the esa frm4doas projectfrm4doas.aeronomie.be/projectdir/2nd-cindi2-ws/frm4doas_hendrick...belgisch...

BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERONOMIE SPATIALE DE BELGIQUE BELGIAN INSTITUTE OF SPACE AERONOMY BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERONOMIE SPATIALE DE BELGIQUE BELGIAN INSTITUTE OF SPACE AERONOMY BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERO

The ESA FRM4DOAS project

F. Hendrick (BIRA-IASB) and the FRM4DOAS team

Fiducial Reference Measurements for Ground-Based DOAS Air-Quality Observations


FRM4DOAS main objectives

• Latency: 6-24h • Open source code

Further harmonising MAXDOAS systems and data sets

+ Establishment

of links with

other UV-visible

networks, like

e.g. Pandonia

Partners:

• BIRA (Lead)

• IUP-Bremen

• IUP-Heidelberg

• MPIC

• KNMI

• BKScientific


Demonstration stations

• Demonstration of the NRT processing system on measurements at a selection of 11 MAXDOAS stations:

Location Lat (°N) Long (°E) Alt (m) a.s.l

Owner

Ny-Alesund, Norway 79 12 15 IUPUB

Bremen, Germany 53 9 50 IUPUB

Cabauw, The Netherlands 52 5 0 KNMI

Uccle, Belgium 51 4 104 BIRA

Mainz, Germany 50 8 50 MPIC

Heidelberg, Germany 49 8 115 UHEID

Xianghe, China 40 116 178 BIRA/ IAP-CAS

Athens, Greece 38 24 300 IUPUB

Bujumbura, Burundi -3 29 820 BIRA

Lauder, New-Zealand -45 170 370 NIWA

Neumayer -71 -8 50 UHEID

+ CINDI-2 spectra

2nd CINDI-2 Workshop , Mutters, Austria, 14-15 March 2018 3


(MAX-)DOAS Best Practices

Assessment • Based on past and current EU ‘harmonisation’ projects (GeoMon, NORS,

QA4ECV) and MAX-DOAS intercomparison campaigns like CINDI-1 (Cabauw, 2009), MADCAT (Mainz, 2013), and CINDI-2 (Cabauw, 2016)

• MAX-DOAS Calibration and Operation Best Practices Document (Jan 2018):

Horizon scan intensity measurements for daily checking of telescope alignement

Maximum of the intensity derivative versus elevation indicates the centre of the field of view



FRM4DOAS instrument operation and

calibration guidelines


Network and instruments review

+ CINDI-2 data

FRM4DOAS demonstration network

Potential FRM4DOAS operational network

Network and instruments review through a dedicated

questionnaire:

http://frm4doas.aeronomie.be/index.php/frm4doas-questionnaire

(21 groups)


FRM4DOAS Round-Robin exercise

Target species: Aerosols @ 360 and 477 nm, HCHO, NO2

Creation of a synthetic dSCD reference dataset for different atmospheric scenarios (9 trace gas profiles and 11 aerosol profiles) and viewing geometries (~4000 retrieved profiles)

Participant Method Algorithm name Forward

Model

BIRA-IASB OEM bePro LIDORT

BIRA-IASB OEM MMF LIDORT

IUPUB OEM Boreas SCIATRAN

IUPHD OEM HEIPRO SCIATRAN

KNMI Parametrised DAK

MPIC Parametrised MAPA MC, LM McArtim

MPIC OEM Priam SCIATRAN

NASA Quicklook N/A

Parameterisation Optimal Estimation

Retrieval strategy


Round-Robin results

− True value ■ 25-75% percentile 5-95% percentile x Median … Mean

Numerical performance

Performance matrix – Ranking based on the difference between retrieved and true parameter values

0

1

2

3

4

5

6

7

8

9

Tropospheric NO2 VCD Trace gas profile scenarios:


Twilight zenith-sky products

• No Round-Robin selection for the total O3 column and stratospheric NO2 profile retrieval tools, given their much higher level of maturity

