ground-based reference measurements covering...

Ground-based Reference Measurements Covering Asia

Sang-Woo KimSchool of Earth and Environmental Sciences, Seoul National University

Ground-based Aerosol Observation Activities in Asia

Vertical:Lidar Network: AD-NET (including KALION), MPL-NET

Column-integrated:Sky Radiometer Network: SKYNET, AERONET

Near-surface:UNEP Atmospheric Brown Cloud – Asia NetworkWMO/GAW & NOAA/ESRL Federal Aerosol Network

AD-Net Asian dust and aerosol lidar observation network

http://www-lidar.nies.go.jp/AD-Net/

21 sites (as of 2016)

Products : • Backscatter cross-section• Depolarization ratio• Extinction • Aerosol Optical depth• 1064/532 aerosol backscatter ratio

NRT Data Processing

KALIONKorea aerosol lidar observation network

http://www.kalion.kr10 sites (as of 2016)

AERONET

100 g/m3

11 Oct (Monday) 12 Oct (Tuesday)

Range-corrected signal

Depolarization ratio

Aerosol Extinction Coeff.

Aerosol Type

Aerosol Mass Concentration

Skyradiometer

Skyradiometer, pyranometer, Lidar, microwave

_

Red : Data available (38)Yellow: Data available

in the future (28)Black: Data can not be

published (7)

Okinawa

SKYNETGAW Contributing Network

http://atmos2.cr.chiba-u.jp/skynet/http://www-lidar.nies.go.jp/skynet/index.php

April 2016

Courtesy of Prof. Terry Nakajima

China IndiaEuropeKorea

Sub-network

SKYNET international committee

Japan SouthEast Asia

WG*3

AlgorithmCalibration

NetworkCoordinator

ISDC*1

Mongolia

*1 ISDC: International SKYNET Data Center *2 RSDC: Regional SKYNET Data Center *3 WG: Working Group

RSDC*2

Mirroring

Chair: T. NakajimaVice: M. Campanelli, G. PandithuraiChina: H. Che, L. DongKorea (KSNET): S.-W. Kim, J. KimJapan: H. Irie, T. NishizawaSouth East: B. ThanaEurope (ESR): M. Campanelli, V. EstellesIndia: V.K. Soni, G. PandithuraiMongolia: T. Nas-urt

Network Coordinator: K. AokiISDC: Nisizawa@NIESCalibration WG: CheAlgorithm WG: Irie


Correlation analysis

Sky radiometer

PFR

PFR > Sky radiometer > Cimel※Difference is less than 0.01 and small enough for applied researches.※F0 calibration by Imporved Langley method for skyradiometer.

Cim

el

Sky radiometer

Aerosol Optical Depth at 500 nm


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer

675nm870nm1020nmVer 4

0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


Pune (2004/10-2005/12) Chiba(2011/12-2012/10) Valencia (2008/04-2009/08) Seoul(2012/03-2012/05)

0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


0.5

0.6

0.7

0.8

0.9

1

0.5 0.6 0.7 0.8 0.9 1

Sk

y r

ad

iom

eter

Sun photometer


P. Khatri (JGR'15)

Comparison of SSA with AERONET values Cloud screening SVA(solid view angles) Skyrad.pack v4, 5

F0, SVA (angle not significant) SVA (angle not significant)


UNEP/ABC- (Asia) Climate Observatories• Intensive Analysis Period (2011-)• Data archives @ SNU (2011-)

Data Center(ROAP)

Data Analysis Center(SNU)

Modeling Group Data Collection

(UT)

Impact Study Groups

Observatories

variablesmappings

formats

capacity build. of analysistool kits etc

1st analysis

2nd analysis

archive and distribution

comparison

ACCMIP/AC&C/IGAC-SPARCAEROCOMEANETAERONET&SKYNETMPL, AD-0NETVarious national projects

data

Maldives Climate Observatory at Hanimaadhoo (MCO-H)

