| DOI: | 10.1002/grl.50567
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| 论文题名: | Do diurnal aerosol changes affect daily average radiative forcing? |
| 作者: | Kassianov E.; Barnard J.; Pekour M.; Berg L.K.; Michalsky J.; Lantz K.; Hodges G.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8870
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| EISSN: | 1944-8601
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| 出版年: | 2013
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| 卷: | 40, 期:12 | | 起始页码: | 3265
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| 结束页码: | 3269
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| 语种: | 英语
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| 英文关键词: | diurnal variability of aerosol
; remote sensing
; time-averaged direct aerosol radiative forcing
; Two-Column Aerosol Project (TCAP)
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| Scopus关键词: | Aerosol properties
; Direct aerosol radiative forcing
; Diurnal variability
; Ground-based data
; High temporal resolution
; Metropolitan area
; Radiative forcings
; Two-Column Aerosol Project (TCAP)
; Atmospheric radiation
; Errors
; Loading
; Optical properties
; Remote sensing
; Aerosols
; aerosol property
; air sampling
; diurnal variation
; error correction
; ground-based measurement
; industrial location
; optical property
; radiative forcing
; remote sensing
; urban region
; Cape Cod
; Massachusetts
; United States
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| 英文摘要: | Strong diurnal variability of aerosol has been observed frequently for many urban/industrial regions. How this variability may alter the direct aerosol radiative forcing (DARF), however, is largely unknown. To quantify changes in the time-averaged DARF, we perform an assessment of 29 days of high temporal resolution ground-based data collected during the Two-Column Aerosol Project on Cape Cod, which is downwind of metropolitan areas. We demonstrate that strong diurnal changes of aerosol loading (about 20% on average) have a negligible impact on the 24-h average DARF when daily averaged optical properties are used to find this quantity. However, when there is a sparse temporal sampling of aerosol properties, which may preclude the calculation of daily averaged optical properties, large errors (up to 100%) in the computed DARF may occur. We describe a simple way of reducing these errors, which suggests the minimal temporal sampling needed to accurately find the forcing. Key Points Strong sensitivity of 24-h forcing to under-sampled diurnal aerosol changes Simple approach for reducing errors associated with sparse temporal sampling ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880560315&doi=10.1002%2fgrl.50567&partnerID=40&md5=e35a2dba390facdafd0d98d8f3098bcc
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6134
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, PO Box 999, MSIN K9-24, Richland, WA 99352, United States
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| Recommended Citation: | |
Kassianov E.,Barnard J.,Pekour M.,et al. Do diurnal aerosol changes affect daily average radiative forcing?[J]. Geophysical Research Letters,2013-01-01,40(12).
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