지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이 논문의 연구 히스토리 (4)
2011
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The collision efficiency data for collision between fraupel of hail particles and cloud drops that take into account the differences of particle density are applied to the Takahashi cloud medel. The original setting assumes that graupel or hail collision efficiency is the same as that of the cloud drops of the same volume. The Takahashi cloud model is run with the new collision efficiency data and the results are compared with those with the original. As an initial condition, a thermodynamic profile that can initiate strong convection is provided. Three different CCN concentration values and therefore initial cloud drop spectra are prescribed that represent martitime (CCN concentration = 300 cm-³), continental (1000 cm-³) and extreme continental (5000 cm-³) air masses to examine the aerosol effects on cloud and precipitation development. Increase of CCN concentration causes cloud drop sizes to decrease and cloud drop concentrations to increase. However, the concentration of ice particles decreases with the increase of CCN concentration because small drops are difficult to freeze. These general trends are well captured by both medel runs (one with the new collision efficiency data and the other with the original) but there are significant differences: with the new data, the development of cloud and raindrop formation are delayed by (1) decrease of ice collision efficiency, (2) decrease if latent heat from riming process and (3) decrease of ice crystals generated by ice multiplication. These results indicate that the model run model with the original collision efficiency data overestimates precipitation rates.
목차
Abstract
1. 서론
2. 모형 및 실험 설계
3. 결과 및 분석
4. 요약 및 결론
참고문헌
참고문헌 (25)
참고문헌 신청
1. [학술지(정기간행물)] - Andreae, M. O / 2004 / Smoking rain clouds over the Amazon / Science 303 : 1337 ~ 1342
2. [학술지(정기간행물)] - Auer, A. H. Jr. / 1971 / Observations of ice crystal nucleation by droplet freezing in natural cloud / J. Atmos. Sci. 28 : 285 ~ 290
3. [학술지(정기간행물)] - Beheng, K / 1978 / Numerical simulation of graupel development / J. Atmos. Sci. 35 : 683689 ~
4. [학술지(정기간행물)] - Berry, E. X / 1967 / Cloud droplet growth by collection / J. Atmos. Sci. 24 : 688 ~ 701
5. [학술지(정기간행물)] - Flossmann, A. I. / 1985 / A theoretical study of the wet removal of atmospheric pollutants. Part 1: The redistribution of aerosol particles captured through nucleation and impaction scavenging by growing cloud drops / J. Atmos. Sci 42 : 583 ~ 606
2. [학술지(정기간행물)] - Auer, A. H. Jr. / 1971 / Observations of ice crystal nucleation by droplet freezing in natural cloud / J. Atmos. Sci. 28 : 285 ~ 290
3. [학술지(정기간행물)] - Beheng, K / 1978 / Numerical simulation of graupel development / J. Atmos. Sci. 35 : 683689 ~
4. [학술지(정기간행물)] - Berry, E. X / 1967 / Cloud droplet growth by collection / J. Atmos. Sci. 24 : 688 ~ 701
5. [학술지(정기간행물)] - Flossmann, A. I. / 1985 / A theoretical study of the wet removal of atmospheric pollutants. Part 1: The redistribution of aerosol particles captured through nucleation and impaction scavenging by growing cloud drops / J. Atmos. Sci 42 : 583 ~ 606
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