• Instead, review of the existing community consensus on the retrieval methods and settings

Stratospheric NO2 vertical profiles: Total O3 vertical column densities:

BIRA OEM-based profiling tool

(Hendrick et al., ACP, 2004)

OEM )(

)()(

AMF

RCDDSCDVCD

Standard NDACC approach based on AMF LUTs (see http://ndacc-uvvis-wg.aeronomie.be)

http://ndacc-uvvis-wg.aeronomie.be/








QDOAS spectral fitting S/W

• Centralised QDOAS processing of CINDI-2 radiance spectra as test for FRM4DOAS slant column processing unit:

CINDI-2 Central QDOAS reprocessing

Clear improvement of the overall homogeneity

CINDI-2 semi-blind analysis


Processing System architecture

• Event-driven approach using asynchronous modules and trigger lists; it offers a high level of modularity and flexibility for further extensions and major updates (e.g., new profiling tools, new LUTs, additional trace gas species and stations,…)


• Traceability (log files)

• QC


QA/QC report visualisation interface


Concluding remarks

FRM4DOAS is a free-of-charge systematic Level 1 (radiance spectra) to Level 2 (vertical columns and profiles) NRT MAXDOAS processing service using state-of-the-art community algorithms and operation guidelines

First beta version of the system expected for May 2018; final validated version for November 2018 at the latest

Continuous feedback from potential future users is important, especially regarding operation and calibration guidelines, spectra file format, etc

More information available at http://frm4doas.aeronomie.be



Thank you for your attention !

The FRM4DOAS team:

• BIRA-IASB (Lead): M. Van Roozendael, F. Hendrick, C. Fayt, and M. Friedrich

• IUP-Bremen: A. Richter, T. Bösch

• IUP-Heidelberg: U. Friess, L. Tirpitz

• MPIC: T. Wagner, S. Beirle, Y. Wang, S. Dörner

• KNMI: A. Piters

• BKScientific: K. Kreher

• ESA: J. von Bismarck, A. Dehn, S. Casadio, and T. Fehr

• External partners: A. Cede (LuftBlick) and E. Spinei (NASA)



Back-up


QA/QC report visualisation interface (2)


QDOAS reprocessing

S5PVT Workshop, ESA/ESTEC, 5 February 2018 18

Semi-blind analysis Central reprocessing

Median reference dSCD (x1015 molec/cm2)

Gro

up

_# d

SCD

(x1

01

5 m

ole

c/cm

2)


FRM4DOAS objectives Fiducial Reference Measurements for Ground-Based DOAS Air-Quality Observations

• 2-year ESA project started in July 2016

• Objectives:

Further harmonising MAXDOAS systems and data sets through:

1. Specification of best practices for instrument operation

2. Development and demonstration of a first near-real-time centralised Processing System for MAXDOAS measurements to be operated within NDACC

3. Establishment of links with other UV-visible networks, e.g. Pandonia

4. Support to the preparation of the CINDI-2 campaign

To be a key contributor in the operational validation of atmospheric composition satellite missions (S5P, S4 & 5)

• Partners: BIRA-IASB (lead), IUP-Bremen, IUP-Heidelberg, MPIC, KNMI, and BKScientific

2nd CINDi-2 Workshop , Mutters, Austria, 14-15 March 2018 19


FRM4DOAS RR telecon, 12.07.2017 20

• 21 groups have returned their filled questionnaire:

From Europe (12)

1. Royal Dutch Meteorological Institute (KNMI), De Bilt, The Netherlands

2. Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece

3. Belarus State University (BSU), Minsk, Belarus

4. Royal Belgian Institute for Space Aeronomy (BIRA), Brussels, Belgium

5. Spanish Research Council (CSIC), Madrid, Spain

6. Instituto Nacional de Técnica Aeroespacial (INTA), Madrid, Spain

7. University of Bremen (IUPB), Bremen, Germany

8. University of Heidelberg (IUPH), Heidelberg, Germany

9. Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Guyancourt,

France

10. Ludwig-Maximilians Universität (LMU), München, Germany

11. Max Planck Institute for Chemistry (MPIC), Mainz, germany

12. University of Evora (UEVORA), Evora, Portugal - Institute of Atmospheric Sciences

and Climate (ISAC-CNR), Bologna, Italy

Status (November 2017)


