: MIPAS 1 Chairmen: Herbert Fisher
Introduction		R. Koopman	ACVE-2_MIP01
L1 Changes		G. Perron	ACVE-2_MIP02
L2 Changes		B. Carli	ACVE-2_MIP03
Ozone	ESABC	U. Cortesi	ACVE-2_MIP04
Ozone	GBMCD	T. Blumenstock	ACVE-2_MIP05
Ozone	MA	D. Fonteyn	ACVE-2_MIP06
Ozone	SI	B. Kerridge	ACVE-2_MIP07
T	ESABC	C. Blom	ACVE-2_MIP08
T	GMBMCD	K.Fricke	ACVE-2_MIP09
T	MASI	A. Dethof	ACVE-2_MIP10
Wednesday 5 May 2004
Session: MIPAS 2 Chairmen: Bruno Carli
H2O	ESABC	H. Oelhaf	ACVE-2_MIP11
H20	GBMCD	G. Pappalardo	ACVE-2_MIP12
H20	MA	W. Lahoz	ACVE-2_MIP13
H20	SI	M. Weber	ACVE-2_MIP14
NO2		G. Wetzel	ACVE-2_MIP15
N20		C. Camy-Peyret	ACVE-2_MIP16
HNO3		H. Oelhaf	ACVE-2_MIP17
CH4		C. Camy-Peyret	ACVE-2_MIP18
Conclusions		B. Carli/H. Fischer
Wednesday 5 May 2004
Poster Session & BEAT Demonstrations
Thursday 6 May 2004
Session: GOMOS 1 Chairmen: Didier Fussen
Introduction		R. Koopman	ACVE-2_GOM01
L1 Changes		G. Barrot	ACVE-2_GOM02
L2 Changes		O. Fanton d’Andon	ACVE-2_GOM03
Ozone	ESABC	J-B. Renard	ACVE-2_GOM04
Ozone	GBMCD	Y. Meijer	ACVE-2_GOM05
Ozone	MA	B. Theodore	ACVE-2_GOM06
Ozone	SI	W.P. Chu	ACVE-2_GOM07
T and Density	ESABC	J-B. Renard	ACVE-2_GOM08
T and Density	GBMCD	G. Hansen	ACVE-2_GOM09
T and Density	MASI	F. Goutail	ACVE-2_GOM10
Thursday 6 May 2004
Session: GOMOS 2	Chairmen: Jean-Loup Bertaux
H20	ESABC	J-B. Renard	ACVE-2_GOM11
H20	GBMCD	T. Suortti	ACVE-2_GOM12
H20	MASI	F. Goutail	ACVE-2_GOM13
NO2		J-B Renard	ACVE-2_GOM14
NO3		J-B Renard	ACVE-2_GOM15
OClO		J-B Renard	ACVE-2_GOM16
Aerosol		J-B Renard	ACVE-2_GOM17
Conclusions		D. Fussen / J-L. Bertaux
Friday 7 May 2004
Summary & Closing Session Chairmen: Paul Snoeij
Summary SCIAMACHY		H. Kelder	ACVE-2_GEN02
Summary GOMOS		D. Fussen and J-L. Bertaux	ACVE-2_GEN031 ACVE-2_GEN032
Summary MIPAS		H. Fischer	ACVE-2_GEN04
Closing Remarks		P. Lecomte / P. Snoeij	ACVE-2_GEN05

 

 

Organising Committee

Evert Attema	ESA/ESTEC
Yolanda Spaans	ESA/ESTEC
Rob Koopman	ESA/ESRIN
Paul Snoeij	ESA/ESTEC
Patrick Wursteisen	ESA/ESTEC
Claus Zehner	ESA/ESRIN