3 Results and Discussion
The studies lasted between 17 and 27 July 2012. During this period good photometric conditions, i.e. with no or small number of scattered clouds were observed
only on 17, 18, 20 and 21 July. Therefore, in the reminder of the paper only these
days have been further analyzed. The wind and sea wave conditions at the study site
on these days are presented in Table 1.
During these days the air masses arrived from the westerly sectors. The air mass
back trajectories calculated using the NOAA HYSPLIT Model are presented in
Fig. 2.
It is clear that during all days the air masses were advected over the CRS in
Lubiatowo from the north-westerly directions at all three altitudes above the sea
level (500, 1,500 and 3,000 m). Wind speeds were relatively high, especially the
wind gusts were at the same level or even slightly increasing. These conditions
lasted for 5 days resulting in waves of heights around 2 m or even higher, which
were breaking in the area, creating a wide breaking zone (over 500 m wide). In such
conditions sea salt production is enhanced and this could be seen with the AOD
values.
3.1 17 July 2012
On 17 July 2012 a large storm cloud system developed over the northern Poland,
which resulted in mild rains lasting until noon. Thus on that day the Microtops II
measurements at the CRS station in Lubiatowo were made every 30 min after 14:15
UTC. The average daily AOD at 500 nm was up to 0.154 and Ängström exponent
of about 0.8 (Fig. 3).
Analyses of the MODIS (The Moderate Resolution Imaging Spectroradiometer)
(not shown) pictures from both the Terra and Aqua instruments reveal large cloud
systems over and the AOD at 500 nm not exceeding 0.2.
Table 1 Wind and sea wave conditions at the station in Lubiatowo on 4 selected measurement
days
Date
Wind speed [min–
max] (m/s)
Wind gust [min–
max] (m/s)
Significant wave
height (m)
Maximum wave
height (m)
17.07
1–7
2 –16
1–1.5
1.5–2
18.07
1–6
2 –16
1–1.8
1.5–3
20.07
2–8
4 –18
1–2
1.5–3
21.07
2–6
4 –14
1–1.5
1.5–2.2
Impact of Breaking Waves on Sea Salt Production …
11
The studies lasted between 17 and 27 July 2012. During this period good photometric conditions, i.e. with no or small number of scattered clouds were observed
only on 17, 18, 20 and 21 July. Therefore, in the reminder of the paper only these
days have been further analyzed. The wind and sea wave conditions at the study site
on these days are presented in Table 1.
During these days the air masses arrived from the westerly sectors. The air mass
back trajectories calculated using the NOAA HYSPLIT Model are presented in
Fig. 2.
It is clear that during all days the air masses were advected over the CRS in
Lubiatowo from the north-westerly directions at all three altitudes above the sea
level (500, 1,500 and 3,000 m). Wind speeds were relatively high, especially the
wind gusts were at the same level or even slightly increasing. These conditions
lasted for 5 days resulting in waves of heights around 2 m or even higher, which
were breaking in the area, creating a wide breaking zone (over 500 m wide). In such
conditions sea salt production is enhanced and this could be seen with the AOD
values.
3.1 17 July 2012
On 17 July 2012 a large storm cloud system developed over the northern Poland,
which resulted in mild rains lasting until noon. Thus on that day the Microtops II
measurements at the CRS station in Lubiatowo were made every 30 min after 14:15
UTC. The average daily AOD at 500 nm was up to 0.154 and Ängström exponent
of about 0.8 (Fig. 3).
Analyses of the MODIS (The Moderate Resolution Imaging Spectroradiometer)
(not shown) pictures from both the Terra and Aqua instruments reveal large cloud
systems over and the AOD at 500 nm not exceeding 0.2.
Table 1 Wind and sea wave conditions at the station in Lubiatowo on 4 selected measurement
days
Date
Wind speed [min–
max] (m/s)
Wind gust [min–
max] (m/s)
Significant wave
height (m)
Maximum wave
height (m)
17.07
1–7
2 –16
1–1.5
1.5–2
18.07
1–6
2 –16
1–1.8
1.5–3
20.07
2–8
4 –18
1–2
1.5–3
21.07
2–6
4 –14
1–1.5
1.5–2.2
Impact of Breaking Waves on Sea Salt Production …
11