• 21 groups have returned their filled questionnaire (cont’d):

From Asia (3)

13. Anhui Institute of Optical and Fine Mechanics (AIOFM), Hefei, China

14. Chinese Meteorological Administration (CMA), Beijing, China

15. Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan

From America (3)

19. Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico

20. University of Toronto, Toronto, Canada

21. Environment Canada

From South Pacific (3)

16. Bureau of Meteorology (BOM), Melbourne, Australia

17. University of Melbourne, Melbourne, Australia

18. NIWA, Lauder, New Zealand

Status (November 2017)


Potential FRM4DOAS network (Nov. 2017)

Group Station # Country Lat (°) Long (°) Geometry Type NDACC-affiliated

AIOFM (Hefei, China)

Hefei 1 China 31.9 117.17 MAXDOAS RG-MB no

Shanghai 2 China 31.19 121.45 MAXDOAS RG-MB no

KNMI (De Bilt, The netherlands) DeBilt 3 The Netherlands 52.101 5.178 MAXDOAS MiniDOAS Hoffmann no

AUTH (Thessaloniki, Greece) Thessaloniki Campus 4 Greece 40.634 22.956 MAXDOAS MiniDOAS-CB no

Thessaloniki CIRI 5 Greece 40.560 22.997 MAXDOAS MiniDOAS-CB no

BOM (Melbourne, Australia) Broadmeadows 6 Australia -37.69 144.95 MAXDOAS EnviMes no

BSU (Minsk, Belarus) Minsk 7 Belarus 53.837 27.476 MAXDOAS RG-CB no

BIRA (Brussels, Belgium) Xianghe 8 China 39.754 116.961 MAXDOAS RG-CB yes

Uccle 9 Belgium 50.8 4.35 MAXDOAS RG-CB no

Jungfraujoch 10 Swiss 46.55 7.98 MAXDOAS RG-CB yes

Le Port 11 Reunion Island (Fr) -20.93 55.28 MAXDOAS RG-CB no

Bujumbura 12 Burundi -3.38 29.38 MAXDOAS RG-CB yes

Harestua 13 Norway 60.22 10.75 ZenithSky RG-CB yes

CMA (Beijing, China) Beijing CMA 14 China 39.95 116.32 MAXDOAS MiniDOAS Hoffmann no

Beijing Nanjiao 15 China 39.848 116.494 MAXDOAS MiniDOAS Hoffmann no

CSIC (Madrid, Spain) Madrid 16 Spain 40.3 -3.7 MAXDOAS RG-CB no

INTA (Madrid, Spain) Izaña 17 Spain 28.309 -16.499 MAXDOAS RG-CB yes

Torrejón de Ardoz 18 Spain 40.48 -3.47 MAXDOAS RG-CB no

El Arenosillo 19 Spain 28.3 -16.78 MAXDOAS RG-CB no

Ushuaia 20 Argentina -54.8 -68.28 MAXDOAS RG-CB yes

Marambio 21 Antarctica -64.27 -56.7 MAXDOAS RG-CB yes

Belgrano 22 Antarctica -77.87 -34.62 MAXDOAS RG-CB yes

IUPB (Bremen, Germany) Bremen 23 Germany 53 9 MAXDOAS RG-CB yes

Ny-Alesund 24 Svalbard 79 10 MAXDOAS RG-CB yes

Athens 25 Greece 38.05 23.86 MAXDOAS RG-CB no

IUPH (Heidelberg, Germany) Arrival Heights 26 Antartica -77.83 166.65 MAXDOAS RG-CB no

