About: http://data.cimple.eu/news-article/393a075c70f20f598cab62b13cc69f3221faad2004686abdedbafa99     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : schema:NewsArticle, within Data Space : data.cimple.eu associated with source document(s)

AttributesValues
rdf:type
schema:articleBody
  • The number of extreme hot days and nights in the Northern Hemisphere could quadruple by the end of the century even if humanity brings down emissions to meet the Paris climate deal goals, scientists said Tuesday. So-called compound hot extremes, 24-hour periods where daytime and nighttime temperatures stay exceptionally high, pose a significant risk to human health as the body doesn't get a chance to cool off after the Sun sets. Researchers in China analysed temperature data from the Northern Hemisphere -- home to 90 percent of humanity -- stretching back to 1960. They found a clear upward trend in the frequency and intensity of compound hot days and nights, defined as days in which the temperature high and low were both in the top 10 percent of those registered between 1960-2012. They then used region-specific temperature data to model the potential number -- and ferocity -- of heat extremes going forward. Even if greenhouse gas emissions are brought in line with the goals of the landmark Paris accord, which aims to cap global warming below two Degrees Celsius (3.6 Farenheit), the team found that such exceptionally warm 24-hour periods were likely to quadruple by 2100. This equates to a rise of human exposure to compound hot extremes from 19.5 billion person-days last decade to around 74 billion days in the 2090s, the researchers said. "This shows us this overlooked type of hot extreme is increasing significantly in frequency and intensity," said study authors Yang Chen from the Chinese Academy of Meteorological Sciences and Jun Wang from the Institute of Atmospheric Physics. "These increasing trends are likely to continue and even accelerate in the future." The team also confirmed a "clear connection" between manmade emissions and the increase in compound hot extremes, they told AFP. The team plans further research on whether or not urban populations may be especially vulnerable to the risks posed by extreme hot daytime and nightime temperatures. But they acknowledged the potential impact of the Urban Heat Island (UHI) effect, which occurs when cooling parks, dams and lakes are replaced by heat-conducting concrete and asphalt -- making cities warmer than their surroundings. By mid-century alone the United Nations predicts that two-thirds of humans will live in cities. "These compound hot extremes are particularly health-damaging because they leave little chance for humans to recover throughout the event," said the authors of the study, published in Nature Communications. They called on health authorities to increase vigilance measures to cover nightime as well as day during periods of extreme heat. pg/mh/jj
schema:headline
  • N. Hemisphere faces 4-fold rise in extreme heat periods: study
schema:mentions
schema:author
schema:datePublished
http://data.cimple...sPoliticalLeaning
http://data.cimple...logy#hasSentiment
http://data.cimple...readability_score
Faceted Search & Find service v1.16.115 as of Oct 09 2023


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 07.20.3238 as of Jul 16 2024, on Linux (x86_64-pc-linux-musl), Single-Server Edition (126 GB total memory, 11 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2025 OpenLink Software