sail-world.com
 
 
News Home Cruising Australia Cruising USA Cruising Canada Boats for Sale Sail-World Racing Photo Gallery FishingBoating
Video Gallery Newsletters
Sail-World.com : Leisure sailors wanted to help track effects of climate change
Leisure sailors wanted to help track effects of climate change


'Secchi disk - simple to make at home. Watch the video below for explanation'    .

This is your chance to do something valuable while you sail. As a leisure sailor you and other seafarers are being encouraged to take part in a unique global study to record the effects of climate change, using a simple piece of equipment you can make yourself at home and an iPhone or Android free app.

Secchi free app for iPhone or Android -  .. .  

To explain, the marine phytoplankton account for approximately 50% of all photosynthesis on Earth and, through the plankton food web that they support, they both underpin the marine food chain and play a central role in the global carbon cycle strongly influencing the Earth’s climate.

Living at the surface of the sea the phytoplankton are particularly sensitive to changes in sea surface temperature. A recent study of global phytoplankton abundance over the last century concluded that global phytoplankton concentrations have declined due to rising sea surface temperatures as a consequence of current climate change.

We need to know much more about these changes and you can help by making a simple piece of scientific equipment called a Secchi Disk and using the Secchi App.

The public science project will measure the amount of phytoplankton, minute organisms at the very start of the marine food chain, currently residing in the world’s oceans. Scientists fear the population of the microscopic beings is in decline due to rising sea temperatures and, if true, that could have consequences for every aspect of marine life.

The project is being spearheaded by Plymouth University’s Marine Institute, which hopes to build a map of the oceans that charts the seasonal and annual changes of phytoplankton from now and into the future.

Plankton biologist Dr Richard Kirby, who is leading the study, said: 'As the phytoplankton live at the surface of the sea they are being affected by rising sea temperatures due to climate change. A scientific paper published last year suggested the ocean's plankton population had declined by as much as 40 per cent since 1950 as sea temperatures had warmed due to climate change.

'The scientists suggested that a warming of the ocean surface may have reduced vertical mixing of the water column thereby reducing the supply of nutrients from deeper waters – in effect the input of fertiliser to the surface had lessened with effects upon phytoplankton growth.

'Their results provoked debate among marine scientists however, some who thought they saw no change, or even an increase in phytoplankton in some places. Since the phytoplankton begin the marine food chain, we need to know more about if, how, and why they are changing in order to understand the effects on the ocean's biology.'

To check the levels of phytoplankton in our oceans, marine experts have developed a free smart phone app for sailors and fishermen to use wherever they are in the world. Because the phytoplankton – each thinner than a strand of human hair – exist at the sea’s surface, mariners can carry out a simple experiment using an easy to make ‘Secchi Disk’.

The Secchi Disk, simple to make at home:

Attached to a measuring tape, the Secchi Disk is lowered over the side of a boat and the depth at which it disappears from sight estimates the amount of phytoplankton in the sea. This depth can then be uploaded to a database using the Secchi app.

Dr Kirby added: 'The Secchi Disks are still used by marine scientists to study phytoplankton but there are too few scientists to survey the world's oceans as well as we would wish. This app enables seafarers around the world to take part in a science project and if we can just get a small percentage of the global population of sailors involved, we can generate a database that will help us understand how life in the oceans is changing. It would help us learn much more about these important organisms at a crucial time when their habitat is altering due to climate change.'

Secchi screen menu -  .. .  
The Secchi App on iPhone or Android:
The Secchi app has been developed by Dr Nicholas Outram and Dr Nigel Barlow, from Plymouth University’s School of Computing and Mathematics, and the database will be maintained by Pixalytics Ltd, a company founded by Dr Sam Lavender, an Honorary Reader at the University.

A major design consideration of the apps is that they have to be able to operate in places where the phone has no Internet connection. Participants record as many Secchi readings as they like, and these are stored as 'pending readings' on the phone. Exactly how many pending readings can be stored depends on the capabilities of the phone, but the number is very large. These pending readings can be uploaded at a later date when an Internet connection is available.

In addition, the app has an easy to follow workflow to minimise errors. The participant’s location is taken from the phone’s GPS, eliminating transcription errors. The user interface has been designed to be clean, intuitive and uncluttered, and in particular to be a UI that works on a boat at sea. Small and fussy layouts are not used, and the 'depth disk' uses a logarithmic scale to enable shallow depths to be entered quickly and accurately.

