Archive for October 5th, 2009

Still much to do

Monday, October 5th, 2009

We've crossed into the cooler water and see a nice change in the currents.  Less than 950 km on the straight line.

091005_ru27_2_sst

Following the currents on today's altimeter map, its a just a bit over 1000 km.  Assuming the usual 20 km/day, thats 50 days.

091005_ru27_2_alt

But what has us most worried right now is that the glider vertical velocity is slowing down, just like it did earlier in the flight.  It likely means the same thing, barnacles are growing in the seams.  That means trying to stay cooler, and get to the pick up point as soon as we can.  We don't want to loose our ability to steer as we approach the recovery region, the most dangerous part of any mission.  We are flying into waters with extensive shipping and fishing that we need to avoid.  And the higher seas for winter are approaching.  We have much to do to get ready.

Weather group

Monday, October 5th, 2009

Good evening everyone

Justin and I have been looking into weather forecasts and archived weather data for the Spanish/Portuguese coast. There is one website, eurometeo.com that is an italian site Justin found that has many useful points of interest that range from climate averages to a hour by hour break down of weather conditions from today back through january 2002. Looking at the climate averages, temperatures for november range from 52-64 deg F and decembers average is about 60 and average rain fall is about 4 inches for both months. Looking at mid Nov- mid Dec of 2008 there was precipitation on most days, but there also seems to have been a lot of fog/haze which may cause a problem for going out and searching for 27.

For next week we will continue looking at day by day conditions for previous years to look for any evident patterns from the past few years and begin looking at wave heights for the area from oceanweather to start getting a feel for how the coast is acting.

Nilsen and Justin

Google Earth Update

Monday, October 5th, 2009

I (Dave) have briefed Chris and Jason on inputting data imagery into Google Earth and they will be practicing doing it themselves this coming week. We will also be assisting some of the other groups with inputting their data into Google Earth.

We will be looking in depth to Google Earth Pro, a more advanced/customizable version of the free Google Earth download. We will be researching the possibilities of inputting data into Google Earth Pro in x, y, and z coordinates for 3-dimensional manipulation of data inputs. The free Google Earth download only allows flat, 2-dimensional imagery inputs on the x plane which can be moved vertically along the y plane. Our ultimate goal with Google Earth Pro, if possible, would be to have detailed subocean-surface plots of our glider fleet missions and paths, primarily RU27 and drake.

Ships Group

Monday, October 5th, 2009

The shipping lanes have been put into google earth. The kmz file is on the Glider Fleet Resources page: http://marine.rutgers.edu/~kerfoot/slocum/gliders.php

Research is being done on the fishing grounds and screen shots are being taken of the ais data.

Waves group

Monday, October 5th, 2009

Hello all-

Melissa and I (Dani) have been looking at archived wave data from 2006 and 2007 and have been observing wave patterns. We also plan on looking at archived wave and meteorological data from 2008, and will look at real time data to make sure the archived data could accurately predict wave and wind patterns for October, November and December.

While observing the 2006 and 2007 wave data we immediately saw discrepancies. For example, in November 2007 the waves traveled north-northwest and their wave heights vary from 2 to 6 meters. In November 2006, however, the waves were much more turbulent; they traveled west-northwest and northwest and the wave heights went up to 14 meters. We want to further investigate why there so much of a difference between the waves, so we will look at archived weather data and look for winds and storms.

Drake Group Update

Monday, October 5th, 2009

In our meeting today we talked to Carlos about wind and temperature data. Also we emailed Professor Bryden about his research on 26 degrees North to see if he will help us out with advice or data on 26 degrees North.