• Privacy Policy
  • About Us
  • Contact Us
Climate Change Dispatch
  • Home
  • Videos
  • Who We Are
  • Facts Vs. Fearmongering
    • Real science vs Junk Science
      • 1100-plus Peer-Reviewed Studies
      • 97% – Myth of the Climate Change Consensus
      • Michael Crichton: Aliens Cause Global Warming
      • Climate change and its causes
      • Climate Science Primer
      • CO2 is not pollution
      • Deceptive Surface Temperature Records
      • Editorial: Great Global Warming Hoax
      • Rules for Climate Radicals: Part 1
      • Rules for Climate Radicals: Part 2
      • Rules for Climate Radicals: Part 3
      • Why CO2 Is A Minor Player In Global Climate
      • Why Politicized Science Is So Dangerous
    • Facts Not Fear
      • A Simple Question For Climate Alarmists
      • Climate Change – The Facts
      • Climate Change Fears Are Empirically Baseless
      • Global Warming 101
      • Global Warming Q&A
      • Understanding The Medieval Warm Period
      • Ocean Cycles and Climate
      • Overview of Plate Climatology Theory
      • Precautionary Principle
      • Should We Celebrate Carbon Dioxide?
      • The Skeptics Handbook
      • Weather Versus Climate
      • Why I’m a GW skeptic
      • Winning the climate debate with facts
      • Why Aliens Cause Global Warming
    • Greenhouse FAQs
      • CO2, Plants, & Industry
      • How much have temps changed?
      • How much have temps changed?
      • How much have temps changed?
      • Is global warming real?
      • Measuring temperature
      • Swimming in CO2?
      • Scientists urge caution?
      • Today’s warming trend
      • Variations in temperature
    • Gore’s Greatest Goofs
      • Deconstructing the Truth
      • Fact-Checking Al Gore’s Latest Predictions
      • How Gore Created The Global Warming Hoax
    • Inside Real Climate
      • Closer look at the 97% Consensus
      • GW’s Amazing Story
      • IPCC gets failing grade
      • Real Climate Exposed!
      • Truth about Real Climate
      • We’ve Been Conned
      • What is there a 97% consensus about?
    • Behind the IPCC
      • 1,000 Scientists Dissent
      • Climategate: Caught Green-Handed!
      • Climategate Inquiries
      • Climategate Inquiries 2
      • NIPCC Report Now Available
      • Understanding the Climategate Inquiries
  • Submissions
  • Contact Us
No Result
View All Result
  • Home
  • Videos
  • Who We Are
  • Facts Vs. Fearmongering
    • Real science vs Junk Science
      • 1100-plus Peer-Reviewed Studies
      • 97% – Myth of the Climate Change Consensus
      • Michael Crichton: Aliens Cause Global Warming
      • Climate change and its causes
      • Climate Science Primer
      • CO2 is not pollution
      • Deceptive Surface Temperature Records
      • Editorial: Great Global Warming Hoax
      • Rules for Climate Radicals: Part 1
      • Rules for Climate Radicals: Part 2
      • Rules for Climate Radicals: Part 3
      • Why CO2 Is A Minor Player In Global Climate
      • Why Politicized Science Is So Dangerous
    • Facts Not Fear
      • A Simple Question For Climate Alarmists
      • Climate Change – The Facts
      • Climate Change Fears Are Empirically Baseless
      • Global Warming 101
      • Global Warming Q&A
      • Understanding The Medieval Warm Period
      • Ocean Cycles and Climate
      • Overview of Plate Climatology Theory
      • Precautionary Principle
      • Should We Celebrate Carbon Dioxide?
      • The Skeptics Handbook
      • Weather Versus Climate
      • Why I’m a GW skeptic
      • Winning the climate debate with facts
      • Why Aliens Cause Global Warming
    • Greenhouse FAQs
      • CO2, Plants, & Industry
      • How much have temps changed?
      • How much have temps changed?
      • How much have temps changed?
      • Is global warming real?
      • Measuring temperature
      • Swimming in CO2?
      • Scientists urge caution?
      • Today’s warming trend
      • Variations in temperature
    • Gore’s Greatest Goofs
      • Deconstructing the Truth
      • Fact-Checking Al Gore’s Latest Predictions
      • How Gore Created The Global Warming Hoax
    • Inside Real Climate
      • Closer look at the 97% Consensus
      • GW’s Amazing Story
      • IPCC gets failing grade
      • Real Climate Exposed!
      • Truth about Real Climate
      • We’ve Been Conned
      • What is there a 97% consensus about?
    • Behind the IPCC
      • 1,000 Scientists Dissent
      • Climategate: Caught Green-Handed!
      • Climategate Inquiries
      • Climategate Inquiries 2
      • NIPCC Report Now Available
      • Understanding the Climategate Inquiries
  • Submissions
  • Contact Us
No Result
View All Result
Climate Change Dispatch
No Result
View All Result