The free app is called Secchi after Father Pietro Angelo Secchi, an astronomer who invented the disk device in 1865 to measure water turbidity in the Mediterranean. You can find out more about the project at www.secchidisk.org.

To see how to make and use a simple Secchi disk, watch the video below:



About the Ocean Cruising Club, who kindly provided the information for this story:
The Ocean Cruising Club is an international club for cruisers and is well worth joining, particularly for roving cruising sailors. The distinctive blue and yellow burgee with a stylized Flying Fish is a welcome and respected sight in any anchorage. The Club, known affectionately as the OCC, exists to promote long-distance cruising in all its forms. It has no premises, regarding the oceans of the world as its clubhouse. However, it enjoys visitors' rights with a number of major clubs world-wide. For more information go to its website.


by Daria Blackwell, Ocean Cruising Club/Sail-World

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=109561

8:31 PM Thu 16 May 2013GMT


Click here for printer friendly version
Click here to send us feedback or comments about this story.







Sail-World Cruising News - local and the World

Waves within waves by Leslie G. Baehr
Scientists have a name for this phenomenon—internal waves. By definition, internal waves occur in the deep, well beyond people’s purview. Scientists have generated miniature internal waves in small tanks in the lab, but out in the wild, they’re as elusive as a white horse in a snowstorm. ... [more]  

The Atlantic hurricane season will officially end on November 30, and will be remembered as a relatively quiet season as was predicted. Still, the season afforded NOAA scientists with opportunities to produce new forecast products, showcase successful modeling advancements, and conduct research to benefit future forecasts. Improved model, new surge forecast products and research projects debuted. ... [more]  

The second edition of this alternative route to the traditional ARC route saw 50 yachts and over 200 crew enjoy the same great activity programme before and after their ARC crossing, but also an interesting and enjoyable stopover on São Vicente, one of the less visited of the Cape Verde islands. Crews were full of praise for ARC+ route, now an integral part of the Atlantic Rally for Cruisers. ... [more]  

The Cruising Yacht Club of Australia has received overwhelming support for its Parade of Sail, to be held prior to the Rolex Sydney Hobart Yacht Race on December 26, and staged in honour of the 70th Hobart and the Club’s 70th anniversary. ... [more]  

Over the past 30 years, the Arctic has warmed more than any other region on Earth. As sea ice continues to thin and melt, understanding the rapid changes going on in this sensitive part of the world and its ecosystems becomes even more crucial. The new vehicle, called Nereid Under Ice (NUI), is remotely operated by pilots aboard a surface ship via a lightweight, micro-thin, fiber-optic tether. ... [more]  

Tabor Boy - A century of service by Capt. James E. Geil
The history of Tabor Boy, the 92-foot flagship of coeducational Tabor Academy, in Marion, Massachusetts, is that of a working vessel. Although she was designed and built in 1914 to support the commercial shipping trade, Tabor Boy’s real calling turned out to be teaching young people about life and the sea. ... [more]  

The Gunboat 55 has been crowned Cruising World’s 2015 Domestic Boat of the Year. The publication’s annual competition is judged by a panel of independent judges. This year’s judges, Tim Murphy, Ed Sherman and Mark Schrader, were unanimous in their praise and selection. ... [more]  

In 2013, over 955,000 boats changed hands on the pre-owned boat market. That meant for a nearly a million boat buyers, hiring an accredited marine surveyor to inspect their potential dreamboat was often the first step after finding it. ... [more]  

In a world first study researchers have found a coral-eating fish that disguises its smell to hide from predators. 'For many animals vision is less important than their sense of smell,' says study lead author Dr Rohan Brooker from the ARC Centre of Excellence for Coral Reef Studies (Coral CoE) at James Cook University. ... [more]  

Writing in the Journal of Animal Ecology the authors set out to answer important and fundamental questions on how life in the ocean will respond to projected changes in the coming decades. Despite evidence of increasing acidification of the world's oceans, questions remain over whether marine species will be able to adapt to these changing conditions. ... [more]  

By studying the colour of seabird guano in the infrared part of the spectrum the researchers from British Antarctic Survey (BAS), University of Cambridge and University of Edinburgh were able to identify and isolate the poo's unique spectral signature from bare rocks and snow. ... [more]  

Sail-World is now live testing the changed website format. If you are using this format for the first time, please scroll to the bottom of the site and check that your region is set for your region and not some other. It can be correctly set up using the drop down boxes. Then go to the top, click refresh, and you should be away. ... [more]  

