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Titolo:
Trans-Pacific yellow sand transport observed in April 1998: A numerical simulation
Autore:
Uno, I; Amano, H; Emori, S; Kinoshita, K; Matsui, I; Sugimoto, N;
Indirizzi:
Kyushu Univ, Appl Mech Res Inst, Kasuga, Fukuoka 8168580, Japan Kyushu Univ Kasuga Fukuoka Japan 8168580 , Kasuga, Fukuoka 8168580, Japan Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan Natl Inst Environm Studies Tsukuba Ibaraki Japan 3050053 i 3050053, Japan Kagoshima Univ, Kagoshima 890, Japan Kagoshima Univ Kagoshima Japan 890Kagoshima Univ, Kagoshima 890, Japan
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
fascicolo: D16, volume: 106, anno: 2001,
pagine: 18331 - 18344
Fonte:
ISI
Lingua:
ENG
Soggetto:
LONG-RANGE TRANSPORT; EAST-ASIA; MINERAL AEROSOLS; AIR-POLLUTION; NORTH-AMERICA; SAHARAN DUST; MICROPHYSICS; CLIMATE; OZONE; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Uno, I Kyushu Univ, Appl Mech Res Inst, Kasuga, Fukuoka 8168580, Japan Kyushu Univ Kasuga Fukuoka Japan 8168580 a, Fukuoka 8168580, Japan
Citazione:
I. Uno et al., "Trans-Pacific yellow sand transport observed in April 1998: A numerical simulation", J GEO RES-A, 106(D16), 2001, pp. 18331-18344

Abstract

A yellow sand transport episode from the Asian continent to Japan and North America which occurred in April 1998 is simulated. A new on-line dust tracer model coupled with a regional-scale meteorological model is developed and applied to this dust storm episode. The results for two large dust events that started during April 14-15 and 19-20, 1998, have been analyzed and discussed. The first dust storm was trapped in a cutoff vortex developed over the China plain. A modeled 3-D structure of dust associated with this cutoff vortex agreed with an observed time-height cross section of dust concentration. Results show that the strong subsidence at the backside of the vortex restricted the dust layer below 3 km level. Model analysis revealed that the second dust event that started during April 19-20 over inland China was the origin of a dust episode reported over North America. The trans-Pacific dust transport simulation successfully showed the dust onset near the West Coast of North America. Elevation of the dust layer during the long-range transport was below 3 km. The model is extended to include the transportof an Asian origin anthropogenic tracer over the North Pacific Rim. Both the natural-origin mineral dust and the Asian-origin anthropogenic tracer are simultaneously transported even if their emission regions are different.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 10:14:42