Two New Studies Blow Alarmists’ Claims Away: Coral Bleaching Events Natural, Happened Before

by Kenneth Richard
August 24, 2018, 8:47 AM
in News and Opinion
Reading Time: 3 mins read
A A
1
Share on FacebookShare on XwitterShare on Linkedin

coral reefCoral reef bleaching events occur after exposure to unusually warm water temperatures or excessive sunlight.

Activists claim that today’s coral bleaching events are not only unprecedented, but reefs will soon disappear.

In contrast, scientists have determined that modern-day bleaching events are not unusual or unprecedented, but only a continuation of a naturally occurring phenomenon.

A few thousand years ago, sea surface temperatures in the South China Sea were at least 2°C warmer than they are today. Mass coral death events routinely occurred due to severe bleaching (Xu et al., 2018).

In more recent centuries, a new study reveals that there were more bleaching events in the 1750s and 1890s — during a period encompassing the Little Ice Age — than there have been in recent decades (Kamenose and Hennige, 2018).

Obviously, corals were able to survive past bleaching events, which are naturally occurring and “by no means a new ecological phenomenon of current global warming” (Xu et al., 2018).


What Activists Write About ‘Unprecedented’ Coral Bleaching


Image Source: Popular Science

Image Source: Mother Jones


What Newly Published Science Says…


Xu et al., 2018

Evidence for the Thermal Bleaching of Porites Corals From 4.0 ka B.P. in the Northern South China Sea

“This study provides evidence that thermal coral bleaching events have occurred in the warmer mid-Holocene (where maximum monthly summer SST was 2 °C higher than at present) in Hainan island.  … We carried out this pilot study to explore the responses of corals to abnormally warm conditions in prehistoric periods. Four massive Porites coral fossils that died 3800 – 4200 years ago were collected from the Wenchang fringing reef, Hainan Island, NSCS. The reconstructed SST just prior to the mortality surfaces and growth discontinuities were higher than the [modern] maximum summer SSTs in the NSCS [Northern South China Sea]. This indicated that the corals’ deaths and interruptions in growth – which were observed to be in summer – were accompanied by an anomalously high SST [sea surface temperature]. Enhanced Δδ18O suggested increased evaporation and high-SSS conditions, attributable to warm sea surface temperatures.”

“A significant negative shift in δ13C just prior to mortality surfaces and growth discontinuities indicated a reduced photosynthetic intensity of symbiotic zooxanthellae. Together, this evidence for increased SST and SSS and decreased photosynthetic intensity strongly suggest that the growth hiatuses and coral deaths observed were the results of severe coral bleaching. This, in turn, indicates that coral bleaching events under high SST conditions have already occurred in the mid-Holocene and are by no means a new ecological phenomenon of current global warming.”


Kamenose and Hennige, 2018

Reconstructing Four Centuries of Temperature-Induced Coral Bleaching on the Great Barrier Reef

“Reconstructed bleaching was evident through the entire available record from 1575 to 2001. To determine any GBR-wide bleaching patterns, corals were pooled from all regions in the GBR spanning 15.13 to 22.23°S. Quantitative assessments of bleaching were conducted between 1620 and 2001 for frequency and 1640–2001 for prevalence. Outside of these periods, while we have documented historic bleaching, it is possible that the number of cores available drove the patterns observed.”

“Reconstructed bleaching frequency demonstrated three trends; (1) frequency increased from 1620 to 1753 ± 31 (years) reaching up to 6 years of each decade showing evidence of bleaching in at least 20% of coral cores. (2) Bleaching frequency decreased to 1820 ± 31 when only 1 year of every decade had evidence of bleaching in at least 20% of coral cores. (3) Bleaching frequency increased again from 1820 ± 31 to 2001. The 1890 and 1750 decades were notable for unusually high bleaching frequencies. In contrast to bleaching frequency, bleaching prevalence only demonstrated two trends; (1) a negative trend from 1640 – 1774 ± 78, with prevalence falling from 41 to 21%. 2) An increase in bleaching prevalence from 21% in 1774 ± 78 to 31 % in 2001.”

