GNOME comparison of ROMS and HFR

We uploaded a GNOME movie of the currents for PWS into the ftp site. The area is the HFR data coverage area.
There are two sets of currents, one from ROMS and the other from HFR. As you flip through the frames, the velocities on the finer grid is from ROMS, the current vectors on the coarser grid is from the HFR data at the same time.

The differences are obvious. We don't know which is closer to reality. In an actual spill of oil we would compare everything back to the how the oil was moving.


Glen Watabayashi
John Whitney

First drifter data hits the AOOS portal

Heads up, for those looking for initial drifter data from PWS, there are QTY(2) 40-meter and QTY(2) microstar data files posted. See: http://ak.aoos.org/aoos/fieldexp/data_by_pi-researcher.html (Ohlmann).

Direct access for recent data:

40-meter: http://penguin.sfos.uaf.edu/output/pws/Ohlmann/40_meter/ASCII/
microstar: http://penguin.sfos.uaf.edu/output/pws/Ohlmann/microstar/ASCII/

Thanks to the PWS team for deployment of the drifters and Carter handling the reception and processing of the 40 meter and microstar data.

From the plan:

"During the main study periods the drifters will be released at two sites 60 35N 146 56W and 60 47N 146 56W (Figure 9). The first location listed is where drifters were deployed in the 2004 experiment. The drifters will be deployed in two groups that contain at least three of each style of drifter except the 40 m drogued units, which will be deployed only at the southern location."

So, the 40m deployment location is 60 35N 146 56W. The microstars: "On July 20th the microstar drifters will be released between the two HF radar stations (~ station EW2 60 35.00N 146 40.00W)".

Drifter locations

So we see that the Vixen did deploy some drifters.
When and where were they deployed?
Were these surface or subsurface drifters.

Get us the info and we will do the modeling.

Glen Watabayashi
glen.watabayashi@noaa.gov

Drifters

John Whitney and I were looking for the lat-long positions where the drifters were going to be deployed. We couldn't find the info. Does anyone know where they will eventually go in? The thought is that while we wait out mother nature we can do some trajectory runs anyway.

Glen Watabayashi
(206)526-6324
glen.watabayashi@noaa.gov
john.whitney@noaa.gov

HFR data on National Server?

We don't see the HFR data showing up on the national server like the Upper Cook data was last month. We here in Seattle HAZMAT need it to show up on the national server to get the access we want to the data. This is what we agreed upon, right?

Glen Watabayashi (Bushy)
(206)526-6324
glen.watabayashi@noaa.gov

PWS Data & Model Visualization Made Public Via Google Earth and Cloud Computing

Applied Science Associates (ASA) has enabled public access to real-time data from the Prince William Sound (PWS) experiment through Google Earth. ASA is posting ROMS Data (Dr. Yi Chao), WRF Data (Dr. Peter Olsson), and HFRadar (Dr. Mark Johnson) plus ASA drifter simulations using these model data (sources: http://ak.aoos.org/aoos/fieldexp/data_by_pi-researcher.html). ASA has integrated data from PWS experiment's ocean observing systems and models to create Google Earth KML files which are hosted using Amazon cloud computing. Amazon S3 storage enables efficient distribution of large datasets by dividing the work among computers based in data centers around the globe.

The Google Earth link:
http://asascience_pws.s3.amazonaws.com/PWS_DATA.kml

New data sets are being added and improvements are being made all the time so be sure to check back regularly. Let us know if you have comments or suggestions: contact David Stuebe (of ASA)

Incoming data

The thermosalinograph was running today and I uploaded the data to AOOS. The connection was marginal at best, but it doesn't appear to be at this end. Do not use the data when the boat isn't moving. The engine needs to be in gear for water to flush through the system.

We will be trying to get back out in the morning and working near Cordova. The glider appeared to pass its tests so we hope to get it out in the morning.

Whoever wished for bad weather should be happy. Too bad we can't do much work in it.