It’s day 7 and data collection and processing has been well underway. We are currently stationary at Lat 20N, Long 37W, waiting for the sun to rise to commence a buoy recovery/deployment. A buoy was already deployed yesterday, making this the second for the campaign.
Weather-wise we are also sitting in a very interesting region, on the eastern edge of a stationary front, product of an earlier northeaster. This same front is responsible for a gale warning in the central Atlantic (North of 25N) and conditions may be conductive to subtropical or tropical storm development as it moves to the northwest. The National Hurricane Center (NOAA-NHC) assigned this system a medium chance of becoming a tropical or subtropical cyclone in the next 48 hours. The center of this low is somewhat away from our location and represents no immediate threat (other than increasing wave heights) but we are monitoring it closely.
Quick synopsis of our ops: So far we have launched two ozonesondes and 22 radiosondes. The aerosol optical depth (AOD) from our sunphotometer measurements is quite low (~ 0.2 AOD as of November 16, although the increase in cloud cover prevented sunphotometer measurements yesterday (cloud cover associated to the stationary front, as previously discussed). The surface pressure has basically fluctuated from 1014-1016 hPa and winds have remained moderate (about 7.5 m/s). All of the aerosol instruments are reporting very low concentrations of large-sized aerosols in the area. Gas trace data shows average concentrations of nitrous oxides, carbon monoxide and surface ozone for this region.
Pretty much we have enjoyed of very nice and comfortable weather, that allow for a corona, a colorful sky during sunset and an opportunity for the ship’s crew to enjoy some recreational fishing.