First Mapping of Monthly and Diurnal Climatology of Saharan Dust Layer Height Over the Atlantic Ocean From EPIC/DSCOVR in Deep Space

Lu, Zhendong; Wang, Jun; Chen, Xi; Zeng, Jing; Wang, Yi; Xu, Xiaoguang; Christian, Kenneth E.; Yorks, John E.; Nowottnick, Edward P.; Reid, Jeffrey S.; Xian, Peng

doi:10.1029/2022gl102552

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First Mapping of Monthly and Diurnal Climatology of Saharan Dust Layer Height Over the Atlantic Ocean From EPIC/DSCOVR in Deep Space

2023
By Lu, Zhendong ; Wang, Jun ; Chen, Xi ; ...
Source: Geophysical Research Letters, 50(5)

[PDF-2.24 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Lu, Zhendong ; Wang, Jun ; Chen, Xi ; Zeng, Jing ; Wang, Yi ; ... More +

Lu, Zhendong ; Wang, Jun ; Chen, Xi ; Zeng, Jing ; Wang, Yi ; Xu, Xiaoguang ; Christian, Kenneth E. ; Yorks, John E. ; Nowottnick, Edward P. ; Reid, Jeffrey S. ; Xian, Peng Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research)
Description:

The monthly and hourly climatology of Saharan dust layer height over the Atlantic, at a spatial resolution of ∼10 km, is obtained for the first time, via a passive remote sensing technique. The technique is applied to multiple years of Earth Polychromatic Imaging Camera (EPIC) data collected at the Lagrange‐1 point, generating a climate data record (CDR) of aerosol optical centroid height (AOCH). This CDR offers unprecedented spatial coverage and diurnal sampling compared to spaceborne lidars (CALIOP and CATS). Our results show high correspondence with CALIOP data in domain‐averaged monthly variations and with CATS data in diurnal variations, respectively. A principal component analysis (PCA) reveals the dominant role of dust transport in regulating AOCH variation, whereas the impact of the boundary layer is less significant. MERRA‐2 and satellite retrievals respectively display zero and 200–1,000 m of diurnal variation of AOCH, highlighting the uniqueness of EPIC AOCH CDR in constraining climate models.
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(5)
DOI:

https://doi.org/10.1029/2022gl102552
ISSN:

0094-8276;1944-8007;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA21OAR4310249
License:

https://creativecommons.org/licenses/by-nc-nd/4.0/
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CC BY-NC-ND
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Library
Main Document Checksum:

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urn:sha256:a369af8e90f59d300de61a39491f8a3692530a400c8b78e39b6f411f884aa1d7
Download URL:

https://repository.library.noaa.gov/view/noaa/59334/noaa_59334_DS1.pdf
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