Some Experiences and results from EMEP-Intensive- Measuring-Campaigns at Melpitz site (German...

Some Experiences and results from EMEP-Intensive-Measuring-Campaigns at Melpitz site (German lowlands, Saxony)

Summer 2006 and Winter 2007 – Planned possible measurements for 2008 and 2009

G. Spindler1, L. Poulain1, E. Brüggemann1, T. Gnauk1, A. Grüner1, K. Müller1, Th.M.Tuch3, M.Wallasch2, B. Wehner1, A. Wiedensohler1, H. Herrmann1

EMEP/TFMM workshop: specification of the next intensive measurement campaign and

future plans related to the EMEP monitoring strategy, Dublin 23rd October 2007

1Leibniz-Institute for Tropospheric Research, Permoserstrasse 15, 04318 Leipzig, Germany2UFZ Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany3Umweltbundesamt, Wörlitzer Platz 1, 06844 Dessau, Germany

National contributions to EMEP Database

View from aircraft to the rural Melpitz site

Fotos: BangeSeptember 2001 TU-Braunschweig

N

Klitzschen(village)

Melpitz(village)

measuring field

Evolution of half-hourly PM10-mass concentration and precipitation in winter

(November until April) and summer (May until October) at Melpitz site in the least 14 years. The half yearly precipitation sum is plotted as inverse.

y = 0.04x2 - 1.61x + 38.91

R2 = 0.90 n=14

y = 0.04x2 - 1.76x + 45.25

R2 = 0.49 n=14

0

10

20

30

40

50

60

70

80

90

100m

ass

con

cen

trat

ion

PM

10 [

µg/

m³]

0

100

200

300

400

500

600

700

800

900

1000

pre

cip

itat

ion

su

m [

mm

]

PM10 (winter) PM10 (summer) precipitation sum

Polynomisch (PM10 (summer)) Polynomisch (PM10 (winter))Three years of intensive investigation

Location of the IfT research site in the state of Saxony (Germany) (12°56‘ E, 51°32‘ N, Altitude 86 m above see level)

maritimeair masses

continental air masses

Melpitz

Mean PM1, PM2.5 and PM10 mass concentrations, the concentrations of the main ions (nitrate, sulfate and ammonium) and organic and elemental carbon content (OC and EC) in winter and summer. Only days with air mass transport explicitly from West (blue frame) or from East (green frame) are considered.The error bars are the standard deviation for the particle mass concentration. “n” is the number of days. Averages of three winters (2004/05, 2005/06, 2006/07) and three summers (2005, 2006, 2007) are shown.

Results DIGITEL Sampler

0 5 10 15 20 25 30 35 40 45 50 55 60

PM10

PM2.5

PM1

PM10

PM2.5

PM1

mass concentration [µg/m³]

mass(unidentified)SO42-

NO3-

NH4+

organic carbon

elemental carbon

summer 04, 05, 06

winter 04/05, 05/06, 06/07

n=87

n=300

n=312

n=85

n=315

n=324

0 5 10 15 20 25 30 35 40 45 50 55 60

PM10

PM2.5

PM1

PM10

PM2.5

PM1

mass concentration [µg/m³]

winter 04/05, 05/06, 06/07

summer 04, 05, 06

n=16

n=84

n=83

n=22

n=107

n=107

0

10

20

30

40

50

60

70

80

90

100

04 /

06

05 /

06

06 /

06

07 /

06

08 /

06

09 /

06

10 /

06

11 /

06

12 /

06

01 /

07

02 /

07

03 /

07

04 /

07

time [month]

part

icle

mas

s co

ncen

trat

ion

[µg/

m³] PM10

PM2.5PM1air masses from westair masses from east

Indicator for air mass direction

Time series of daily particle mass concentration PM1, PM2.5 and PM10 (May 2004 until October 2006) with indicator for air mass origin and time-slotsfor the EMEP winter- and summer-campaign (2006 and 2007)

Summer-campaign

Winter-campaign

Meteorological parameters during the EMEP intensive campaigns at Melpitz site

Difference from normal climate (1971-2000) for daily mean temparature

at the Meteorological Institute of the Leipzig University®

-30

-20

-10

0

10

20

30

40

time (days)

Tem

pera

ture

[°C

]

30

40

50

60

70

80

90

100

rela

tive

Hum

idity

[%]

Temperaturerelative Humidity

-30

-20

-10

0

10

20

30

40

time (days)

Tem

pera

ture

[°C

]

30

40

50

60

70

80

90

100

rela

tive

Hum

idity

[%

]

Temperaturerelative Humidity

Temperature and relative Humidity at Melpitz siteJune 2006 January/February 2007

20062007 until April 17

Summer-Intensive-Campaign (1. – 30. June 2006) Day Nr. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

