Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3390/atmos11080850 |
| Weather Effects of Aerosols in the Global Forecast Model | |
| Jeong, Gill-Ran | |
| 通讯作者 | Jeong, GR |
| 来源期刊 | ATMOSPHERE
 |
| EISSN | 2073-4433 |
| 出版年 | 2020 |
| 卷号 | 11期号:8 |
| 英文摘要 | The weather effects of aerosol types were investigated using well-posed aerosol climatology through the aerosol sensitivity test of thermodynamic and hydrometeor fields, and the weather forecast performances in July of 2017. The largest aerosol direct radiative forcing (ADRF) in July was due to dust aerosols at the surface and atmosphere, and sulfate at the top of the atmosphere (TOA), respectively. The ADRF of total aerosols had unilateral tendencies in thermodynamic and hydrometeor fields. The contribution of individual aerosols was linearly additive to those of total aerosols in the heat fluxes, heating rates, humidity, and convective precipitation. However, no such linearity existed in temperature, geopotential height, cloud liquid or ice contents, and large-scale precipitation. Dust was the most influential forcing agent in July among five aerosol types due to the largest light-absorption capacity. Such unilateral tendencies of total aerosols and a part of the linearity of individual aerosols were exerted on the weather systems. The verification of medium-range forecasts showed that aerosols alleviated the overestimation of surface shortwave (SW) downward fluxes, the negative biases of temperature and geopotential heights at TOA and surface, and the underestimation in light and moderate precipitation. In contrast, they enhanced warm biases at the mid-atmosphere and underestimation in heavy precipitations, particularly negative biases in the intertropical convergence zone (ITCZ). Weather forecast scores including current aerosol information were improved in geopotential height (GPH) of the northern hemisphere (NH); however, they got worse in the temperature and the upper atmosphere GPH of the southern hemisphere (SH), which was mostly due to black carbon (BC) aerosols in the tropical regions. The missing mechanisms such as aerosol-cloud interactions, better aerosol spectral optical properties including mixing states and aging, and the near-real-time (NRT) based aerosol loading data are worthwhile to be tried in the near future for fixing the intrinsic underestimation of precipitation in ITCZ and surface radiative fluxes in the desert and biomass burning area. |
| 英文关键词 | sensitivity test weather effects aerosol direct radiative forcing unilateral linearity |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Other Gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000564790200001 |
| WOS关键词 | AFRICAN EASTERLY JET ; OPTICAL-PROPERTIES ; GREENHOUSE GASES ; PREDICTION ; IMPACT ; CLIMATE ; SULFATE ; PARAMETERIZATION ; PRECIPITATION ; RESPONSES |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/325947 |
| 作者单位 | [Jeong, Gill-Ran] Korean Inst Atmospher Predict Syst, Applicat Diagnost Team, 35 Boramaero 5 Gil, Seoul 07071, South Korea |
| 推荐引用方式 GB/T 7714 | Jeong, Gill-Ran. Weather Effects of Aerosols in the Global Forecast Model[J],2020,11(8). |
| APA | Jeong, Gill-Ran.(2020).Weather Effects of Aerosols in the Global Forecast Model.ATMOSPHERE,11(8). |
| MLA | Jeong, Gill-Ran."Weather Effects of Aerosols in the Global Forecast Model".ATMOSPHERE 11.8(2020). |
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