Archive for October 12th, 2009

Half a tank left

Monday, October 12th, 2009

Drake made his turn to the Northeast on Sunday and is now heading up towards 26.5 N.  Most of the currents on this northeast leg are expected to be perpendicular to this path.  Drake can fly through these quite well - an advantage for a deep glider.

091012_drake_alt

Scarlet is also heading northeast, just like Drake.  The general plan is to head northeast up to 42 N.  We then turn east along 42 N, crossing into European waters at about 13.5 W.  We then have an area we can loiter between 13.5W and 12 W that appears to be relatively safe from the information we can get on our side.  The validity of this assumption will be a topic of discussion with our friends at Puertos del Estados later this week.  The total distance measured along the white dogleg from Scarlet's present position to 12 W is 660 km.

091012_ru27_alt

Zooming into Scarlet's location, we see a nice tail current is helping us along. The tail current is running about 10 cm/sec, and Scarlet's speed relative to the water is running about 20 cm/sec.  Dave increased her pitch again over the weekend.  We now are around 37-38 degrees, up from 35.  It gained us a few cm/sec in vertical velocity, which translates into a few more cm/sec in the horizontal based on our pitch angle. The change did increase our energy usage, moving it back up to 3.5 amp hours per day, but that is not the concern.  We still have exactly 50% of our calculated power left on board, so the additional power usage is ok.   We are racing the winter waves and the biological growth.

091012_ru27_alt_zoom

 

Baiona, Spain a small ocean port town with alot of history

Monday, October 12th, 2009

Despite the fact that RU-27's potential line of closest approach changed from 10W to12W now, plans to recover RU-27 out of Baiona, Spain have not changed. RU-27 will reach dry land again for the first time since her deployment on April 27,2009 in Baiona, Spain. However, this is not the first time that Baiona has been a part of a Trans-Atlantic crossing. On March 1st, 1493 Columbus' ship the Pinta returned to Baiona making the city the first to hear of the discovery of America. In commemoration of the historical voyage of the Pinta several monuments and plaques have been decicated to the Pinta in Baiona. A tiled map of the voyages of the Pinta and the Nina is placed on the arcade at A Ribeira promenades. Next to the tiled map is a plaque dedicated to the crew of the Pinta. At the foot of the wall of Monte Boi promenade is a granite sculpture called "The meeting of 2 Worlds," which represents the discovery of America by Columbus.

Tiled Map of the Pinta's and Nina's Voyage

Tiled Map of the Pinta's and Nina's Voyage

 

"The Meeting of 2 Worlds" Statue

"The Meeting of 2 Worlds" Statue

The town of Baiona, Spain is a small ocean port fishing  town with a population of approximately 11,337 people. Spanish is the official language Baiona, however Galician is spoken commonly in the town. The major of the town is Jesús Vázquez Almuiña.
Since Baiona, Spain is a small ocean port town amenities such as a Internet cafe and printing center are not available to print out all the letters that were written to RU-27 by school children, so it looks like the letters will have to mailed back to the school children from Madrid, the capital of Spain. Conversations are currently ongoing with a customs broker to determine the procedure to mail the batteries back to the United States.
Photographs are courtesy of Baiona.org
Logistics Group
Dakota, Al, Fillipa, and Nikki

“The sea was angry that day my friends…”

Monday, October 12th, 2009

"like an old man trying to send back soup in a deli!"

totals

It seems that the pick-up location for RU27 is right in the middle of some very treacherous waters. Large waves, fast winds, and wildly fluctuation currents are what lies ahead for Scarlet. You can see the changes in the surface currents in this kmz created with images from September 25th.

http://marine.rutgers.edu/~michaesm/GaliciaDaily.kmz

According to this twenty-four hour timespan of the Galicia Totals, current velocities seemed to pick up around noon and slow down around midnight. The predominant current direction where Scarlet is going to be picked up at is West-Northwest.

This week has been a great week for the Spain CODAR group. Two weeks ago, Josh got us access to the Puertos Del Estado (http://www.puertos.es/en/oceanografia_y_meteorologia/redes_de_medida/index.html) FTP server that contains all the Galicia HF Radar data. We were able to obtain all of the totals data from the past few weeks from this server. With the help of one of our international students, Al, we  were able to set up a script that downloads the newest totals.  The newest files are then imported into MATLAB and then outputted as a kml. Currently, the kml is updated every hour. The KML right now contains only white vectors. We are working on putting a timestamp into the kml, an option for black arrows, and also an average velocity overlay. Unfortunately, only one of the CODAR sites is currently functioning correctly in Spain so the coverage is very small. Hopefully, our colleagues in Spain can get their CODAR issues worked out soon so we can get back to analyzing the currents.

currents

You can find this kml at http://marine.rutgers.edu/~michaesm/GEarth_Codar/CurrentSpainTotals.kml

Adios,

Mike and Lisa

Scary Waves and Scary Winds…

Monday, October 12th, 2009

Hello all-

This is Dani and Melissa.  We have spent most of our time trying to convert PDF files to JPEGs, which Melissa figured out.  We can now show you Puertos del Estada's wave and wind data from November 2006.  These graphs are from here.

Wave Direction and Type in Silleiro: November 2006 

Wave Direction and Type in Silleiro: November 2006

Wind Directions in Silleiro: November 2006

Wind Directions in Silleiro: November 2006

 

Silleiro's East/West Wind Velocities in November 2006

Silleiro's East/West Wind Velocities in November 2006

Here, you notice that toward the end of November, wind velocities reach 15 m/s, wind directions rapidly change from west to north, and waves reach 12 m.  This year shows an obvious correlation of wind and waves: if winds are strong, waves are high

26 degrees N info for Drake

Monday, October 12th, 2009

This week Marcus and Kaycee looked at the data on the Rapid Climate Change website. We uploaded the data into Matlab and made a plot for Thermocline Recirculation for 0-1100 m:

Awesome data!

Awesome data!

There is a lot of data available on this website that could be useful to our flight planning or to compare our sensors to including conductivity, temperature, and depth from CTD's, current meter, and depth pressure data from the moorings.

"Data from the RAPID-WATCH MOC monitoring project are funded by the Natural Environment Research Council and are freely available from www.noc.soton.ac.uk/rapidmoc."