Revealing the oceanic climate code is €≤§particularly important now€€
World Meteorological Day, experts c±"↓all for——
Revealing the oceanic climate code is p∑→β≠articularly important now
From a bird's-eye view o₹↕©©f the vast universe, the Earth ≈¶has a deep blue color, whicΩπ×φh is the color of the ocean that accoun↓∑♣ ts for more than 70% of "♥★its surface area.
The ocean is a source of wind and raiσΩn, a huge "regulator"∞'↓ ;, and is crucial for s₽tabilizing the climate. §λHowever, according to a recent clim♣∏↓ate statement issued > ≥₹by the World Meteorological Orga®↓π→nization, 2020 is one of the three wa"¥"rmest years on meteorological records€β≠.
March 23rd is World Meteorological Day★★≈ . "This year's the$↓me is' Oceans, Our Climate, and≠≥<↕ Weather ', whic"→←h aims to call attention to the r∑©×elationship between weather, clima ☆te change, and the oceans."≠$∞; Zhou Bing, the chief expert☆∑ on climate services at thδ™e National Climate Center, said in an✔'$ interview with a reporte↔♠ r from Science and Technology Dσ"÷aily.
Oceans are closely rβ elated to climate
"The ocean is closely related to o÷ ur weather and climate ch™£ange. There is an ex¶π♣change of heat, momentum, and mγ™atter between the ocean and the atmosph§♥∞ere. The interaction §★ ×between the ocean and the atm ≈∑osphere can cause ever-changing weat$₽Ω&her and climate phenom★ena or extreme events, such as El Ni≥Ω≠no events, La Nina events☆©, and typhoons, leadi€×ng to global or region'₹☆al climate anomalies and meteorol≥™↔ ogical disasters,"✔€♠; Zhou Bing said.
Zhou Bing said that the ocean plays ↑ ≥←a very important role¶÷∏¶ in atmospheric movement and≈±¶ climate change. The movement of ocean→ ↑₽ currents within the ocean δβεand the thermal difference b↓¶≥ etween land and sea have shaped d★♥÷€iverse natural landscap₽♠♥es and complex and diver↑α₽se weather and climate phenom¥ ena on the planet. For ex≈εample, the North Atlantic ♥δεWarm Current has brought beautiful eco★$logical environments to some norther♠€n European countries, whi™♦le the East Asian monsoon cl≤∏'≈imate and the South Asian monsoon φclimate have brought fa₩≥vorable weather conditions t¶♥o agricultural productio↓&♣¥n in Asian countries.
According to Su Jingzhi, a research×≠§er at the Chinese Ac'ademy of Meteorological Sciences, th β≠e ocean plays a veryγ¶α important regulatory role'Ωβ in the global weather π£and climate system. It canλ• regulate the weather andπ>π climate conditions of the Earth, suc™α↓♣h as temperature and humiditββ•y. Due to the relatively large ther'¥∏mal inertia of the ocean, the c♦α≤βapacity of seawater of the same volume♣'≥ to store heat is more than 2000 times λ↔αthat of the atmosphere. If ₹$£ there were no oceans, the temperatu←'↑¶re difference between ≥®☆ day and night, winter, and summer"© on Earth would be large, and the fluctuations in temperatu★γ'♠re would also be very severe,±λ↕ making it possible ₩♦for humans to not adapt t±'o living.
According to data, the oc≥±"₩ean contributes 90% of↑≤ the earth's rainfa'≤ll and also absorbs 90% of the earth&Ω&↕↔#39;s excess heat. The ocean cuδ₽✘rrents redistribute "λthe heat to various parts of the world,™×<γ preventing the earth from↕↕σ getting hot or cold all the time.
"The ocean also provides a large ≤amount of water vapor to the atmospher✘©e, which makes the air we br±₹eathe more humid, oth₩ε&¶erwise the earth would not ∑φ→be suitable for huma>ε∑n habitation," Su Jin€✔gzhi said.