Read more at No Tricks Zone

  • Truth
  • Twitter
  • Facebook
  • LinkedIn
  • Gettr
  • Threads
  • gab-logo Gab
  • Mastodon
  • Buffer
  • Telegram
  • Email
  • Copy Link
  • Share Using More Networks…
Share via
  • Facebook
  • Like
  • Twitter
  • Pinterest
  • LinkedIn
  • Digg
  • Tumblr
  • VKontakte
  • Print
  • Email
  • Reddit
  • Buffer
  • Love This
  • Weibo
  • Pocket
  • Xing
  • Odnoklassniki
  • WhatsApp
  • Meneame
  • Blogger
  • Amazon
  • Yahoo Mail
  • Gmail
  • AOL
  • Newsvine
  • HackerNews
  • Evernote
  • MySpace
  • Mail.ru
  • Viadeo
  • Line
  • Flipboard
  • Comments
  • SMS
  • Viber
  • Telegram
  • Subscribe
  • Skype
  • Facebook Messenger
  • Kakao
  • LiveJournal
  • Yammer
  • Edgar
  • Fintel
  • Mix
  • Instapaper
  • Copy Link
  • Truth
  • gab-logo Gab
  • Gettr
  • Baidu
  • Mastodon
  • Threads
  • Bluesky

Join our list

Subscribe to our mailing list and get interesting stuff and updates to your email inbox.

Thank you for subscribing.

Something went wrong.

We respect your privacy and take protecting it seriously

Related Posts

Electric Vehicles (EVs)

House Panel Investigates Biden’s EPA, DOJ For Targeting Businesses Over Climate Change

Jun 03, 2025
Electric Vehicles (EVs)

New Jersey Boots Tesla EV Superchargers Off Turnpike As Dems Target Musk

Jun 03, 2025
Extreme Weather

Germany’s Scorching Summer of 1911 Undermines Today’s Heat Hysteria

Jun 03, 2025

Comments 1

  1. David Lewis says:
    7 years ago

    The climate change agenda would impact the average family so adversely that it needs many “worst ever” and “never happened before” events as justification.

    Hurricanes which have actually declined are nothing compared to those around 1900. The “hottest ever” temperatures are cooler than those in the 1930’s. The stampede of the walruses which was supposed to be a “never happened before” event happened in 1958. And so it is with the bleaching of the corals.

    Do remember that Green Peace phonied up some pictures to made bleaching of coral appear to be worse.

Stay Connected On Social Media

gab-logo

Donate Today

Beating back the alarmist narrative takes time and money. Please donate today to help!

Recent Posts

  • cityscape sunStudy Finds Urbanization Behind Rising Temps, Torching Media’s Overheated Climate Claims
    Jun 3, 2025
    New study finds urban heat island may explain most temperature rise—casting doubt on media’s heat wave panic and the push to phase out fossil fuels. […]
  • armed epa agentsHouse Panel Investigates Biden’s EPA, DOJ For Targeting Businesses Over Climate Change
    Jun 3, 2025
    House panel is probing Biden’s EPA and DOJ for targeting small businesses with consent decrees, lawsuits, and 'sue and settle' crackdowns. […]
  • tesla superchargers stationNew Jersey Boots Tesla EV Superchargers Off Turnpike As Dems Target Musk
    Jun 3, 2025
    New Jersey removes Tesla Superchargers from Turnpike amid political feud over DOGE and Elon Musk's federal waste initiative. […]
  • Escaping The HeatGermany’s Scorching Summer of 1911 Undermines Today’s Heat Hysteria
    Jun 3, 2025
    Germany’s scorching summer of 1911 shows extreme heat and droughts long predate any so-called CO2 fears. […]
  • solar farm panelsGlobal Revolt: Over 1,000 Green Energy Projects Rejected Worldwide
    Jun 3, 2025
    Global communities reject 1,000+ renewable projects due to land conflicts, habitat destruction, and environmental concerns despite net-zero push. […]
  • alaska pipelineAlaskans Praise Trump’s Push To Reverse Biden’s Sweeping Drilling Ban
    Jun 2, 2025
    Trump officials move to reverse Biden’s Alaska drilling ban, siding with Native leaders and opening millions of acres to energy development. […]
  • kudzo vines old houseAugusta Chronicle’s Climate-Invasive Species Claim Refuted By Georgia Data
    Jun 2, 2025
    Georgia data shows climate change isn’t boosting invasive plants over native species, debunking Augusta Chronicle’s false claims. […]
  • Lufthansa Jumbo Jet‘Great Green Scam’: Airlines To Shift Mandated Net-Zero Costs Onto Passengers
    Jun 2, 2025
    Passengers face soaring costs as EU and UK net-zero rules hit airlines, driving up ticket prices, fuel costs, and compliance fees. […]
  • Biden speaks after signing IRAInflation Reduction Act Is A $2 Trillion Lie Crushing America’s Energy and Growth
    Jun 2, 2025
    The Inflation Reduction Act fuels inflation, energy costs, and reliance on China, risking blackouts and hurting American families and businesses. […]
  • Gov Hochul hearts ChinaCCP-Tied Nonprofit Caught Bankrolling New York’s Radical Climate Law
    Jun 2, 2025
    CCP-tied nonprofit backed New York’s $75B climate law targeting energy firms, raising serious concerns over influence, costs, and national security risks. […]

