(AGENPARL) – lun 14 agosto 2023 August 14, 2023 
RELEASE 23-090
*NASA Clocks July 2023 as Hottest Month on Record Ever Since 1880*
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This map shows global temperature anomalies for July 2023 according to the
GISTEMP analysis by scientists at NASA’s Goddard Institute for Space
Studies. Temperature anomalies reflect how July 2023 compared to the average
July temperature from 1951-1980.
*/Credits: NASA’s Goddard Institute for Space Studies/*
/*Editor’s Note: This release has been updated to add additional graphics,
captions, and to spell out the words degrees Fahrenheit and Celsius.*/
According to scientists at NASA’s Goddard Institute for Space Studies
(GISS) in New York, July 2023 was hotter than any other month in the global
temperature record.
“Since day one, President Biden has treated the climate crisis as the
existential threat of our time,” said Ali Zaidi, White House National
Climate Advisor.” Against the backdrop of record high temperatures,
wildfires, and floods, NASA’s analysis puts into context the urgency of
President Biden’s unprecedented climate leadership. From securing the
Inflation Reduction Act, the largest climate investment in history, to
invoking the Defense Production Act to supercharge domestic clean energy
manufacturing, to strengthening climate resilience in communities nationwide,
President Biden is delivering on the most ambitious climate agenda in
history.”
Overall, July 2023 was 0.43 degrees Fahrenheit (°F) (0.24 degrees Celsius
(°C)) warmer than any other July in NASA’s record, and it was 2.1/°/F
(1.18 °C) warmer than the average July between 1951 and 1980. The primary
focus of the GISS analysis [1] are long-term temperature changes over many
decades and centuries, and a fixed base period yields anomalies that are
consistent over time. Temperature “normals” are defined by several decades or
more – typically 30 years.
“NASA data confirms what billions around the world literally felt:
temperatures in July 2023 made it the hottest month on record. In every
corner of the country, Americans are right now experiencing firsthand the
effects of the climate crisis, underscoring the urgency of President
Biden’s historic climate agenda,” said NASA Administrator Bill Nelson.
“The science is clear. We must act now to protect our communities and
planet; it’s the only one we have.”
This chart shows global temperature anomalies for every July since the 1880s,
based on NASA’s GISTEMP analysis. Anomalies reflect how much the global
temperature was above or below the 1951-1980 norm for July.
*/Credits: NASA’s Goddard Institute for Space Studies / NASA’s Earth
Observatory/*
Parts of South America, North Africa, North America, and the Antarctic
Peninsula were especially hot, experiencing temperatures increases around 7.2
°F (4 °C) above average. Overall, extreme heat this summer put tens of
millions of people under heat warnings and was linked to hundreds of
heat-related illnesses and deaths. The record-breaking July continues a
long-term trend of human-driven warming driven primarily by greenhouse gas
emissions that has become evident over the past four decades. According to
NASA data, the five hottest Julys since 1880 have all happened in the past
five years.
“Climate change is impacting people and ecosystems around the world, and we
expect many of these impacts to escalate with continued warming,” said
Katherine Calvin, chief scientist and senior climate advisor at NASA
Headquarters in Washington. “Our agency observes climate change, its
impacts, and its drivers, like greenhouse gases, and we are committed
providing this information to help people plan for the future.”
NASA assembles its temperature record from surface air temperature data from
tens of thousands of metrological stations, as well as sea surface
temperature data acquired by ship- and buoy-based instruments. This raw data
is analyzed using methods that account for the varied spacing of temperature
stations around the globe and for urban heating effects that could skew the
calculations.
“This July was not just warmer than any previous July – it was the
warmest month in our record, which goes back to 1880,” said GISS Director
Gavin Schmidt. “The science is clear this isn’t normal. Alarming warming
around the world is driven primarily by human-caused greenhouse gas
emissions. And that rise in average temperatures is fueling dangerous extreme
heat that people are experiencing here at home and worldwide.”
High sea surface temperatures contributed to July’s record warmth. NASA’s
analysis shows especially warm ocean temperatures in the eastern tropical
Pacific, evidence of the El Niño that began developing in May 2023.
Phenomena such as El Niño or La Niña, which warm or cool the tropical
Pacific Ocean, can contribute a small amount of year-to-year variability in
global temperatures. But these contributions are not typically felt when El
Niño starts developing in Northern Hemisphere summer. NASA expects to see
the biggest impacts of El Niño in February, March, and April 2024.
For more information on NASA’s global temperature record, visit:
*https://www.nasa.gov/feature/2023/climate-media-resources* [2]
-end-
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Headquarters, Washington
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[1] https://data.giss.nasa.gov/gistemp/
[2] https://www.nasa.gov/feature/2023/climate-media-resources