MAAP X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X AMS █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ █ Berner █ X █ █ X █ X █ X █ █ X █ X █ X █ X █ █ X █ X █ X █ X █ X █ GRIMM X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X TDMPS X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

PM10 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X PM2.5 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

DIG PM1 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

Winter-Intensive-Campaign (8. January – 8. February 2007) date 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8

MAAP X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X AMS █ █ █ █ X X X █ █ █ X X X X X X X X X X X X X X X X X X X X X X Berner █ X █ X █ X █ X █ X █ X █ X █ X █ X █ X █ █ █ X █ X █ X █ █ █ X GRIMM X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X TDMPS X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

PM10 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X PM2.5 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

DIG PM1 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

MAAP, Multi Angel Absorption Photometer (Model 5012)TOF-AMS, Particle-Mass-Spectrometer (Aerodyne, USA)Berner, 5-stage-BERNER-type-impactor (mass, water soluble ions, organic and elemental carbon, OC, EC)GRIMM Type ESVC 265, optical detection of PM1, PM2.5 and PM10

TDMPS TDMPS (twin-differential-mobility-particle-sizer) with APS (aerodynamic-particle-sizer) in combination with a thermo-denuder

█ no data X data available For the AMS also data for 9.,10.,11. and 12. February andfor the Berner data also for the 7. February available

Overview of data for the EMEP intensive campaigns at Melpitz site

Summer (1. June – 30. June 2006) Winter (8. January – 8 February 2007)30 days 32 days

PM10 18.91 + 6.30 PM10 16.60 + 7.28

PM2.5 13.98 + 6.14 PM2.5 12.30 + 7.18

PM1 9.97 + 4.29 PM1 7.71 + 4.41

0

5

10

15

20

25

30

35

40

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10

0

5

10

15

20

25

30

35

40

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10

Time series and mean values for Summer- and Winter-campaign. Results from the daily DIGITEL-Samples for PM10, PM2.5 and PM1

Mass-concentration

y = 0.98x

R2 = 0.62

0

5

10

15

20

25

30

35

40

0 5 10 15 20 25 30 35 40PM10 high volume [µg/m³]

PM

10 d

aily

mea

n G

RIM

M [

µg/

m³]

0

10

20

30

40

50

60

70

days in June 2006 (half hourly means)

par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

PM10

PM2.5

PM1

PM10 high volume

Comparison of half-hourly PM10-measurements of an optical device (Type ESVC 265, Fa. GRIMM, Germany)with daily PM10 data from the DIGITEL

June 2006

N=30

y = 0.78x

R2 = 0.78

0

5

10

15

20

25

30

0 5 10 15 20 25 30PM10 high volume [µg/m³]

PM

10 d

aily

mea

n G

RIM

M [

µg/

m³]

0

5

10

15

20

25

30

35

40

days in January/February 2006 (half hourly means)

par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]PM10

PM2.5

PM1

PM10 high volume

January/February 2007

Comparison of half-hourly PM10-measurements of an optical device (Type ESVC 265, Fa. GRIMM, Germany)with daily PM10 data from the DIGITEL

N=32

5-stage-BERNER-type-impactor at Melpitz site

Five-stage low-pressure cascade impactor, flow rate 4.5 m3/hAluminium impaction foils

pump

from inlet

aerodynamic particle diameter [µm]

foil from stage 3

Results of BERNER-type-impactor measurements (summer)

June 2006

2006-06-25

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10

BERNER type impactor stage (aerodynamic diameter [µm])

mas

s co

nce

ntr

atio

n [

µg/

m³]

EC

OC

Ca

Mg

K

NH4

Na

SO4

NO3

Cl

rest

Results of BERNER-type-impactor measurements (winter)

2007-01-27


0.0

0.5

1.0

1.5

2.0

2.5

3.0

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10


mas

s co

ncen

trat

ion

[µg/

m³]

EC

OC

Ca

Mg

K

NH4

Na

SO4

NO3

Cl

rest

Results of BERNER-type-impactor measurements for all 13 measured days in Summerand 15 measured days in Winter (1)

0

2

4

6

8

10

12

14

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

Mass

0

2

4

6

8

10

12

14

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

conc

entr

atio

n [µ

g/m

³]

Mass

Structure of the Boxplot

minumum

lower Quartile

upper Quartile

mean value

maximum

Mass

Time profiles and mass fraction

Comparison with PM1 DIGITEL daily filter samples

PM

10 P

arti

cle

mas

s co

ncen

trat

ion

[ng/

m³]

Measurements with the MAAP, Example for 10 days in June 2006, minute-means

June 2006 January/February 2007

Evolution of number size distributions of ambient aerosols (upper figures) and of non-volatile particle fractions behind the thermodenuder (lower figures) as a meanfor the EMEP-summer- and -winter-campaign.

