scholarly journals Supplementary material to "East Asian dust storm in May 2017: observations, modelling and its influence on Asia-Pacific region"

2018 ◽  
Author(s):  
Xiao-Xiao Zhang ◽  
Brenton Sharratt ◽  
Lian-You Liu ◽  
Zi-Fa Wang ◽  
Xiao-Le Pan ◽  
...  
Keyword(s):  
Dust Storm ◽  
East Asian ◽  
Asian Dust ◽  
Asia Pacific ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Asian Dust Storm ◽  
Supplementary Material

scholarly journals The impact of dust on sulfate aerosol, CN and CCN during an East Asian dust storm

2010 ◽  
Vol 10 (2) ◽  
pp. 365-382 ◽  
Author(s):  
P. T. Manktelow ◽  
K. S. Carslaw ◽  
G. W. Mann ◽  
D. V. Spracklen
Keyword(s):  
Dust Storm ◽  
East Asian ◽  
Asian Dust ◽  
Dust Storms ◽  
Sulfate Aerosol ◽  
Previous Model ◽  
Condensation Nuclei ◽  
Asian Dust Storm ◽  
The Impact ◽  
Mass Concentrations

Abstract. A global model of aerosol microphysics is used to simulate a large East Asian dust storm during the ACE-Asia experiment. We use the model together with size resolved measurements of aerosol number concentration and composition to examine how dust modified the production of sulfate aerosol and the particle size distribution in East Asian outflow. Simulated size distributions and mass concentrations of dust, sub- and super-micron sulfate agree well with observations from the C-130 aircraft. Modeled mass concentrations of fine sulfate (Dp<1.3 μm) decrease by ~10% due to uptake of sulfur species onto super-micron dust. We estimate that dust enhanced the mass concentration of coarse sulfate (Dp>1.0 μm) by more than an order of magnitude, but total sulfate concentrations increase by less than 2% because decreases in fine sulfate have a compensating effect. Our analysis shows that the sulfate associated with dust can be explained largely by the uptake of H2SO4 rather than reaction of SO2 on the dust surface, which we assume is suppressed once the particles are coated in sulfate. We suggest that many previous model investigations significantly overestimated SO2 oxidation on East Asian dust, possibly due to the neglect of surface saturation effects. We extend previous model experiments by examining how dust modified existing particle concentrations in Asian outflow. Total particle concentrations (condensation nuclei, CN) modeled in the dust-pollution plume are reduced by up to 20%, but we predict that dust led to less than 10% depletion in particles large enough to act as cloud condensation nuclei (CCN). Our analysis suggests that E. Asian dust storms have only a minor impact on sulfate particles present at climate-relevant sizes.

scholarly journals East Asian dust storm in May 2017: observations, modelling, and its influence on the Asia-Pacific region

2018 ◽  
Vol 18 (11) ◽  
pp. 8353-8371 ◽  
Author(s):  
Xiao-Xiao Zhang ◽  
Brenton Sharratt ◽  
Lian-You Liu ◽  
Zi-Fa Wang ◽  
Xiao-Le Pan ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Dust Storm ◽  
North Pacific ◽  
East Asian ◽  
Asian Dust ◽  
Asia Pacific ◽  
Gobi Desert ◽  
Dust Event ◽  
The North ◽  
The North Pacific

Abstract. A severe dust storm event originated from the Gobi Desert in Central and East Asia during 2–7 May 2017. Based on Moderate Resolution Imaging Spectroradiometer (MODIS) satellite products, hourly environmental monitoring measurements from Chinese cities and East Asian meteorological observation stations, and numerical simulations, we analysed the spatial and temporal characteristics of this dust event as well as its associated impact on the Asia-Pacific region. The maximum observed hourly PM10 (particulate matter with an aerodynamic diameter ≤ 10 µm) concentration was above 1000 µg m−3 in Beijing, Tianjin, Shijiazhuang, Baoding, and Langfang and above 2000 µg m−3 in Erdos, Hohhot, Baotou, and Alxa in northern China. This dust event affected over 8.35 million km2, or 87 % of the Chinese mainland, and significantly deteriorated air quality in 316 cities of the 367 cities examined across China. The maximum surface wind speed during the dust storm was 23–24 m s−1 in the Mongolian Gobi Desert and 20–22 m s−1 in central Inner Mongolia, indicating the potential source regions of this dust event. Lidar-derived vertical dust profiles in Beijing, Seoul, and Tokyo indicated dust aerosols were uplifted to an altitude of 1.5–3.5 km, whereas simulations by the Weather Research and Forecasting with Chemistry (WRF-Chem) model indicated 20.4 and 5.3 Tg of aeolian dust being deposited respectively across continental Asia and the North Pacific Ocean. According to forward trajectory analysis by the FLEXible PARTicle dispersion (FLEXPART) model, the East Asian dust plume moved across the North Pacific within a week. Dust concentrations decreased from the East Asian continent across the Pacific Ocean from a magnitude of 103 to 10−5 µg m−3, while dust deposition intensity ranged from 104 to 10−1 mg m−2. This dust event was unusual due to its impact on continental China, the Korean Peninsula, Japan, and the North Pacific Ocean. Asian dust storms such as those observed in early May 2017 may lead to wider climate forcing on a global scale.

