Locally enhanced aerosols over a shipping lane produce convective invigoration but weak overall indirect effects in cloud-resolving simulations

Blossey, Peter N.; Bretherton, Christopher S.; Thornton, Joel A.; Virts, Katrina S.

doi:10.1029/2018GL078682

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Locally enhanced aerosols over a shipping lane produce convective invigoration but weak overall indirect effects in cloud-resolving simulations

2018
By Blossey, Peter N. ; Bretherton, Christopher S. ; Thornton, Joel A. ; ...
Source: Geophysical Research Letters 45(17): 9305-9313, 2018

[PDF-1.11 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Blossey, Peter N. ; Bretherton, Christopher S. ; Thornton, Joel A. ; Virts, Katrina S.

Blossey, Peter N. ; Bretherton, Christopher S. ; Thornton, Joel A. ; Virts, Katrina S. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)

OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) Less -
Description:

The effect of aerosol emissions from an active shipping lane in the Indian Ocean is simulated using an idealized framework in a cloud‐resolving model. Increased aerosol concentrations over the modeled shipping lane lead to increased cloud droplet number, cloud liquid mass, ice hydrometeor mass, and simulated radar reflectivity. The invigoration of deep convection induces mesoscale uplift and increased precipitation over the shipping lane. A predicted increase in the prevalence of both strong updrafts and radar echoes aloft is suggestive of enhanced lightning activity over the shipping lane, as observed in a recent study. Cloud radiative effects, both shortwave and longwave, are intensified over the shipping lane, but the change in the net radiative flux at top of atmosphere is not significantly different from zero.
Keywords:

[+]

Aerosols Clouds Shipping
Source:

Geophysical Research Letters 45(17): 9305-9313, 2018
DOI:

https://doi.org/10.1029/2018GL078682
Document Type:

Journal Article
Funding:

Grant no. NA13OAR4310104
Place as Subject:

Indian Ocean
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Other
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Submitted
Main Document Checksum:

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urn:sha256:d2cca62e1ce691abd858800cea81a301865c132ae4b34d288db7d7369d015c55
Download URL:

https://repository.library.noaa.gov/view/noaa/28213/noaa_28213_DS1.pdf
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Locally enhanced aerosols over a shipping lane produce convective invigoration but weak overall indirect effects in cloud-resolving simulations

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