Get Instant Email Notifications

Enter your email address to receive notifications of new posts by email either instantly or daily. Check your Junk folder for any verification emails upon subscribing.

Submit a tip

Please enter your email, so we know you're human.

Books We Like

very convenient warming

exposing great lie

Have a suggestion? Let us know! We swap out books based on your input. We participate in the Amazon Services LLC Associates Program. See here.

  • About
  • Privacy Policy
  • Contact Us

© Portions copyright Climate Change Dispatch

Share via
  • Threads
  • gab-logo Gab
  • Mastodon
  • Buffer
  • Telegram
  • Email
  • Copy Link
  • Share Using More Networks…
No Result
View All Result
  • Home
  • Videos
  • Who We Are
  • Facts Vs. Fearmongering
    • Real science vs Junk Science
      • 1100-plus Peer-Reviewed Studies
      • 97% – Myth of the Climate Change Consensus
      • Michael Crichton: Aliens Cause Global Warming
      • Climate change and its causes
      • Climate Science Primer
      • CO2 is not pollution
      • Deceptive Surface Temperature Records
      • Editorial: Great Global Warming Hoax
      • Rules for Climate Radicals: Part 1
      • Rules for Climate Radicals: Part 2
      • Rules for Climate Radicals: Part 3
      • Why CO2 Is A Minor Player In Global Climate
      • Why Politicized Science Is So Dangerous
    • Facts Not Fear
      • A Simple Question For Climate Alarmists
      • Climate Change – The Facts
      • Climate Change Fears Are Empirically Baseless
      • Global Warming 101
      • Global Warming Q&A
      • Understanding The Medieval Warm Period
      • Ocean Cycles and Climate
      • Overview of Plate Climatology Theory
      • Precautionary Principle
      • Should We Celebrate Carbon Dioxide?
      • The Skeptics Handbook
      • Weather Versus Climate
      • Why I’m a GW skeptic
      • Winning the climate debate with facts
      • Why Aliens Cause Global Warming
    • Greenhouse FAQs
      • CO2, Plants, & Industry
      • How much have temps changed?
      • How much have temps changed?
      • How much have temps changed?
      • Is global warming real?
      • Measuring temperature
      • Swimming in CO2?
      • Scientists urge caution?
      • Today’s warming trend
      • Variations in temperature
    • Gore’s Greatest Goofs
      • Deconstructing the Truth
      • Fact-Checking Al Gore’s Latest Predictions
      • How Gore Created The Global Warming Hoax
    • Inside Real Climate
      • Closer look at the 97% Consensus
      • GW’s Amazing Story
      • IPCC gets failing grade
      • Real Climate Exposed!
      • Truth about Real Climate
      • We’ve Been Conned
      • What is there a 97% consensus about?
    • Behind the IPCC
      • 1,000 Scientists Dissent
      • Climategate: Caught Green-Handed!
      • Climategate Inquiries
      • Climategate Inquiries 2
      • NIPCC Report Now Available
      • Understanding the Climategate Inquiries
  • Submissions
  • Contact Us

© 2025 Climate Change Dispatch