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mdpetters committed Mar 6, 2024
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2 changes: 1 addition & 1 deletion Episode007.md
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Expand Up @@ -14,7 +14,7 @@ During CAESAR we have the opportunity to sample aerosol close to the sea surface

**Figure 2.** Picture of the sea state sampling inside the boundary layer during CAESAR at a wind speed of 17 m/s. The white areas are regions of wave breaking and sea spray production.

Using a combination of three aerosol size spectrometers we are able to characterize and constrain the aerosol size distribution from 10 to 4000 nm. On one of the flights we sampled aerosol at an altitude of 750 m above ground level for a period of 10 min at wind speed exceeding 20 m/s. Total aerosol number concentration varied between ~200 and ~400 cm⁻³ and were positively correlated with wind speed. The size distribution shows three main modes, one at ~20 nm, one at ~150 nm, and one at ~2000 nm.
Using a combination of three aerosol size spectrometers we are able to characterize and constrain the aerosol size distribution from 10 to 4000 nm. On one of the flights we sampled aerosol at an altitude of 750 m above ground level for a period of 10 min at wind speed exceeding 20 m/s. Total aerosol number concentration varied between 200 and 400 cm⁻³ and were positively correlated with wind speed. The size distribution shows three main modes, one at 20 nm, one at 150 nm, and one at 2000 nm.

![Sea spray leg](/assets/sea_leg.png)

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2 changes: 1 addition & 1 deletion __site/Episode007/index.html
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Expand Up @@ -82,7 +82,7 @@ <h3 class="author__name" itemprop="name">Cold-Air Outbreak Experiment</h3>
<p>During CAESAR we have the opportunity to sample aerosol close to the sea surface and during high wind speeds associated with storms of the cold air outbreaks. </p>
<p><img src="/assets/sea_state.jpg" alt="Sea state" /></p>
<p><strong>Figure 2.</strong> Picture of the sea state sampling inside the boundary layer during CAESAR at a wind speed of 17 m/s. The white areas are regions of wave breaking and sea spray production. </p>
<p>Using a combination of three aerosol size spectrometers we are able to characterize and constrain the aerosol size distribution from 10 to 4000 nm. On one of the flights we sampled aerosol at an altitude of 750 m above ground level for a period of 10 min at wind speed exceeding 20 m/s. Total aerosol number concentration varied between ~200 and ~400 cm⁻³ and were positively correlated with wind speed. The size distribution shows three main modes, one at ~20 nm, one at ~150 nm, and one at ~2000 nm. </p>
<p>Using a combination of three aerosol size spectrometers we are able to characterize and constrain the aerosol size distribution from 10 to 4000 nm. On one of the flights we sampled aerosol at an altitude of 750 m above ground level for a period of 10 min at wind speed exceeding 20 m/s. Total aerosol number concentration varied between 200 and 400 cm⁻³ and were positively correlated with wind speed. The size distribution shows three main modes, one at 20 nm, one at 150 nm, and one at 2000 nm. </p>
<p><img src="/assets/sea_leg.png" alt="Sea spray leg" /></p>
<p><strong>Figure 3.</strong> Measured aircraft altitude, wind speed, and total aerosol number concentration &#40;left plots, top-to-bottom&#41;. The size distribution &#40;right&#41; is measured by a scanning mobility particle sizer &#40;SMPS&#41;, an Ultra-High Sensitivity Aerosol Spectrometer &#40;UHSAS&#41;, and a Passive Cavity Aerosol Spectrometer Probe &#40;PCASP&#41;. </p>
<p>Samples at high wind speed and over the remote ocean are rare and thus critical for understanding the sea spray source function and how sea spray controls the boundary layer aerosol budget. Analyzing observations from the size spectrometers in more detail and across multiple research flights will help us quantify the contribution of sea spray emissions to the boundary layer particle burden and the influence of these particles on clouds over this region. </p>
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