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Yesterday, an ash cloud from Mount Etna, a volcano on Italy's island of Sicily, caused air travel disruptions around the region. The eruption was captured in color-enhanced imagery via Europe's #Meteosat9 🛰️, where we can see the ash (pink) drifting southward from the island. https://t.co/lUZtTTOgWb

NOAA Satellites

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The media are invited to attend @NOAA's monthly #climate call on Thu. August 17 at 11 am ET. Experts will review the July 2023 climate analyses and provide outlooks through November. A NOAA expert will also review the status of Florida's #CoralReefs. More: https://t.co/8AYBIoRFz6 https://t.co/BMuVSn8lvb

NOAA Satellites - Public Affairs

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July 2023 confirmed as hottest month on record
Earth just had its hottest July on record. Sea ice was the lowest on record. For the fourth consecutive month, the global ocean surface temperature  hit a record high.

The monthly climate monitoring reports from the European Union’s Copernicus Climate Change Service, the US National Oceanic and Atmospheric Administration and NASA confirm the extraordinary pace of climate change as a result of heat-trapping greenhouse gases in the atmosphere.

WMO uses the datasets in its State of the Global Climate reports and to inform decision-makers around the world. The year to date has been the third warmest on record.

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Globally averaged surface air temperature for all months of July from 1940 to 2023. Shades of blue indicate cooler-than-average years, while shades of red show years that were warmer than average. Data: ERA5. Credit: C3S/ECMWF

Based on the information from the WMO community, United Nations  Secretary-General António Guterres warned that “the era of global warming has ended” and “the era of global boiling has arrived.”

July was estimated to have been around 1.5°C warmer than the pre-industrial average for 1850-1900, according to the Copernicus Climate Change Service, operated by the European Centre for Medium Range Weather Forecasting. It said July was 0.33°C warmer than the previous warmest month, July 2019.

Asia, Africa, and South America each had their warmest July on record. South America had its highest monthly temperature anomaly of any month on record.

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Global average sea surface temperatures continued to rise, after a long period of unusually high temperatures since April 2023, reaching record high levels in July. For the month as a whole, global average sea surface temperatures were 0.51°C above the 1991-2020 average.

The North Atlantic was 1.05°C above average in July. Marine heatwaves developed south of Greenland and in the Labrador Sea, in the Caribbean basin, and across the Mediterranean Sea.

The record ocean heat is being reported at the start of an El Niño event, which is expected to lead to higher temperatures, more marine heatwaves and coral bleaching. It is expected that the biggest El Niño temperature impacts will be felt in 2024.

“We just witnessed global air temperatures and global ocean surface temperatures set new all-time records in July. These records have dire consequences for both people and the planet exposed to ever more frequent and intense extreme events,” Samantha Burgess, Deputy Director of the Copernicus Climate Change Service (C3S), told a media briefing at the United Nations in Geneva.

“News of the warmest month on record perhaps shouldn’t come as a surprise, said Chris Hewitt, WMO Director of Climate Services, told the media briefing. “2015 to 2022 were the eight warmest years on record, and this is on the back of a clear warming decade-on-decade. As we continue to see continued increases in concentrations of greenhouse gases in the atmosphere, this long-term warming will continue and temperature records will continue to be broken.”
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Sea ice

Sea ice coverage hit a record low: July 2023 set a record for the lowest global July sea ice extent (coverage) on record. Globally, sea ice extent in July 2023 was about 1 217 2[...]
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
July 2023 confirmed as hottest month on record Earth just had its hottest July on record. Sea ice was the lowest on record. For the fourth consecutive month, the global ocean surface temperature  hit a record high. The monthly climate monitoring reports from…
94 square kilometers (470 000 square miles) less than the previous record low from July 2019, according to NOAA’s National Centers for Environmental Information.

Antarctic sea ice coverage ranked lowest on record for a third-consecutive month, running about 1 million square miles (2.59 million km2) — roughly the size of Argentina — below the 1991–2020 average. This was 580 000 square miles (1 502 190 km2) below the previous record low from July 2022. The Arctic sea ice extent for July 2023 ranked as the 12th smallest in the satellite record.

Hydrological highlights

July 2023 was wetter than average over most of northern Europe and in a region from the Black Sea and Ukraine to northwestern Russia.

Drier-than-average conditions were experienced across the Mediterranean basin, with Italy and southeastern Europe having the largest anomalies.

Beyond Europe, July 2023 was wetter than average over northeastern North America, Afghanistan, Pakistan, northeastern China, northern and eastern Australia, and Chile.

Extratropical drier-than-average regions included Mexico and the southwestern United States, central and southeastern Asia, southwestern Australia, and parts of southern Brazil and Paraguay.
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EU Copernicus Climate Change report is here

NASA July monthly climate report is here

NOAA July monthly climate report is here
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NASA map of Earth has hottest month on record in July 2023

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Monday, August 14, 2023 - 20:15

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Climate change

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MDebray

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NOAA update predicts above normal hurricane season
NOAA’s Climate Prediction Center — a division of the National Weather Service — has increased its prediction for the ongoing 2023 Atlantic hurricane season from a near-normal level of activity to an above-normal level. Current ocean and atmospheric conditions, such as record-warm Atlantic sea surface temperatures, are likely to counterbalance the usually limiting atmospheric conditions associated with the ongoing El Nino event.

