linking atmospheric pollution to cryospheric changes · 2017-07-10 · atmospheric pollution and...
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2017
Guangzhou
Linking Atmospheric Pollution
to Cryospheric Changes
over “The Third Pole” Region
Qianggong Zhang
Zhiyuan Cong
Zhenming Ji
Chaoliu Li
Guishuai Zhang
Jie Huang
Dipesh Rupakheti
Shichang Kang
Yulan Zhang
Pengfei Chen
Junming Guo
Yang Li
Lekhendra Tripathee
Jizu Chen
Xiaofei Li
Arnico K. Panday
Maheswar Rupakheti
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Air Pollution & Atmospheric Brown Clouds
Haze
Trans-boundary Air PollutionAccelerated
Glacier melt
Yao et al., 2010 NCC
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From ICIMOD Atmospheric Brown Cloud Regional monitoring and assessment
Atmospheric Brown Clouds – Impact
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Transport? Impact?
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Black Carbon and Climatic Effects
Ramanathan et al, 2007 & Bond et al., 2013
c) Dimming due to ABCs (W/m2)
b) BC Atmos Heating (W/m2)
Period: 2001 to 2003
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Monitoring Network: A Prototype
Zhongba
仲巴
Lhasa
拉萨
Nam Co
纳木错
Lumbini
蓝毗尼Kathmandu
加德满都Pokhara
博卡拉
Dhunche
东启
Jomsom
乔姆索
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Atmospheric Pollution and Cryospheric Change
Aerosol: 30 Glacier: 14 Snow cover: 6
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Observational parameters, instrumentation, and temporal resolution
Research contentSampling/Observational
parametersInstrumentation Frequency
Online measurement
Aerosol optical properties CIMEL Sunphotometer hourly
Aerosol concentration: PM2.5 , PM10
Thermo RP1400 hourly
Gaseous precursors: SO2, Nox,
CO, O3; Toxic gas (Atmospheric mercury)
Thermo 42I, 43I, 45I,
49I analyzer; Tekran 2537
hourly
BC Aethalometer AE33 hourly
Filters
Total suspend particles:
EC/OC, brown carbon (BrC),
inorganic ions, trace element,
and isotopes, and organic tracers.
TSP sampler (KC-120H)
3-6 days
Glacier & Snow cover
Snow/ice samples: Dust,
EC/OC, BrC, WSOC, inorganic
ions, trace element, and isotopes, and organic tracers
1-2 times per year
In-situ AlbedoASD Handheld 2
spectroradiometer
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Logo Name Monitoring Content
Super
Station
Meteorology, Trace Gas, Active Aerosol sampling, Passive Sampling
Station
Meteorology, Active Aerosol sampling, Passive Sampling
Site
Low resolution active sampling + Passive sampling
Atmospheric Pollution and Cryospheric Change
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Atmospheric Pollution and Cryospheric Change
Everest
Nam Co
Sun Photometer
PM2.5
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Aims and Tasks
Characterize the chemical composition and levels of atmospheric
pollutants, depict their spatial and seasonal variation over the HTP.
Identify the sources of atmospheric pollutants and reveal the
transport pathway and mechanisms of trans-boundary
atmospheric pollution to the HTP.
Investigate the role of atmospheric pollutants (deposited as LAIs)
in the melting of glacier and snow cover and further quantify the
contribution of LAIs to the glacier and snowpack melting.
Determine the fate of environment-relevant pollutants within
glacier and snowpack and their scavenging process during
snow/ice melting.
Assess the impact of atmospheric pollution on the cryospheric
changes over the HTP
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Basic Design
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A filter sample at Kathmandu
Before VS After
Trans-Himalayan Filters
April 5-10, 2013
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BC and OC in aerosols
Chen et al., In Preparation
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Seasonal variation of BC and OC
Kathmandu Nam Co
Chen et al., In Preparation
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Mass Absorption Cross section (MAC): BC
Chen et al., In Preparation
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MAC-BrC
Chen et al., In Preparation
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Comparison of MAC
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WSOCBC
Everest
LuLang
Seasonal Variation of MAC
Li, et al., 2016, Atmos. Environ.
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So-Fossil
Biomass
Li-Fossil
Source of BC to Glacier snow: Isotopic Signature
Li, et al., 2016, Nature Commun.
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Angstrom
AOD at Nam Co Station
2009.3.16
AOD
Air mass trajectories simulated by COSMO
Trans-Himalayan Pollution Plume: An Event
Lüthi et al., 2015, Atmos. Chem.
Phys.
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Lüthi et al., 2015, Atmos. Chem. Phys.
Pollution
Event
13–19 March
Clean
Period
30 March–5 April
Trans-Himalayan Pollution Plume: An Event
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Lüthi et al., 2015 Atmos. Chem. Phys.
Pollution
Event
13–19 March
Clean
Period
30 March–5 April
Trans-Himalayan Pollution Plume: An Event
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珠峰站
0.0 0.3 0.6 0.9 1.20
2
4
6
8
0.0 0.3 0.6 0.9 1.20.00
0.05
0.10
0.15
0.20
0.25
0.00 0.05 0.10 0.15 0.20 0.250
2
4
6
8
0.00 0.05 0.10 0.15 0.20 0.25
0.0
0.3
0.6
0.9
1.2
有机碳
(
g m
-3)
元素碳 (g m-3)
y=0.57+4.68x
R2=0.81
y=-7.9+0.17x
R2=0.66
水溶性钾
(
g m
-3)
元素碳 (g m-3)
y=1.47+24x
R2=0.89有
机碳
(
g m
-3)
左旋葡聚糖 (g m-3)
y=0.24+4.18x
R2=0.68
元素碳
(
g m
-3)
左旋葡聚糖 (g m-3)
Everest
Trans-Himalayan Pollution through the Valleys
Cong et al., 2015, Atmos. Chem. Phys.
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About 10-40% of atmospheric BC in the southern TP is from
anthropogenic emission from South Asian
Yang et al., In Preparation
Pre-monsoon Monsoon
Contribution of BC from South Asia
WRF-Chem simulating in 2013
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Mo
ns
oo
nN
on
-Mo
ns
oo
n
Ji et al., 2015, Climate Dynamics
Climatic Effects of Carbonaceous Aerosols
0.1 ~ 0.5°C
warming!RegCM4.3.5 simulating
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RF
1-6 W/m2
Snow melt
10-25 mm(w.e.)Increasing Tem.
0.1-1.5°C
Ji et al., 2016. ACCR
Effects of BC-snow radiative feedback
RegCM4.3.5 + SNICAR
Climatic Effects of Carbonaceous Aerosols
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July 16, 2012 Aug. 26, 2012
Role of BC, Dust and Others in Glacier Melt
Zhadang Glacier
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情景一
情景二
情景三
BC(11%) Dust(38%)Total melt Others
Qu et al., 2015. ACP
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Total melt BC (37%) Dust (32%) Others
2013
2014
Li et al., 2016, TC
No.12 Glacier in Qilan
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Summary of Major Research Achievements
Kang & Zhang et al., In Preparation