EANET activities and the applicability to model

development

Kazuhide MatsudaADORC

EANET monitoring sites (2001)

Major monitoring parameters (2001)

• Wet deposition (major ions): 41 sites

• SO2 : 28 sites

• O3 : 12 sites (Japan and Thailand)

• PM10 : 14 sites (China and Japan)

– PM2.5 : 2 sites (Japan)

• Aerosol components, Total nitrate (nitrate + HNO3), total ammonia (NH4

+ + NH3) : 12 sites

Publications of EANET data

• The “Procedures on Data and Information Disclosure for the Acid Deposition Monitoring Network in East Asia (EANET)”.– Disclosed data are available for the

model validations.• Following reports are currently

opened to the publish.– “Report on the Acid Deposition

Monitoring of EANET during the Preparatory Phase”

– “Data Report on the acid deposition in the East Asian region 2000”

Procedures of data verifications

National Centers

ADORC (Network Center)

Data Verification Group

Senior Technical Manager`s MeetingScience Advisory Committee Meeting(Inter Governmental Meeting)

Data

Relevant activities

• QA/QC activities– Inter-laboratory Comparison Projects– Data Verification Programs

• Training programs – ADORC individual training– JICA group training

• Research activities on monitoring methodologies– Joint Researches between ADORC

and participating countries• ADORC Technical Missions

Model development in ADORC “ Regional Air Quality Model (RAQM)”

• 3D Eulerian model for regional scale• Terrain following height coordinate• Model Resolution

• Horizontal grids: 1°×1° • Vertical extent: 8 layers (0.05, 0.3, 0.75, 1.5,

2.75, 4.5, 6.5, 8.75km) • Gas-Phase Chemical Mechanism

• CBM-IV mechanism• 32 species and 52 chemical reactions

• Wet Deposition• Scavenging ratios

• Dry Deposition• Wesely’s parameterization scheme

• Dust and Sea salt Modules• Dust (Kosa) and sea spray droplets (sea salts) emissi

ons

Monthly wet deposition calculated by RAQM

nss-SO42-

NO3-

NH4+

Period: April 1999 Unit: m mol/m2/month

Influence of Miyakejima Volcano

• Monthly concentration changes (%) of SO2 (A) and sulfate (B) near the surface, September 2000

A B

Comparison between observed and calculated values of sulfate (non sea salt) concentration in rainwater (April, 1999)

0

20

40

60

80

100

120

Nansh

an

Dabag

ou

Xiaop

ing

Sado

Happo Oki

Ashizu

ri

Kuniga

mi

Kang

hwa

Kosa

n

Peta

ling

Jaya

Tana

h Rat

a

Bangk

ok

Patu

mth

ani

Khao

Lam

[μm

ol/

L]

Obs. Cal.

Comparison between observed and calculated values of nitrate in rainwater. (April, 1999)

0

510

1520

25

3035

40

Nans

han

Daba

gou

Xiaop

ingSa

do

Happ

o Oki

Ashiz

uri

Kunig

ami

Kang

hwaKo

san

Petal

ing Jay

a

Tana

h Rata

Bang

kok

Patum

than

i

Khao

Lam

[μm

ol/L

]

Obs. Cal.

Underestimation?

0

5

10

15

20

25

30

35

0 5 10 15 20 25 30 35

Obs. umol/ L

Cal

.

nss-SO42-

Sado, Dec.

0

10

20

30

40

0 10 20 30 40

Obs.

Cal

.

NH3+

mn01

cn01

cn03

cn02

id02 jp01

jp03jp02jp04

vn01

th03th01th02

my01

kr01

id01

cn04 jp08

jp06

jp07

ph01ru01

jp05

-60 %

-45 %

-30 %

-15 %

0 %

15 %

30 %

45 %

60 %

Sample No.1 Sample No.2

Inter-laboratory comparison

• Sample No. 1 High concentration

• Sample No. 2 Low concentration

jp02

cn02

jp04

jp01cn04 jp05

ru01mn01

jp07

th03

jp08

id01 kr01

cn01

jp03

id02

cn03

ph01

th01

th02

vn01my01

jp06

-60 %

-45 %

-30 %

-15 %

0 %

15 %

30 %

45 %

60 %

Sample No.1 Sample No.2

nss-SO42-

NH3+

Sulfate concentration in precipitation at Sado station

0

40

80

Apr May Jun Jul Aug Sep Oct Nov Dec2002

mol

/l

SO42- nssSO42-

nssSO42- = SO42- – (SO4/Na)sw x Na+

Comparison study on monitoring methodologies

Particulate sulfate Particulate nitrate

MICS-Asia Phase II

Perspectives of the Phase II

– Long-term simulation and source-receptor analysis;

– Expanding the chemical species such as sulfur, nitrogen, aerosols, ground-level ozone and

– Individual episodes that are of special interest for gaining insights into important conditions in Asia (e.g., yellow-sand and high ozone episodes).

Simulation cases• Case 1 March 2002

– Yellow sand and high ozone episodes

• Case 2 July 2001– Warm and high precipitation

– High SO2 episode in Japan

• Case 3 December 2001– Cold and low precipitation

• Case 4 March 2002– Inter-annual comparison with

March 2001.– One of the tasks on the LTP project

Plan of the 1st attempt

InventoriesDr. Street

Met. fieldsDr. Z. Wang

Modelers Model simulations

6th WS

Study groupJoint papers

Compiling data setCompiling data set

ResultsResults

Data setData setMonitoring data

Dr. Matsuda

Inventory comparison

• Announcement March 2003

Initial conditionDr. T. Holloway