scholarly journals East Asian dust storm in May 2017: observations, modelling and its influence on Asia-Pacific region

2018 ◽  
Author(s):  
Xiao-Xiao Zhang ◽  
Brenton Sharratt ◽  
Lian-You Liu ◽  
Zi-Fa Wang ◽  
Xiao-Le Pan ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Dust Storm ◽  
North Pacific ◽  
North Pacific Ocean ◽  
East Asian ◽  
Asian Dust ◽  
Asia Pacific ◽  
Gobi Desert ◽  
Dust Event ◽  
The North

Abstract. A severe dust storm event originated from the Gobi Desert in Central and East Asia during 2–7 May, 2017. Based on moderate resolution imaging spectroradiometer (MODIS) satellite products, hourly environmental monitoring measurements from 367 Chinese cities and more than 2000 East Asian meteorological observation stations, and numerical simulations, we analysed the spatial and temporal characteristics of this dust event as well as its associated impact on the Asia-Pacific region. The maximum observed hourly PM10 (particulate matter with an aerodynamic diameter &amp;leq; 10 μm) concentration was above 1000 μg m−3 in Beijing, Tianjin, Shijiazhuang, Baoding, and Langfang and above 2000 μg m−3 in Erdos, Hohhot, Baotou, and Alxa in northern China. This dust event affected over 8.35 million km2, or 87 % of mainland China, and significantly deteriorated air quality in 316 cities of the 367 cities examined across China. The maximum surface wind speed during the dust storm was 23–24 m s−1 in the Mongolian Gobi Desert and 20–22 m s−1 in central Inner Mongolia, indicating the potential source regions of this dust event. Lidar-derived vertical dust profiles in Beijing, Seoul, and Tokyo indicated dust aerosols were uplifted to an altitude of 1.5–3.5 km whereas simulations by the Weather Research and Forecasting with Chemistry (WRF-Chem) model indicated 20.4 Tg and 5.3 Tg of aeolian dust being deposited respectively across continental Asia and the North Pacific Ocean. According to forward trajectory analysis by the FLEXible PARTicle dispersion (FLEXPART) model, the East Asian dust plume moved across the North Pacific within a week. Dust concentrations decreased from East Asian continent across the Pacific Ocean from a magnitude of 103 to 10−5 μg m−3, while dust deposition intensity ranged from 104 to 10−1 mg m−2. This dust event was unusual due to its impact on continental China, Korea, Japan and North Pacific Ocean. Asian dust storms such as observed in early May 2017 may lead to wider climate forcing on a global scale.

scholarly journals ASEAN Defence Ministers’ Meeting Plus (ADMM+) as a New Element in the Emerging Security Architecture of the Southeast Asia

2020 ◽  
pp. 34-46
Author(s):  
Valeria V. Vershinina ◽  
Keyword(s):  
Southeast Asia ◽  
East Asian ◽  
Asia Pacific ◽  
Security Architecture ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
Security Challenges ◽  
Military Security ◽  
East Asian Summit ◽  
High Level

In the recent decades despite the existing broad network of the multilateral security formats in the Asia-Pacific region a high level of conflicts and old disputes remain, while non-military security challenges and threats are becoming more complicated. Among the most well-known are the ASEAN Regional Forum (ARF) and the East Asian Summit (EAS). Nevertheless, given the increasing destabilization in the region, one can state that the above-mentioned formats proved ineffective and as a result, new solutions need to be found. One of such possible solutions is an initiative proposed by Vietnam to create a new format known as ASEAN Defence Ministers’ Meeting Plus (ADMM+).

scholarly journals Arah Kebijakan Kerja Sama Pertanian Indonesia di Kawasan Asia Pasifik

2019 ◽  
Vol 36 (1) ◽  
pp. 63
Author(s):  
NFN Hermanto
Keyword(s):  
International Cooperation ◽  
Agricultural Sector ◽  
East Asian ◽  
Asia Pacific ◽  
Innovative Technology ◽  
Small Scale ◽  
Pacific Region ◽  
Technical Cooperation ◽  
Asia Pacific Region ◽  
Advantages And Disadvantages

