Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028949 |
Heterogeneous Ice Nucleation in the Tropical Tropopause Layer | |
Jensen, Eric J.1; Kaercher, Bernd2; Ueyama, Rei1; Pfister, Leonhard1; Bui, Theopaul V.1; Diskin, Glenn S.3; DiGangi, Joshua P.3; Woods, Sarah4; Lawson, R. Paul4; Froyd, Karl D.5,6; Murphy, Daniel M.7 | |
2018-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:21页码:12210-12227 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | Recent laboratory experiments have advanced our understanding of heterogeneous ice nucleation at low temperatures. We use these laboratory results, along with field measurements of aerosol composition, to constrain a parameterization of heterogeneous nucleation rate dependence on temperature and supersaturation. We apply this nucleation parameterization in detailed simulations of transport and cloud formation in the Tropical Tropopause Layer (TTL,similar or equal to 14-18 km) constrained by high-altitude aircraft measurements of TTL cirrus microphysical properties and supersaturation. The model results indicate that if the abundant TTL organic-containing aerosols were effective glassy ice nuclei (IN), as indicated by laboratory experiments with simple sugars/acids, then heterogeneous nucleation would prevent the occurrences of large ice concentrations and large ice supersaturations, both of which are clearly indicated by the in situ observations. If glassy organic aerosols are relatively poor IN, as indicated by laboratory experiments with more atmospherically relevant secondary organic aerosol-like composition, then the simulated ice concentrations and supersaturations are in reasonable agreement with the observations. Concentrations of effective mineral dust or ammonium sulfate IN larger than about 50/L can drive significant changes in cirrus microphysical properties and occurrence frequency. The cloud occurrence frequency can either increase or decrease, depending on the efficacy and abundance of IN added to the TTL. Relatively low TTL concentrations of mineral dust particles (<= 10 L-1 indicated by the limited available field measurements) have negligible impact on cirrus frequencies or microphysical properties. Given the assortment of uncertainties, meaningful estimates of TTL aerosol-cirrus indirect effects on radiative forcing are likely not possible at this time. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452001400025 |
WOS关键词 | STRATOSPHERIC WATER-VAPOR ; CIRRUS CLOUD FORMATION ; MICROPHYSICAL PROPERTIES ; UPPER TROPOSPHERE ; ATMOSPHERIC AEROSOLS ; SUBVISIBLE CIRRUS ; GLASSY AEROSOLS ; PART II ; PARTICLES ; NUCLEI |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31995 |
专题 | 气候变化 |
作者单位 | 1.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA; 2.Deutch Zentrum Luft & Raumfahrt, Oberpfaffenhofen, Germany; 3.NASA, Langley Res Ctr, Hampton, VA 23665 USA; 4.Spec Inc, Boulder, CO USA; 5.NOAA, Earth Syst Res Lab, Boulder, CO USA; 6.Cooperat Inst Res Environm Sci, Boulder, CO USA; 7.NOAA, Chem Sci Div, Earth Syst Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Jensen, Eric J.,Kaercher, Bernd,Ueyama, Rei,et al. Heterogeneous Ice Nucleation in the Tropical Tropopause Layer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(21):12210-12227. |
APA | Jensen, Eric J..,Kaercher, Bernd.,Ueyama, Rei.,Pfister, Leonhard.,Bui, Theopaul V..,...&Murphy, Daniel M..(2018).Heterogeneous Ice Nucleation in the Tropical Tropopause Layer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(21),12210-12227. |
MLA | Jensen, Eric J.,et al."Heterogeneous Ice Nucleation in the Tropical Tropopause Layer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.21(2018):12210-12227. |
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