2-W Pol. LIDAR

TSI 3563Nephelometer

Magee Sci. AE-31Aethalometer

TSI 3034SMPS

TSI 3321APS

Kanomax BC monitorCOSMOS

Sunset EC/OCanalyzer

CLAP

TSI 3776CPC

AERONET, RadiometersKorea ClimateObservatory atGosan (KCO-G)

MISR-Derived Aerosol Optical Depth at 555nm (2008-2010)

Hanimaadhoo (Maldives) 6.78N, 73.18E, 15m

Gosan (Korea)33.29N, 126.16E, 72m

Anmyon (Korea)36.32N, 126.19E, 46m

Himalayas (Nepal)27.95N, 86.82E, 5079 m

MAM JJA

SON DJF

Pre

cipita

tion

(mm

d-1)

10 m s-1

Meteorological Fields

Pre

cipita

tion

(mm

d-1)

Wet (Summer) Dry (Winter)

BC Mass and Aerosol Scattering Coefficient

BC

ma

ss c

on

cen

trat

ion

(u

g/m

3) A

ero

sol scatte

ring

(55

0n

m, M

m-1)

1 2 3 4 5 6 7 8 9 10 11 12

BC

(

g/m

3)

0.0

0.5

1.0

1.5

2.0

Aero

so

l scatt

eri

ng

co

eff

icie

nt

(Mm

-1)

0

50

100

150

200

KCO-A

1 2 3 4 5 6 7 8 9 10 11 12

BC

(

g/m

3)

0.0

0.5

1.0

1.5

2.0

Aero

so

l sc

att

eri

ng

co

eff

icie

nt

(Mm

-1)

0

50

100

150

200

KCO-G

KCO-A

MonthMonth

BC

ma

ss c

on

cen

trat

ion

(u

g/m

3) A

ero

sol scatte

ring

(55

0n

m, M

m-1)

1 2 3 4 5 6 7 8 9 10 11 12

BC

(

g/m

3)

0.0

0.5

1.0

1.5

2.0

Aero

so

l scatt

eri

ng

co

eff

icie

nt

(Mm

-1)

0

50

100

150

200

NCO-P

1 2 3 4 5 6 7 8 9 10 11 12

BC

(

g/m

3)

0.0

0.5

1.0

1.5

2.0

Aero

so

l scatt

eri

ng

co

eff

icie

nt

(Mm

-1)

0

50

100

150

200

Summer(wet) monsoon

Winter(dry) monsoon

Monsoon(wet)Pre-monsoon

Winter (dry)

Month

MCO-H

NCO-P

Post-monsoon

Gosan

Anmyon

Hanimaadhoo

Himalayas

KCO-G

KCO-A

MCO-H

NCO-PScattering (550nm, Mm-1)

Scattering (550nm, Mm-1)

Scattering (550nm, Mm-1)

Gosan

Courtesy of J. Ogren (NOAA/ESRL/GMD)

NOAA/ESRL Federal Aerosol Network

Opened: 2012Closed: 2013

PM10PM1

Lulin

Gosan

Anmyeon

NOAA/ESRL Federal Aerosol Network

MODIS AOD (2012-2014 average)

Anmyon

Gosan

Lulin

Ratio

of D

p <1μ

m to

Dp <

10μm

Aero

sol Scatterin

g C

oefficien

t [%]

Aer

osol

Opt

ical

Dep

th[5

00nm

]

Aer

osol

Abs

orpt

ion

Coef

ficie

nt[5

28nm

, Mm

-1]

Aer

osol

Sca

tter

ing

Coef

ficie

nt[5

50nm

, Mm

-1]

Ratio

of D

p <1μ

m to

Dp <

10μm

Aero

sol A

bso

rptio

n C

oefficien

t [%]

Sing

le S

catt

erin

g A

lbed

o

(a) Anmyon (b) Gosan (c) Lulin

Month Month Month

Dp < 10μmDp < 1μm

AOD

Scattering

Absorption

SSA

• Vertical: MPLNET + AD-NET

• Column: AERONET + SKYNET + CASNET ?

• Ground: WMO/GAW + ABC-Asia + NOAA/ESRL

Gosan Climate Observatory

Thank you for your attention!

ground-based reference measurements covering...

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