Neumayer 27 Antartica -70.69 -8.27 MAXDOAS RG-CB yes

Hohenpeissenberg 28 Germany 47.8 11.01 MAXDOAS RG-CB no

Heidelberg 29 Germany 49.42 8.67 MAXDOAS EnviMes no

JAMSTEC (Yokohama, Japan) Yokosuka 30 Japan 35.32 139.65 MAXDOAS MiniDOAS-CB no

Fukue 31 Japan 32.75 128.68 MAXDOAS MiniDOAS-CB no

RG: Research grade/MB: Manufacturer-built/CB: Custom-built

BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERONOMIE SPATIALE DE BELGIQUE BELGIAN INSTITUTE OF SPACE AERONOMY BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERONOMIE SPATIALE DE BELGIQUE BELGIAN INSTITUTE OF SPACE AERONOMY BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERO Group Station # Country Lat (°) Long (°) Geometry Type NDACC-affiliated

LATMOS (Guyancourt, France) ScoresbySund 32 Groenland 71 -22 ZenithSky SAOZ yes

Sodankyla 33 Finland 67 27 ZenithSky SAOZ yes

Zhigansk 34 Russia 67 123 ZenithSky SAOZ yes

Salekhard 35 Russia 67 37 ZenithSky SAOZ yes

OHP 36 France 43.94 5.71 ZenithSky SAOZ yes

Bauru 37 Brezil -22 -49 ZenithSky SAOZ yes

Reunion 38 Reunion Island (Fr) -21 55 ZenithSky SAOZ yes

Kerguelen 39 Antartic -49 70 ZenithSky SAOZ yes

Rio Gallegos 40 Argentina -51.6 -69.32 ZenithSky SAOZ yes

Dumont D'Urville 41 Antarctica -67 140 ZenithSky SAOZ yes

Concordia 42 Antarctica -75.103 123.312 ZenithSky SAOZ yes

LMU (Munich, Germany) Munich LMU 43 Germany 48.148 11.573 MAXDOAS EnviMes no

MPIC (Mainz, Germany) Mainz 44 Germany 50 8.27 MAXDOAS RG-CB no

NIWA (Lauder, new Zealand) Lauder 45 New Zealand -45 170 MAXDOAS RG-CB yes

Lauder 46 New Zealand -45 170 MAXDOAS RG-CB yes

UEVORA/ISAC-CNR (Evora, Portugal/ Bologna, Italy)

Evora 47 Portugal 38.56 -7.91 MAXDOAS RG-CB no

Monte Cimone 48 Italy 44.11 10.42 MAXDOAS RG-CB no

Lecce 49 Italy 40.33 18.12 MAXDOAS RG-CB no

Mario Zucchelli Station 50 Antarctica -74.69 164.12 MAXDOAS RG-CB no

Bologna 51 Italy 44.52 11.42 MAXDOAS RG-CB no

UNAM (Mexico City, Mexico) UNAM 52 Mexico 19.33 -99.18 MAXDOAS RG-CB no

Acatlán 53 Mexico 19.48 -99.24 MAXDOAS RG-CB no

Vallejo 54 Mexico 19.48 -99.15 MAXDOAS RG-CB no

Cuautitlãn 55 Mexico 19.71 -99.20 MAXDOAS RG-CB no

Univerisity of Melbourne (Melbourne, Australia)

Melbourne 56 Canada 40.0 145.0 MAXDOAS EnviMes no

UTORONTO (Toronto, Canada)

Eureka - PEARL 57 Canada 80.05 -86.42 MAXDOAS RG-CB yes

Eureka - UT 58 Canada 80.05 -86.42 MAXDOAS RG-CB yes

Environment Canada (Toronto, Canada)

Toronto 59 Canada 43.78 -79.47 MAXDOAS EnviMes no

Egbert 60 Canada 44.23 -79.78 MAXDOAS EnviMes no

Fort McKay 61 Canada 57.18 -111.64 MAXDOAS EnviMes no

RG: Research grade/MB: Manufacturer-built/CB: Custom-built

Potential FRM4DOAS network (Nov. 2017)

the esa frm4doas projectfrm4doas.aeronomie.be/projectdir/2nd-cindi2-ws/frm4doas_hendrick...belgisch...

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