Triona McGrath: How pollution is changing the ocean's chemistry
Triona McGrath: Hoe vervuiling de chemie van de oceanen verandert
Triona McGrath researches how the oceans are changing due to human activities. Full bio
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the oceans are in our daily lives?
de oceanen zijn in ons dagelijkse leven?
and medicine and food
en medicijnen en eten,
to feed the entire world population.
om de hele wereldbevolking mee te voeden.
that the oceans were so vast
dat de oceanen zo groot waren
by human activities.
ze niet zouden treffen.
about a serious reality
over een ernstige realiteit
called ocean acidification,
bekend als oceaanverzuring
van klimaatverandering.
25 percent of all of the carbon dioxide
hebben geabsorbeerd
in de atmosfeer hebben uitgestoten?
provided by the oceans
die de oceanen hebben geleverd,
is one of the greenhouse gases
een van de broeikasgassen is
more and more and more
met meer en meer en meer
our ocean chemistry.
of chemical reactions.
the details of the chemistry for today.
om in detail te treden over de chemie,
hoe meer kooldioxide in de oceaan dringt,
carbon dioxide enters the ocean,
is an increase in ocean acidity.
dat oceaanzuur toeneemt.
is called ocean acidification.
alongside climate change.
met klimaatverandering.
ocean acidification for over two decades.
gedurende meer dan 2 decennia gevolgd.
time series in Hawaii,
tijdreeks in Hawaii.
concentrations of carbon dioxide,
concentraties van kooldioxide,
of human activities.
van menselijke activiteiten.
concentrations of carbon dioxide
concentraties van kooldioxide
in the surface of the ocean
van de oceaan,
at the same rate
aan dezelfde snelheid toenemen
since measurements began.
sinds de metingen begonnen zijn.
then shows the change in chemistry.
de verandering in chemie.
has entered the ocean,
de oceaan is binnengekomen,
an increase in ocean acidity.
dat oceaanzuur is toegenomen.
monitoring ocean acidification --
oceaanverzuring ook aan het volgen,
Institute and NUI Galway.
en NUI Galway,
acidification at the same rate
aan hetzelfde tempo optreden
sites around the world.
tijdreekssites over de hele wereld.
of just how we collect our data
van hoe we onze data verzamelen
in the middle of winter.
in het midden van de winter.
in the North Atlantic
in de Noord-Atlantische Oceaan
stormy conditions --
stormachtige omstandigheden,
who get a little motion sickness,
een beetje zeeziek worden,
some very valuable data.
over the side of the ship,
langs de kant van de boot,
that are mounted on the bottom
the surrounding water,
over het omringende water,
or dissolved oxygen.
samples in these large bottles.
onze zeewatermonsters in grote flessen.
which can be over four kilometers deep
die meer dan 4 km diep kan zijn
right up to the surface.
monsters tot aan het oppervlak.
analyze them on the ship
analyseren op de boot
for the different chemicals parameters.
voor de chemische parameters.
going to affect all of us?
ieder van ons raken?
in ocean acidity of 26 percent
van 26 procent in oceaanzuur voltrokken
which is directly due to human activities.
puur door menselijke activiteiten.
our carbon dioxide emissions,
kunnen verminderen,
in ocean acidity of 170 percent
in oceaanzuur van 170 procent
our children's lifetime.
is 10 times faster
for over 55 million years.
in de afgelopen 55 miljoen jaar.
ever experienced
how they're going to cope.
hoe het hiermee zal omgaan.
event millions of years ago,
een natuurlijk verzuringsfenomeen
than what we're seeing today.
dan hetgeen we vandaag zien
of many marine species.
van vele mariene soorten samenviel.
some species are actually doing quite well
het eigenlijk vrij goed maken,
as ocean acidity increases,
dat als oceaanzuur toeneemt,
ions in seawater decrease.
in zeewater afneemt.
the building blocks
to make their shells,
om hun schelpen te maken,
ions in seawater
aan deze carbonaationen in zeewater
in order to build coral reefs.
om zo koraalriffen te bouwen.
of carbonate ions decrease,
to make their shells.
moeilijker om hun schelpen te maken
they can actually begin to dissolve.
beginnen ze zelfs op te lossen.
it's called a sea butterfly.
ook wel zeevlinder genoemd.
in the ocean for many species,
in de oceaan voor vele soorten,
was placed into seawater
werd geplaatst in zeewater
by the end of this century.
tegen het einde van deze eeuw.
at this very realistic pH,
bij deze zeer realistische pH
has almost completely dissolved.
bijna volledig is opgelost.
right up through the food chain --
de hele voedselketen treffen,
likes shellfish? Or salmon?
in the ocean could be affected?
beïnvloed zou kunnen worden?
cold-water corals in Irish waters,
zelfs koudwaterkoralen hebben,
including some very important fisheries.
waaronder enkele belangrijke visserijen.
by the end of this century,
dat tegen het einde van deze eeuw
in the entire ocean
koudwaterkoralen in de hele oceaan
that is dissolving their coral structure.
dat hun koraalstructuur oplost.
are these healthy tropical corals.
zijn deze gezonde tropische koralen.
we're expecting by the year 2100.
dat we verwachten tegen het jaar 2100.
has almost completely dissolved.
bijna volledig opgelost.
in the entire ocean.
acidification is a global threat.
een globale bedreiging vormt.
met dit proces te vertragen,
will look like when he's a grown man.
van onze oceanen wanneer hij volwassen is.
carbon dioxide into the atmosphere.
in de atmosfeer uitgestoten.
carbon dioxide emissions.
van kooldioxide te verminderen.
for industry, for governments.
voor de industrie, voor regeringen.
slow down global warming
de opwarming van de aarde vertragen,
and a healthy planet
en een gezonde planeet te behouden
and for generations to come.
en de generaties na ons.
ABOUT THE SPEAKER
Triona McGrath - Chemical oceanographerTriona McGrath researches how the oceans are changing due to human activities.
Why you should listen
Dr. Triona McGrath researches how the oceans are changing due to human activities, particularly in relation to ocean acidification. Specifically, McGrath monitors levels of carbon dioxide in Irish marine waters to determine the accumulation and movement of carbon in the ocean and subsequent increase in ocean acidity. McGrath and her colleagues published the first rates of ocean acidification for Irish offshore waters and the first baseline dataset of carbon parameters in Irish coastal waters. This is crucial in our understanding of the future health of our oceans along with providing information to determine the impacts of ocean acidification on marine ecosystems.
McGrath is a post-doctorate researcher at the National University of Ireland, Galway, funded by the Marine Institute, Ireland. She has been researching ocean climate change since 2008; her latest research project started in February 2017, and for the next four years she will work with colleagues to further develop ocean acidification research in Ireland through the continuation of an ongoing time series in the Rockall Trough and the determination of seasonal and interannual variability of the carbon system in coastal waters. McGrath is a Fulbright Scholar, receiving a Fulbright Postdoctoral Scholarship in 2013 to visit Prof. Andrew Dickson’s laboratory at Scripps Institution of Oceanography, San Diego to further develop analytical skills in ocean carbon chemistry.
McGrath has a Ph.D. in Chemical Oceanography and Bachelor of Marine Science from the National University of Ireland, Galway.
Triona McGrath | Speaker | TED.com