Oceanographer Bob Pickart will never forget his first cruise aboard Woods Hole Oceanographic Institution’s (WHOI) research vessel Knorr. It was February 1997, and the ship was headed to the fierce Labrador Sea in the dead of winter. Sailing into the teeth of wintry conditions was the whole point of the 47-day research cruise. ... [more]  

Fifty-five years ago, the group of twelve nations who’d been involved in the International Geophysical Year of 1957 signed the Treaty. The Treaty has ensured that Antarctica remains a natural reserve, devoted to peace and science. ... [more]  

Scientists urge protection of world's deltas by Woods Hole Oceanographic Institution
Extensive areas of the world’s deltas — which accommodate major cities such as Shanghai, Dhaka and Bangkok — will be drowned in the next century by rising sea levels, according to a Comment piece in this week’s Nature. ... [more]  

The BBC has reported that nine Somali pirates should get thousands of Euros because they were not immediately brought before a French judge, the court ruled. One is to get 9,000 Euros (£7,000) and the others sums of up to 7,000 Euros. The judges faulted France for keeping them in custody for an extra 48 hours. ... [more]  

Yacht lost on Majuro by John Martin
Monday morning I awoke early and watched the sky grow light listening to the quiet morning sounds here in our anchorage off the island of Eneko. At 7:30 the cruiser’s net anchor started off with the usual good morning, and she asked if there was any emergency traffic. ... [more]  

When we taught the intense 12-week Professional Mariner Program at the Chapman School of Seamanship, top priority the first week was to get each student into a mindset where they inspected a boat from stem to stern before casting off and after they tied up. Note the dual inspections. Bookends if you will. Before sailing; after sailing. Every time. ... [more]  

Leopard by Finland crossed the finish line in Rodney Bay Saint Lucia this morning at 01:09:51 UTC (02/12 21:09:51 Local time) smashing the ARC Course Record by 2 days 6 hours 45 minutes and 19 seconds. Sailing across the Atlantic from Las Palmas de Gran Canaria to Rodney Bay, Saint Lucia in a total of 8 days 14 hours, 39 minutes and 51 seconds. ... [more]  

Fort Lauderdale greets Oceans of Hope yacht by Sailing Sclerosis Foundation
Oceans of Hope sailed into Fort Lauderdale this morning at 11:00 a.m. local time to an enthusiastic dockside audience awaiting their arrival. Cheers ensued, horns blared and the crew looked happy to arrive in the tropical landscape of Florida. It has been a long and arduous journey for some, including Christina Lamb Sidell, who joined the Oceans of Hope crew several weeks ago in New Jersey. ... [more]  

As I look back over nearly 40 years of sailing around Mediterranean waters I can't help but reflect on time passing by. 'Isn't it a bit like painting the Forth Bridge?' a friend asked of my pottering around looking at harbours and anchorages. ... [more]  

Try as you might, it just won’t work. Ropes are for pulling, and pulling alone. Similarly, most things on a boat and in a rig have a specific job to do and hence reason for the way they’re designed. Form follows function, after all. So with this adage firmly in mind, let’s see what Sydney Rigging Specialists have been up to and why they stick to this theory, like rust marks on a trusty kite. ... [more]  

2014 has truly been an Odyssey year, as our boats have criss-crossed the Atlantic on epic journeys, starting in January when the Atlantic Odyssey II yachts sailed from La Palma to Grenada, and followed by the summer adventure of the Blue Planet Odyssey yachts up in the High Arctic attempting the transit of the North West Passage. ... [more]  

Sailing within the ARC+ fleet, Alubat Cignale 18 Eleonora 2 crossed the ARC+ finish line at 07:38:46 local time after a fast 2100NM passage from Mindelo in the Cape Verde Islands. The international crew on board were in great spirits having enjoyed their 12 days at sea and are now looking forward to experiencing the delights of the Caribbean. ... [more]  

Every year, thousands of people suffer from CFP, a poisoning syndrome caused by eating toxic reef fish. CFP symptoms are both gastrointestinal and neurological, bringing on bouts of nausea, vomiting, diarrhea, headaches, muscle aches, and in some cases, the reversal of hot and cold sensations. Some neurological symptoms can persist for days to months to years after exposure. ... [more]  

Little Pines Multimedia has released a new series of instructional apps for Android available at their website Apps4Sailing.com, Google Play and Amazon. ... [more]  

Scientists from the UK, USA and Australia say the new technology provides accurate ice thickness measurements from areas that were previously too difficult to access. The results, published this week in the journal Nature Geoscience (Monday 24 November 2014), step up the pace of research in the polar regions aimed at understanding the dramatic sea ice changes in the context of climate change. ... [more]  

The Antigua and Barbuda Marine Association (ABMA) is very pleased to announce that Falmouth Harbour Marina, Catamaran Marina and Antigua Yacht Club Marina are now providing only ultra-low sulphur fuel to yachts. This is as a result of joint efforts of the marinas and the ABMA in raising the issue of the fuel previously supplied having a sulphur content higher than legal requirements in Europe ... [more]  

The new application from PredictWind for Mac and PC is revolutionary for accessing weather data when offshore. Accessing GRIB files, Weather Routing, GMDSS forecasts and Satellite Imagery is now a simple task with the unique and user friendly interface. ... [more]  

The government will expedite permitting for yachts wanting to enter the country’s ports, from taking weeks to taking one day only, with an online one-stop service protocol under the management of the Foreign Ministry, said Coordinating Maritime Affairs Minister Indroyono Soesilo. ... [more]  

As an investment in a FLIR camera is not inexpensive or even one that can be taken quickly due to having to carefully think through the installation process, we thought long and hard about the perceived benefits of the system. At the end of the day we decided to go ahead with the FLIR camera and also decided, that we would pair the FLIR thermal camera with the new Furuno TZ9. ... [more]  

The 29th Atlantic Rally for Cruisers (ARC) set sail today bound for Saint Lucia following a delayed start due to strong winds locally in the harbour of Las Palmas de Gran Canaria yesterday. For only the third time in the rally's history, the decision was made to delay the start, initially planned for 12:30 on Sunday 23 November by 20 hours. ... [more]  

We set out for the summer cruise from a harbour in northwest Scotland. There were three boats out of the normal four. The fourth was somewhere to the south of us, and had promised to catch up if we waited for a night in the anchorage behind the island at the end of Loch Hourn. ... [more]  

Tips on boating with dogs
Four Tips - How to safely truck your boat over the road
Atlantic Odyssey – Emergency Medi-Vac from Cocojet III
ARC 2014 - ARC start delayed
Antarctic ‘ghost mountains’ preserved by ice sheet
Clear the Decks!
Sail-World Team holds first Continental Conference at METS
British Cycling grows by over 500%, can sailing do the same?
Extinction risk not the answer for reef futures
ARC+ fleet sets sail for Saint Lucia
Sail safer with these 'landfall light' secrets
Sailing the Mediterranean – An infographic
New transducer line from Garmin boasts scanning sonar
Building on borrowed time + Video
Marion to Bermuda Race announces the M2M2B Yacht Rally
34 Atlantic Odyssey yachts cross start line off Arrecife
World ARC fleet explores Zululand
Visit Doyle Sails New Zealand at METS 2014
ARC 2014 Opening Ceremony: Flags and bands, one week to the start
Sailing veteran celebrates his 20th Atlantic Rally for Cruisers
All set for ARC+ arrivals in São Vicente   
Caribbean 1500 - Lest We Forget: Crews who won't make it to Tortola   
Crews visit ARC Forest at Las Palmas de Gran Canaria   
Security Council renews action to fight piracy off Somali Coast   
World Odyssey Race cancelled   
Caribbean 1500 - One fleet, two very different stories   
Eccletic ARC fleet assemble in Las Palmas   
Antigua 2 Falmouth - Notice of Race released for 2015 edition   
Oceans of Hope yacht arrives in New York City in unique global voyage   
Spirit of Tradition   
Tropical storm-like conditions in Malta and Sicily as Medicane hits   
ARC+ Cape Verde fleet slows, more wind expected tomorrow   
Top 20 cruising realities no-one talks about!   
Busy schedule begins for ARC crews in Las Palmas   
Slow progress in the Caribbean 1500 fleet   
Crystal Blues finds good medicine in Penang   
ARC+ Cape Verde sets sail from Las Palmas de Gran Canaria   
Destination: Balmy Brentwood Bay and peaceful Tod Inlet   
Safety and enjoyment order of the day in Marina Lanzarote   
First ARC Bahamas boats make landfall in the Caribbean   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph, contact the photographer directly.
XLXL NEW CRU NH
LocalAds   DE  ES  FR  IT