Accession Number:

ADA582101

Title:

Sea Spray and Icing in the Emerging Open Water of the Arctic Ocean

Descriptive Note:

Annual rept. 15 Jun 2012-14 Jun 2013

Corporate Author:

NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA

Personal Author(s):

Report Date:

2013-06-17

Pagination or Media Count:

7.0

Abstract:

With the sea ice cover in the Arctic Ocean declining, the more extensive areas of open water will foster more frequent storms, higher winds, and bigger waves. These conditions can create copious amounts of sea spray. We anticipate that structures placed in shallow water wind turbines or drilling rigs, for instance will, therefore, experience more episodes of freezing spray that will create hazards for both personnel on these structures and for the structures themselves. Few observations, however, have been made of sea spray generation in high winds above, say, 15 20 ms and no spray observations have been made in freezing temperatures. Our objective is, thus, to observe the size distribution and rate of creation of spray droplets at air temperatures below freezing and in winds above 15 ms and, preferably, above 20 ms. Climatologically, Mt. Desert Rock, a small, well exposed island 24 miles into the Atlantic Ocean from Bar Harbor, Maine, seemed to provide just such conditions in January. Andreas and collaborator Kathy Jones thus spent most of January 2013 observing sea spray and measuring relevant meteorological and ocean conditions on Mt. Desert Rock. We are in the early stages of data analysis but did encounter frequent winds near 20 ms and temperatures below freezing during our deployment.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE