Meteorological events and transport patterns in ACE‐Asia

Merrill, J. T.; Kim, Jiyoung

doi:10.1029/2003jd004124

Cited by 20 publications

(12 citation statements)

References 19 publications

(25 reference statements)

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“…In the spring season, formation of dust storms over Central and East Asia is commonly associated with cyclonic cold fronts (Merrill and Kim, 2004;Qian et al, 2004;Warner, 2004). This was also the case of the dust event that occurred during 6-10 April 2001.…”

Section: Mm5 Model Setupmentioning

confidence: 92%

Assessing uncertainties in dust emission in the Aral Sea region caused by meteorological fields predicted with a mesoscale model

Darmenova

Sokolik

2007

Global and Planetary Change

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Section: Mm5 Model Setupmentioning

confidence: 92%

Assessing uncertainties in dust emission in the Aral Sea region caused by meteorological fields predicted with a mesoscale model

Darmenova

Sokolik

2007

Global and Planetary Change

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“…to diagnose the paths of air parcels prior to their arrival in the sampling areas. Further discussion of meteorological influences and transport patterns is given by Merrill and Kim [2004].…”

Section: Measurement Overviewmentioning

confidence: 99%

Environmental snapshots from ACE‐Asia

Kahn

Anderson

et al. 2004

J. Geophys. Res.

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[1] On five occasions spanning the Asian Pacific Regional Aerosol Characterization Experiment (ACE-Asia) field campaign in spring 2001, the Multiangle Imaging Spectroradiometer spaceborne instrument took data coincident with high-quality observations by instruments on two or more surface and airborne platforms. The cases capture a range of clean, polluted, and dusty aerosol conditions. With a three-stage optical modeling process, we synthesize the data from over 40 field instruments into layer-by-layer environmental snapshots that summarize what we know about the atmospheric and surface states at key locations during each event. We compare related measurements and discuss the implications of apparent discrepancies, at a level of detail appropriate for satellite retrieval algorithm and aerosol transport model validation. Aerosols within a few kilometers of the surface were composed primarily of pollution and Asian dust mixtures, as expected. Medium-and coarse-mode particle size distributions varied little among the events studied; however, column aerosol optical depth changed by more than a factor of 4, and the near-surface proportion of dust ranged between 25% and 50%. The amount of absorbing material in the submicron fraction was highest when near-surface winds crossed Beijing and the Korean Peninsula and was considerably lower for all other cases. Having simultaneous single-scattering albedo measurements at more than one wavelength would significantly reduce the JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 109, D19S14,

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“…This simulated particle distribution and the GMS‐5 revealed midlatitude cyclone activity shown here are consistent with the previous findings that the midlatitude synoptic‐scale cyclone activity is the key mechanism for the long‐range dust transport in East Asia [ Sun et al ., 2003; Liu et al , 2004; Uno et al , 2004; Takemi and Seino , 2005]. Uno et al [2003b] and Merrill and Kim [2004] discussed more detailed meteorological processes and their associated transport patterns during the 2001 ACE‐Asia.…”

Section: Resultsmentioning

confidence: 99%

Long‐range transport of the April 2001 dust clouds over the subtropical East Asia and the North Pacific and its impacts on ground‐level air pollution: A Lagrangian simulation

Wang

2007

J. Geophys. Res.

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One of the most remarkable Asian dust storms occurred in April 2001, during the periods of the Aerosol Characterization Experiment (ACE)‐Asia and the Transport and Chemical Evolution Over the Pacific (TRACE‐P) field experiments. Our high‐resolution Lagrangian simulations and the detailed comparisons with the Total Ozone Mapping Spectrometer (TOMS)‐Aerosol Index (AI) data, the Geostationary Meteorological Satellite (GMS)‐5 derived dust distribution, and the ground‐level ambient air particulate matter measurements over Taiwan in the subtropical East Asia reveal several features which were not reported before. We found that (1) the trans‐Pacific long‐range transport was dominated by the dust emissions from the natural source over the Gobi desert and the anthropogenic source over east China before 6–7 April, while the southward long‐range transport to the subtropical East Asia were mainly contributed by the dust emissions from natural source over the Taklamakan and the Gobi, and the anthropogenic source over east China after 6–7 April; (2) the southward long‐range transport implies that the anthropogenic pollution is ahead of the cold front (where the precipitation washes out the particulate matter), while the dust is behind the cold front. (3) The dust emissions from the Gobi during 7–9 April, anthropogenic emissions from east China during 9–10 April, and dust emissions from the Taklamakan during 1–4 April appear to have the most significant impacts on the ground‐level particulate matter concentrations over Taiwan. The simulated particle emitted from desert regions before 6–7 April mainly confined to the Gobi and the Taklamakan regions until 6 April when they became highly mobile for the long‐range transport by the large‐scale cyclonic activity and its associated cold air outbreak. The southward transport characteristics simulated here are consistent with the aerosol characterization observed at Taiwan during this period. Our simulations reveal that the rapid trans‐Pacific transport processes occurred on 12 April contribute to the extensive areas of elevated AI values prevail over the North Pacific during this day.

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Meteorological events and transport patterns in ACE‐Asia

Cited by 20 publications

References 19 publications

Assessing uncertainties in dust emission in the Aral Sea region caused by meteorological fields predicted with a mesoscale model

Assessing uncertainties in dust emission in the Aral Sea region caused by meteorological fields predicted with a mesoscale model

Environmental snapshots from ACE‐Asia

Long‐range transport of the April 2001 dust clouds over the subtropical East Asia and the North Pacific and its impacts on ground‐level air pollution: A Lagrangian simulation

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