• 2018 March 22 15:59

    Nitrogen deposition in the oceans needs further study

    Human activity increases the amount of nitrogen that reaches the oceans by 50%, on top of natural processes, according to a new report which assesses the magnitude and impacts of anthropogenic atmospheric nitrogen inputs to the ocean. 

    The study by the Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP), a United Nations advisory body, provides a new estimate of the extent that human beings are altering the cycling of nitrogen in the oceans. Extra nitrogen is reaching the oceans through rain or dust fall, as a result of fossil fuel burning and intensive agriculture.

    The natural process of nitrogen fixation is essential for life. Inert nitrogen gas in the earth’s atmosphere dissolves in the ocean, where it is converted into reactive nitrogen forms used by living marine organisms as nutrients for growth and development.

    However, too much extra nitrogen in particular ocean areas can cause problems such as algal blooms and the release of the greenhouse gas nitrous oxide.

    The atmospheric input of reactive forms of nitrogen to the ocean is now estimated to be almost four times that in 1850. In areas of high emissions to the atmosphere, such as in Southeast Asia, Europe and North America, human-induced increases in reactive nitrogen deposition to the ocean are proportionately higher.

    The report suggests that current human nitrogen emissions may remain relatively stable on a global basis through 2050, but more research is needed, particularly in the Northwest Pacific and Northern Indian Ocean. These are areas of the oceans that currently receive high inputs of atmospheric nitrogen and where there are also likely to be substantial changes in the future, with potential impacts at regional and global scales.  Areas of the Mediterranean and North Atlantic are also candidates for further research, due to the particular nature of the additional nitrogen deposition in those areas, influenced by different levels of phosphorus and iron. 

    The report, The Magnitude and Impacts of Anthropogenic Atmospheric Nitrogen Inputs to the Ocean, is published by the World Metrological Organization (WMO) and can be downloaded from the GESAMP website.




2019 September 18

18:26 SGRE confirmed member of the Dow Jones Sustainability Indices in 2019
18:03 MOL repays existing loans through issuance of project bond for FPSO charter project
17:48 Russia’s Rosmorrechflot and Ministry of Industry and Trade develop preferential leasing programme
17:30 Vympel DB develops concept design for Arctic cruise ship
17:22 Metal Shark delivers new foil-assisted catamaran excursion vessel to Pure Florida
17:11 US Coast Guard shifts response efforts in Bahamas
17:03 ECSA considers the European State Aid Guidelines for maritime transport highly successful and key to maintaining a strong European shipping sector
16:39 Vigor hosts keel-laying ceremony for the U.S. landing craft MSV(L)
16:21 Vitol announces long-term LNG time charter contract with H-Line
16:03 Despite some positive indicators, concerns remain for offshore energy underwriters, reports IUMI
15:42 Wärtsilä Denmark joins Digitalisation in Shipping: Europe 2019 as Associate Partner
15:24 USCG ends search for migrants of capsized vessel off Martinica Beach
15:03 GTT receives an order from HHI & SHI for the tank design of six Very Large Ethane Carriers
14:50 FSUE Atomflot develops project on construction of 7MW icebreaking tugboat
14:33 Hapag-Lloyd to increase rates from North East Asia to Australia
14:16 Wärtsilä simulators provide advanced training at newly inaugurated Portuguese facility
14:14 Ørsted contracts Van Oord for cable installation at Greater Changhua offshore wind farms
14:12 GTT obtains Approval in Principle for Arc7 ice class ships from Russian Maritime Register of Shipping
14:03 ABS and Samsung Heavy Industries sign digital technology
14:00 SAAM Towage contracts Damen for delivery of tug vessel
13:31 Discussion “Development of recreational crafts and high-speed passenger vessels” begins at Neva 2019
13:10 Wärtsilä launches the Wärtsilä 31SG pure gas engine for marine market applications
13:04 International Association of Ports and Harbors visited by ICHCA representatives
12:38 RS issues Approval in Principle for new GTT’s LNG containment systems
12:03 LR awards Jiangnan AiP for 91,000 m3 VLGC Panda 91T design.
11:49 ADNOC acquires 10% of VTTI
11:30 LNG-fueled tugboat Ishin undergoes 1st LNG bunkering trial in Port of Kobe
11:02 ABS and Samsung Heavy Industries to develop next generation LNG carrier
10:37 Training underway for Jeddah Maritime Information Sharing Centre
10:21 Panama Canal signs agreement with Port of Rotterdam
10:12 TGS announces strategic milestones to accelerate growth
09:44 Brent Crude futures price is down 0.09% to $64.49, Light Sweet Crude – down 0.44% to $59.08
09:15 Baltic Dry Index is down to 2,283 points
08:56 MABUX: Bunker Market this morning, Sept 18

2019 September 17

19:06 Rosmorrechflot’s shipbuilding order for coming six years foresees construction of 147 vessels
18:29 Lead chemical carrier of Project 00216М named PortNews after our agency
18:05 MPC Capital and ZEABORN strengthen HARPER PETERSEN by combining their shipbroking activities
17:24 MOL issues integrated 'MOL Report 2019'
16:35 Eagle Bulk Shipping takes delivery of M/V Sydney Eagle
16:02 CMA CGM and TFG launch Rhine valley rail to German hinterland
15:30 CMA CGM announces FAK rates from North Europe to New Zealand
15:02 Sembcorp Marine’s Brazilian shipyard completes Petrobras P-68 FPSO
14:56 CMA CGM strengthens its intra-European and Mediterranean offer with the launch of the Black Sea Marmara Morocco service
14:10 Hapag-Lloyd announces General Rate Increase for Trans-Pacific eastbound
13:10 Zadar Cruise Port is Port of the Year 2019
12:10 Port of Oakland refrigerated exports jump 20 percent in past year
11:51 Combined Task Force Commanders discussed their shared aims and goals in tackling the threat of piracy
11:34 Lars Thrane makes its Iridium Certus® debut with the LT-4200 maritime satcom system
11:22 Belfast Harbour reveals ambitious growth plans
11:00 Marine cargo market characterised by “accelerating change” as underwriters take action to address continuing unprofitability, says IUMI
10:34 Safety at Sea and BIMCO publish cyber security white paper
10:27 ABS and Keppel partner in developing the first two new build Drilling Rigs with Smart Notations
09:43 Greenland research vessel picks MAN hybrid propulsion package
09:32 Brent Crude futures price is down 0.87% to $68.42, Light Sweet Crude – down 1.24% to $61.89
09:16 Baltic Dry Index is down to 2,311 points
08:56 MABUX: Bunker market this morning, Sept 17

2019 September 16

18:04 Ports draw $5B investment, 12K jobs to Georgia
17:59 GOGL increases investment in Singapore Marine
17:50 Pella launched first serial trawler of Project 03095, Castor
17:25 Tenders on pilot projects for stevedoring company concessions in Olvia and Kherson ports officially announced