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Hg cycling in Arctic
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2021
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USCGC Healy
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Project Title: |
Collaborative Research: Constraining the role of chemical transformations on the cycling of mercury at the Arctic Ocean air-sea interface |
Project Status: |
Submitted |
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Principal Investigator: |
Robert P. Mason, UCONN |
Project Institution: |
FIU |
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Project ID: |
106271 |
Version #: |
3 |
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Date Submitted: |
8/24/2018 11:09:00 AM |
Created By: |
David Kadko |
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Date Last Modified: |
11/12/2020 9:41:00 PM |
URI Serial #: |
None |
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Funding Agencies: |
NSF/OPP/ARC - 1854462 - Funded |
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Summary of Field Work: |
We propose to test our hypothesis that gas evasion of Hg0 is not the primary sink for water column Hg in the Arctic Ocean, in contrast to other oceans. Additionally, we hypothesize that the relatively low net production of Hg0 in the Arctic reflects lower UV light levels and ice cover, low productivity and bioavailable HgII for reduction. To validate these hypotheses, we have defined a list of objectives, including the measurement of the dissolved Hg0 in surface waters, the atmospheric Hg speciation at high resolution, and the associated required ancillary measurements including water column Hg speciation. The cruise will consist of a transect from open water, through the marginal ice zone and into completely covered ice regions. We will perform CTD casts to depths of 100m to collect water for Hg species and radon-222 and radium-226. The timing of the cruise is to be late spring during when ice is receding and significant Hg deposition to the ocean surface occurs. |
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Summary of Facility Requirements: |
CTD rosette with 30L bottles
Small boat operations for shallow (1m) samples
Snow and ice sampling |
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Summary of other requirements and comments: |
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Type of Request: |
Primary Ship Use |
Request Status: |
Submitted |
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Request ID: |
1010119 |
Created By: |
David Kadko |
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Date Last Modified: |
9/6/2018 1:43:00 PM |
Date Submitted: |
8/24/2018 11:09:00 AM |
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Year: |
2021
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Ship/Facility: |
USCGC Healy
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Optimum Start Date:
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5/27/2021 |
Dates to Avoid: |
Earlier would not allow ice-free studies.
Later would lose the important spring Hg cycle |
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Earliest Start Date: |
5/24/2021 |
Multi-Ship Op: |
No |
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Latest Start Date: |
6/1/2021 |
Other Ship(s): |
N/A |
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Operating Days Needed: |
Science Days |
Mob Days |
De-Mob Days |
Estimated Transit Days |
Total Days |
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10 |
2 |
2 |
10 |
24 |
Repeating Cruise?
(within same year) |
No |
Interval: |
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# of Cruises: |
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Description of Repeating cruise requirements: |
N/A |
Justification/Explanation for ship choice, dates,
conflicts, number of days & multi-ship operations: |
N/A |
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Short Description of Op Area
for use in schedules: |
Chukchi Sea |
| Description of Op Area: |
Bering sea to Chukchi Sea |
| Op Area Size/Dia.: |
track of 1000 km |
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Lat/Long |
Marsden Grid |
Navy Op Area |
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Beginning
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Ending
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Show Degrees Minutes |
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Foreign Clearance Required? |
No |
Coastal States:
US EEZ |
 Important Info on Foreign Research Clearances
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Are you or any member in your science party bringing in any science equipment items which are regulated for export by the International Traffic in Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR)?
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No |
If yes, have you applied for the necessary permits through your export control office?
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No |
| Questions about ITAR/EAR regulations?
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Comments about foreign clearance requirements or
description of any other special permitting requirements
(e.g., MMPA, ESA, IHA, Marine Sanctuaries, etc.) |
N/A |
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Requested Start Port |
Intermediate Port(s) |
Requested End Port |
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Dutch Harbor, AK, USA |
None, |
Dutch Harbor, AK, USA |
Explanation/justification for requested
ports and dates of intermediate stops
or to list additional port stops |
Dutch Harbor is closest to our work site |
Important Info on Working in Foreign Ports
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Chief Scientist: |
Robert P. Mason, UCONN |
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# in Science Party |
12 |
# of different science teams |
2 |
# Marine Technicians to be
provided by ship operator:
(include in science party total)
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2 |
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Explanation of Science Party Requirements and Technician Requirements |
This is the amount to fulfill our sampling and analytical needs |
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 Dynamic Positioning | ADCP | Multibeam | Seismic |
| Dredging/Coring/Large Dia. Trawl Wire | Stern A-frame | Fiber Optic (.681) | 0.680 Coax Wire |
| SCUBA Diving | Radioisotope use - briefly describe |  NO Radioisotope use/Natural level work | Other Operator Provided Inst. - Describe |
| 0 PI-Provided Vans - briefly describe | MOCNESS | | |
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Explain Instrumentation or Capability
requirements that could affect choice
of ship in scheduling. |
N/A
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Explain Major Ancillary Facilities
Requirements and list description
and provider for "other" systems. |
N?A |
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