<p>In the current globalization era, it can no longer be inevitable the importance of cooperation among countries to realize peace and mutual prosperity. One of the growing international collaborations in the Asia Pacific region is Association of South East Asian Nations (ASEAN) and Asia Pacific Economic Cooperation (APEC). The idea of the agricultural cooperation importance is one of the efforts to respond to various challenges in free trade and globalization era where each country in the Asia Pacific region has its advantages and disadvantages. This paper aims to describe the readiness of Indonesia’s agriculture and reviewing several international cooperation that built in the Asia Pacific region. With the use of the analysis framework based on the theories of international cooperation, showed that Indonesian agricultural sector still requires effort to empowerment because dominated by the small-scale businesses with limited capital and innovative technology, respectively. Most of the agricultural export products are also still needs the exertion of increase of its competitiveness. The cooperation in the Asia-Pacific region is very prospective. Trade and investment cooperation are more open in the Asia Pacific region will open market opportunities for agricultural products Indonesia thereby potentially encourage high economic growth and to increase the standard of life of the people of Indonesia and other countries in the Asia Pacific region. To create new opportunities and new markets in the Asia Pacific region, needed the policy direction covering four interrelated matters, namely how to improve access of agricultural commodity markets, increase investment, develop technical cooperation and strengthen diplomacy function as a factor of facilitating Indonesia facilitators in facing many agriculture collaborations for today and the future.</p><p>Abstrak</p><p>Di era globalisasi seperti sekarang ini, tidak dapat lagi dielakkan pentingnya menjalin kerja sama antarnegara dalam rangka mewujudkan perdamaian dan kesejahteraan bersama. Salah satu kerja sama internasional yang berkembang saat ini di kawasan Asia Pasifik adalah <em>Association of South East Asian Nations</em> (ASEAN) dan <em>Asia Pasific Economic </em>Coorperation (APEC). Pemikiran akan pentingnya menjalin kerja sama, khususnya di bidang pertanian merupakan salah satu upaya merespon berbagai tantangan di era globalisasi dimana masing-masing negara di kawasan Asia Pasifik memiliki kelebihan dan kekurangannya. Tulisan ini bertujuan menganalisis kesiapan pertanian Indonesia serta mereview beberapa kerja sama internasional yang dibangun di kawasan Asia Pasifik. Dengan kerangka analisis yang didasarkan pada teori-teori kerja sama internasional, diperoleh gambaran bahwa sektor pertanian Indonesia masih memerlukan upaya pembenahan/ dan pemberdayaan karena usaha pertanian saat ini masih didominasi oleh usaha dengan skala kecil, modal yang terbatas, dan penggunaan teknologi yang masih sederhana. Sebagian besar produk ekspor pertanian juga masih memerlukan upaya peningkatan daya saing. Meskipun demikian prospek kerja sama di kawasan Asia-Pasifik sangat menjanjikan. Kerja sama perdagangan dan investasi yang lebih terbuka di kawasan Asia Pasifik akan membuka peluang pasar bagi produk pertanian Indonesia sehingga berpotensi mendorong pertumbuhan ekonomi yang tinggi, serta meningkatkan standar hidup masyarakat Indonesia dan negara lainnya di kawasan Asia Pasifik. Untuk menciptakan peluang baru serta pasar baru di kawasan Asia, dibutuhkan adanya strategi mencakup empat hal yang saling terkait yakni bagaimana meningkatkan akses pasar, meningkatkan investasi, mengembangkan kerja sama teknik (<em>technical cooperation</em>) serta penguatan fungsi diplomasi pertanian sebagai faktor pelancar Indonesia dalam menghadapi berbagai kerja sama di bidang pertanian saat ini dan ke depan.</p>

Atrocity Prevention: From Promise to Practice in the Asia Pacific

2016 ◽  
Vol 8 (2-3) ◽  
pp. 180-199
Author(s):  
Alex J. Bellamy
Keyword(s):  
East Asian ◽  
Responsibility To Protect ◽  
Asia Pacific ◽  
Pacific Region ◽  
Asia Pacific Region ◽  
The Third ◽  
Dramatic Decline ◽  
Global Action ◽  
Mass Atrocity ◽  
Atrocity Crimes

Drawing upon talks delivered at the Second Global Action Against Mass Atrocity Crimes conference, held in Manila 2016, this paper examines the extent to which the Asia Pacific region has begun to translate its commitment to the Responsibility to Protect (R2P) into practice. It finds that the so-called “East Asian Peace” has transformed the region from one of the world’s deadliest to one of the world’s most peaceful. But many key challenges remain and there is much to be done to make R2P and atrocity prevention a daily lived reality. This article proceeds in three parts. The first briefly describes the dramatic decline of atrocity crimes in East Asia. The second points to some key challenges on the ideational and institutional fronts. The third section turns specifically to the need to develop national architectures for atrocity prevention.

Sign in / Sign up

Export Citation Format

Share Document