We provide data for both EMEP-Intensive campaigns in 2006 and 2007DIGITEL High Volume Sampler (daily means, PM1, PM2.5 and PM10)MAAP, Multi Angel Absorption Photometer (Model 5012) (Minute means)Berner, 5-stage-BERNER-type-impactor (mass, water soluble ions,

organic and elemental carbon, OC, EC) (daily means for selected days,13 during summer and 15 during winter campaign)

GRIMM Type ESVC 265, optical detection of PM1, PM2.5 and PM10 (half-hourly means)

TDMPS TDMPS (twin-differential-mobility-particle-sizer) with APS (aerodynamic-particle-sizer) in combination with a thermo-denuder (10 minute means and daily contour plots)

TOF-AMS, Particle-Mass-Spectrometer (data in winter campaign available)(5-minute-means)

This measurements can be done at Melpitz site also for 2008 and 2009

Plus …

Possible new and modified measurements for the future campaigns in 2008 and 2009 at Melpitz

AMS measurements in both campaigns with more focus also on organic speciation (HOA, OOA) (5 minute means)

Quasi continuously measurements of OC and EC with the SUNSET LABORATORY’s Carbon Aerosol Analyzer (hourly means for OC/EC)

Artifact free sampling of OC/EC (following EUSAAR) – Analysis of OC and EC with C-mat 5500 (VDI 2465 page 2) (daily mean every second day)

Monitor for Aerosols & Gases in Ambient AirMARGA (commercial vision of SJAC)for NO3

-, NH4+, SO4

–, Cl- /HNO3, HCl, NH3, SO2 in PM2.5

(hourly means) (MARGA can be integrated in the 2009 campaign)

TEOM® FDMS for nearly artifact free measurements of PM10 mass concentration (10 minute means)

NH3-Measurements by photoacoustic (TGA 310) (10 minute means)

Especially the time slot of the winter campaign shows only situations with westerly winds and the Winter 2006/2007 was in Germany extremely mild.The comparison of both campaigns therefore give very untypical results for the Melpitz site. They are differ from that of long-time-observations. !

The particle mass concentration PM10 decreased up to the end of the 90-ies and remains constant for the last years. The inter annular winter variations are much higher than those of the summers. The Melpitz site is located in the lowlands of Eastern Germany and may be influenced episodically by air masses from Eastern Europe transporting aerosol in the EU with a lot of sulphate, OC and EC especially in winters. Such air masses are the reason for high PM10 concentration episodes in large areas with a typical high PM2.5/PM10 ratio (detection of long-range-transport). The results for Intensive-Measuring-Campaigns at Melpitz site for 2006 and 2007 and the future campains for 2008 and 2009 can be integrated in longtime measurements for PM.

Suitability of Melpitz site

reasons

actions

We would like to thank Jörn Hanß, Eveline Neumann, Annelie Thomas, Helga Mamczak, Brigitte Gerlach and Anett Dietze.

Particulate MatterWe acknowledge the support from the

Umweltbundesamt in Germany for the 2006 and 2007EMEP-Intensive-Measuring-Campaigns

(project 351 01 031) and continuation of measurements in 2006/07 (project 351 01 38)

SUPPLEMENTS

0

20

40

60

80

100

120

140

93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08

mas

s co

nce

ntr

atio

n P

M 10

[µg/

m³]

daily means < 50 µg/m³

daily means > 50 µg/m³

data UBA < 50 mg/m³

data UBA > 50 µg/m³

running 10 day mean

Average[µg/m³] 35.2 36.1 32.9 38.9 32.5 27.5 22.9 21.1 21.6 25.7 24.4 19.9 22.4 23.5 22.6Part [%] 97 99 98 100 98 98 98 99 100 89 91 99 99 99 25days > 50 61 67 56 79 45 24 8 3 5 16 19 6 8 11 5days > 40 113 117 103 129 96 55 30 10 20 43 35 18 28 32 10deas > 30 188 217 176 190 160 110 83 60 63 101 86 53 78 85 22year 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

Time-slots of the summer and winter EMEP-Intensive-Measuring-campaignsin the daily long-time PM10-Mesurements at Melpitz site

Campaigns inWinter and Summer

0

90

180

270

360

time (days)

win

ddi

rect

ion

[°]

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

pre

cipi

tatio

n [

mm

]

winddirection

precipitation

0

90

180

270

360

Zeit (Tage)

win

ddire

ctio

n [°

]

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

prec

ipita

tion

[mm

]

winddirectionprecipitation

0

200

400

600

800

1000

1200

time (days)

glo

ba

l ra

dia

tion

[W

/m²]