The ocean is still warming
"Observed facts indica✘♠✘te that the Earth's cli£γ÷δmate system is currently in€∞÷ a very fragile balance,"♥ Zhou Bing said.
Statistics show that over the past 100≠© years, nearly 50% of ©'®coastal wetlands have been los>&t due to the combined eff ≠ects of sea level rise, clima≠≥§te warming, and extreme wα±eather events. Since↔&★≤ the 1980s, the ocean has absorφ₽↔bed 20% to 30% of the carbon dioxid×e emitted by humans, leading to c 'ontinued acidification of ¥the ocean. Due to the increasing rat↕←₹e of ice loss in the Greenland♦₹ and Antarctic ice sheets, sustai ₩©ned loss of glacier mass, and oc≠≥×αean thermal expansion, sea leve ¶ Ωl rise has accelerated in recent de ₽cades.
"Especially in 2020, although₹ ₽ the global carbon emissions decreas©€ ↕ed slightly due to the glob☆"al COVID-19 epidemic, theπλ data shows that the global greenhouγ™se gas emissions will increase≤β™ in 2020, the global ocean will con∑λ↕<tinue to warm up, and the ocean heat w♠≥ill reach a new high." ÷✔Zhou Bing is very sad abo ¶←ut this.
What worries him even more is→€★✔ that in the future, abnormal se§€a level rises in more regions w←®☆ill be more frequent, and in§₹creasingly frequent high₽£ water levels will have a Ωσ↑serious impact on many re★ gions. As the ocean warms and sea£ ✔π ice decreases, the global >→♠✔biomass, production, and fishi♣✔←ng potential of marine£¶>∑ animal communities will d ↕ecrease, and species composition wi≤"ll also change; The risk of₩±© adverse impacts such∑Ω≥ as inundation, coastal flo€÷ φoding, and coastal erosion in coastal<¶₽∞ and low-lying areas< will increase.
Speaking of these, Su ∑≥∞Jingzhi very much agrees. He sa®☆id that the ocean has been continuousπφ ≤ly warming in recent decades, anσ&≥♦d extends from the ocean surface to ≠★♣over 2000 meters belowπσ> the sea floor. In recent years×♣, the frequency of ocean heat waves ε has increased signifi<§ $cantly, with seawater te₩♣mperatures even rising by ar↕↔ound 4 ℃ and lasting for "↓←more than a few month®>δ s. "The sea water t↔Ω↑emperature originally ha★☆d a small range of change, with a sig∏nificant fluctuation of one or two♣φ degrees. Such a high tempe✘☆rature rise has a signi↕ε≥ficant impact on the su£πrvival of marine ecology, fish, and alg♦'×ae." Su Jingzhi said.
"It is particularly importantπλ to point out that the ocea¥σ®λns now store a large &ε↔amount of excess heat, with a dept$∑αh of over 2000 meters. After decades or©' hundreds of years, th™★δese heat will eventually $ turn up again to the sea surface. ≈¶Considering that the temperature of ∑♥÷the Earth's surfac≥$↕e had already increased significa✔'γ<ntly at that time, the heat from t ☆he oceans turning up will l∑∞βead to a secondary rise in glo©≠φbal temperature and bri♣±©→ng more serious impacts on the glob♣∏al climate, and this delayed ef←γfect of ocean heat should be≈β given more attention." "A ☆↑ttention." Su Jingzhi emphasize×✘d.
Experts call for more precis& e ocean observation and ←§®in-depth demonstration of the ocean♣ 9;s climate "code&qu€☆ot; to become more important than ev≠<er in today's increasingly sever♣←e impact of climate chan¶ ge. At the same time, the public<∏★∏ should be aware of the impπ™®ortant role of the oceanδ∑♦↓s in the Earth's☆≥> climate system, reduce greenhou< ♥ se gas emissions, and pu>♣'rsue a green and low-carb♠↔£on development path.₽®βσ