NOAA forecasters have increased the likelihood of an above-normal Atlantic hurricane season to 60% (the outlook issued in May predicted a 30% chance). The likelihood of near-normal activity has decreased to 25% and there is a 15% chance of a below-normal season.
https://www.noaa.gov/sites/default/files/2023-08/IMAGE-Hurricane-Outlook-AUGUST-UPDATE-2023-Pie-081023-NOAA.png
<figcaption
The updated 2023 Atlantic hurricane season probability and number of named storms. (Image credit: NOAA)

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The update covers the entire six-month hurricane season that ends on Nov. 30. It forecasts 14-21 named storms, of which 6-11 could become hurricanes (winds of 119 kmh/74 mph or greater). Of those, 2-5 could become major hurricanes (category 3 and above, with winds of 178 kmh/111 mph or greater). NOAA provides these ranges with a 70% confidence. These updated ranges include storms that have already formed this season.

The Atlantic basin experienced an active start to the hurricane season with five storms that have reached at least tropical storm strength, including one hurricane already. An average hurricane season produces 14 named storms, of which seven become hurricanes, including three major hurricanes.

“The main climate factors expected to influence the 2023 Atlantic hurricane activity are the ongoing El Nino and the warm phase of the Atlantic Multi-Decadal Oscillation, including record-warm Atlantic sea surface temperatures,” said Matthew Rosencrans, lead hurricane season forecaster with NOAA’s Climate Prediction Center. “Considering those factors, the updated outlook calls for more activity, so we urge everyone to prepare now for the continuing season.”

El Nino conditions are currently being observed. El Nino usually results in atmospheric conditions that help to lessen tropical activity during the Atlantic hurricane season. So far, those limiting conditions have been slow to develop and climate scientists are forecasting that the associated impacts that tend to limit tropical cyclone activity may not be in place for much of the remaining hurricane season.

A below-normal wind shear forecast, slightly below-normal Atlantic trade winds and a near- or above-normal West African Monsoon were also key factors in shaping this updated seasonal forecast.

In total, the 2022 Atlantic hurricane season produced 14 named storms, of which eight became hurricanes and two were major hurricanes (Ian and Fiona). Both 2020 and 2021 were so active that the regular list of rotating names was exhausted. WMO oversees the rotating list of names.

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Early Warnings for All

It takes just one landfalling major hurricane to set back years of socio-economic development.

Small Island Developing States suffer disproportionately in terms of both economic impact and the human toll. For instance, Hurricane Maria in 2017 cost Dominica 800% of its Gross Domestic Product.

Between 1970 and 2021 trop[...]
Climate Change Science on Telegram by GRT: World Meteorological Organization / NASA / IPCC / ONU / OOH / UN United Nations etc.
NOAA update predicts above normal hurricane season NOAA’s Climate Prediction Center — a division of the National Weather Service — has increased its prediction for the ongoing 2023 Atlantic hurricane season from a near-normal level of activity to an above…
ical cyclones (the generic term which includes hurricanes) were the leading cause of both reported human and economic losses worldwide, accounting for more than 2 000 disasters.

​However, the death toll more than 350,000 in the 1970s to less than 20,000 in 2010-2019. Reported economic losses in 2010-2019 were at 573.2 billion dollars.

“Tropical cyclones are major killers and a single storm can reverse years of socio-economic development. The death toll has fallen dramatically thanks to improvements in forecasting, warning and disaster risk reduction. But we can do even better,” said WMO Secretary-General Prof. Petteri Taalas.

“The international Early Warnings for All initiative seeks to ensure that everyone has access to warnings of life-threatening winds, storm surge and rainfall in the next five years, especially in Small Island Developing States which are on the frontlines of climate change,” he said.

More information here: https://www.noaa.gov/news-release/noaa-forecasters-increase-atlantic-hurricane-season-prediction-to-above-normal
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A GOES-16 (GOES East) visible satellite image of Hurricane Don at 6:20 PM EDT on July 22, 2023 in the Atlantic. Don was the firs

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News

Publish Date

Friday, August 11, 2023 - 14:45

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Hurricanes

Early Warnings

Tropical cyclones

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Likelihood of greater activity rises due to record-warm sea surface temperatures
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MDebray

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Get ready for the four regional climate weeks, building momentum for the climate conference #COP28 in November. 🗓️ Save the dates:

🇰🇪 Nairobi, 4-8 Sept
🇸🇦 Riyadh, 8-12 Oct
🇵🇦 Panama, 23-27 Oct
🇲🇾 Johor Bahru, 13-17 Nov

UN Climate Change

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Scientists find that more than a fifth of all reptile species are threatened with extinction. A @ConservationOrg, @natureserve & @IUCN led study warns that we must conserve them to prevent dramatic changes to Earth’s critical ecosystems. conservation.org/blog/study-…

Conservation Intl

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RT @NOAANCEI: Happy Back to School! Did you know that NCEI has educational materials and toolkits that are aligned with Next Generation Science Standards? We make it easy to get data into your lesson plans: ncei.noaa.gov/resources/educ… @NOAAeducation

NOAA Satellites

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Just in: $240 million available for habitat restoration & coastal resilience through Investing in America agenda.

Details: noaa.gov/news-release/biden-…

NOAA Communications

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#Biodiversity 101: Why it matters and how to protect it

Learn more via @GlobalLF news.globallandscapesforum.o…

UN Biodiversity

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#IPCC’s #ClimateReport on the physical science basis of #climatechange, released in 2021, shows, for the first time, the connection between human emissions with climate & extreme weather events across the globe.

➡️bit.ly/WGIRpt
➡️youtu.be/e7xW1MfXjLA
🎥@PaolaAArias2

IPCC

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In case you missed this yesterday:
(1 of 5) IT’S OFFICIAL:

Earth just had its hottest July in 174 years.

4th consecutive month of record-high global ocean surface temperature.

Antarctica #SeaIce coverage had a record-low in July for the 3rd consecutive month.

bit.ly/3OTnxkT

@NOAANCEI #StateOfClimate
- NOAA

NOAA

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