0

2

4

6

8

10

12

14

16

18

20

win

dve

loci

ty [

m/s

]

globalradiation

wind velocity

0

200

400

600

800

1000

1200

time (days)

glo

ba

l ra

dia

tion

[W

/m²]

0

2

4

6

8

10

12

14

16

18

20

win

dve

loci

ty [

m/s

]

global radiation

windvelocity

Meteorological parameters during the EMEP intensive campaigns at Melpitz site (2)

Global radiation and wind velocity at Melpitz site

June 2006 January/February 2007

Wind direction and precipitation at Melpitz site


PM10 1.09 + 1.22 PM10 2.96 + 2.31

PM2.5 0.55 + 0.90 PM2.5 2.46 + 2.16

PM1 0.30 + 0.55 PM1 0.66 + 1.56


Nitrate-concentration

0

1

2

3

4

5

6

7

8

9

10

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10

0

1

2

3

4

5

6

7

8

9

10

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10


PM10 2.84 + 1.10 PM10 1.72 + 0.97

PM2.5 2.66 + 1.05 PM2.5 1.53 + 2.16

PM1 2.36 + 0.93 PM1 0.85 + 0.62


Sulphate-concentration

0

1

2

3

4

5

6

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10

0

1

2

3

4

5

6

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10


PM10 1.03 + 0.36 PM10 1.20 + 0.92

PM2.5 1.04 + 0.33 PM2.5 1.13 + 0.89

PM1 0.93 + 0.28 PM1 0.86 + 0.66


Ammonium-concentration

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Mas

senk

onze

ntra

tion

[µg/

m³]

PM1

PM2.5

PM10


June 2006

2006-06-05

0.0

0.5

1.0

1.5

2.0

2.5

3.0

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10


mas

s co

nce

ntr

atio

n [

µg/

m³]

rest Cl

NO3 SO4

Na NH4

K Mg

Ca OC

EC


June 2006

2006-06-12

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10


mas

s co

nce

ntr

atio

n [

µg/

m³]

EC

OC

Ca

Mg

K

NH4

Na

SO4

NO3

Cl

rest


2007-01-15


0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10


mas

s co

nce

ntr

atio

n [

µg/

m³]

EC

OC

Ca

Mg

K

NH4

Na

SO4

NO3

Cl

rest


2007-02-08


0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

0.05-0.14 0.14-0.42 0.42-1.2 1.2-3.5 3.5-10


mas

s co

nce

ntr

atio

n [

µg/

m³]

EC

OC

Ca

Mg

K

NH4

Na

SO4

NO3

Cl

rest

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

01.06

.2006

03.06

.2006

05.06

.2006

07.06

.2006

09.06

.2006

11.06

.2006

13.06

.2006

15.06

.2006

17.06

.2006

19.06

.2006

21.06

.2006

23.06

.2006

25.06

.2006

27.06

.2006

29.06

.2006

Mas

sen

kon

zen

trat

ion

[µ

g/m

³]

MAAP_PM10

EC_DIGITEL_PM10

TC_DIGITEL_PM10

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

08.01

.2007

10.01

.2007

12.01

.2007

14.01

.2007

16.01

.2007

18.01

.2007

20.01

.2007

22.01

.2007

24.01

.2007

26.01

.2007

28.01

.2007

30.01

.2007

01.02

.2007

03.02

.2007

05.02

.2007

07.02

.2007

Mas

sen

kon

zen

trat

ion

[µ

g/m

³]

Comparison of black carbon determination from DIGITEL-Filters as EC (VDI-2465, page 2) and an optical determination with an Multi Angel Absorption Photometer (MAAP, Model 5012)for the EMEP summer and winter campaigns 2006 and 2007Database daily meansTC = OC + EC

Evolution of number size distributions of ambient aerosols (upper figures) and of non-volatile particle fractions behind the thermodenuder (lower figures)


June 2006 Example for one day in

TDMPS (twin-differential-mobility-particle-sizer) with APS (aerodynamic-particle-sizer)


0.0

0.5

1.0

1.5

2.0

2.5

3.0

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

0.0

0.5

1.0

1.5

2.0

2.5

3.0

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]Sulphate

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³] Ammonium

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]


0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]Nitrate

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]Chloride


0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]OC

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0,05-0,14 0,14-0,42 0,42-1,2 1,2-3,5 3,5-10

Par

ticl

e m

ass

con

cen

trat

ion

[µ

g/m

³]EC

Some Experiences and results from EMEP-Intensive- Measuring-Campaigns at Melpitz site (German...

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Transcript of Some Experiences and results from EMEP-Intensive- Measuring-Campaigns at Melpitz site (German...