Jump to content

Aumentan las temperaturas: La NASA confirma que el 2024 fue el año más cálido registrado


Recommended Posts

  • Publishers
Posted
2024gistempmap.png?w=2048
Este mapa de la Tierra en 2024 muestra las anomalías de la temperatura global de la superficie, es decir, cuánto más caliente o más fría estuvo cada región del planeta en comparación con el promedio de 1951 a 1980. Las temperaturas normales se muestran en blanco, las superiores a las normales en rojo y naranja, y las inferiores a las normales en azul. Una versión animada de este mapa muestra la evolución de las anomalías de la temperatura global a lo largo del tiempo, desde 1880. Descarga esta visualización del Estudio de Visualización Científica del Centro Goddard de la NASA: https://svs.gsfc.nasa.gov/5450.
Crédito: Estudio de Visualización Científica de la NASA

Read this release in English here.

En el año 2024, la temperatura promedio de la superficie de la Tierra fue la más cálida que se haya registrado, según un análisis liderado por científicos de la NASA.

“Una vez más, se ha batido el récord de temperatura: 2024 fue el año más cálido desde que se empezaron a llevar registros en 1880”, dijo el administrador de la NASA, Bill Nelson. “Entre las temperaturas récord y los incendios forestales que amenazan actualmente nuestros centros y personal en California, nunca ha sido más importante entender nuestro planeta cambiante”.

Las temperaturas globales del 2024 estuvieron 2,30 grados Fahrenheit (1,28 grados Celsius) por encima del promedio para el período de referencia de la NASA (de 1951 a 1980), superando el récord establecido en 2023. El nuevo máximo histórico llega después de 15 meses consecutivos (junio de 2023 a agosto de 2024) de récords de temperaturas mensuales, una racha de calor sin precedentes.

Científicos de la NASA también estiman que en el 2024 la Tierra estuvo alrededor de 2,65 grados Fahrenheit (1,47 grados Celsius) más cálida que el promedio de mediados del siglo XIX (1850-1900). Durante más de la mitad del 2024, las temperaturas promedio superaron en 1,5 grados Celsius el nivel de referencia, y el promedio anual, con incertidumbres matemáticas, podría haber superado el nivel por primera vez.

“El Acuerdo de París sobre el cambio climático establece esfuerzos para mantenerse por debajo del nivel de 1,5 grados a largo plazo. Para poner eso en perspectiva, las temperaturas durante los períodos cálidos en la Tierra hace tres millones de años —cuando el nivel del mar era decenas de metros más alto que hoy— eran solo unos 3 grados Celsius más cálidos que los niveles preindustriales”, dijo Gavin Schmidt, director del Instituto Goddard de Investigaciones Espaciales (GISS, por sus siglas en inglés) de la NASA en Nueva York. “Estamos a medio camino de alcanzar niveles de calor del Plioceno en apenas 150 años”.

Los científicos han concluido que la tendencia al calentamiento de las últimas décadas está siendo impulsada por el dióxido de carbono, el metano y otros gases de efecto invernadero que atrapan el calor. Según un análisis internacional reciente, en 2022 y 2023 la Tierra registró un aumento récord de las emisiones de dióxido de carbono procedentes de combustibles fósiles. La concentración de dióxido de carbono en la atmósfera ha aumentado desde los niveles preindustriales en el siglo XVIII de aproximadamente 278 partes por millón a alrededor de 420 partes por millón en la actualidad.

La NASA y otras agencias federales recopilan regularmente datos sobre las concentraciones y emisiones de gases de efecto invernadero. Estos datos están disponibles en el Centro de Gases de Efecto Invernadero de Estados Unidos, una iniciativa de múltiples instituciones que consolida la información procedente de observaciones y modelos, con el fin de ofrecer a los responsables de la toma de decisiones un único punto de acceso a datos y análisis.

Tendencias de calor excepcional

Las temperaturas de cada año pueden verse influidas por fluctuaciones climáticas naturales como El Niño y La Niña, que alternativamente calientan y enfrían el océano Pacífico tropical. El fuerte fenómeno de El Niño que comenzó en el otoño boreal de 2023 contribuyó a que las temperaturas mundiales superaran los récords anteriores.

La ola de calor que comenzó en 2023 siguió superando las expectativas en 2024, según Schmidt, a pesar de que El Niño remitió. Los investigadores están trabajando en la identificación de los factores que contribuyen a este fenómeno, incluidos los posibles efectos climáticos de la erupción volcánica de Tonga de enero de 2022 y de las reducciones de la contaminación, que pueden cambiar la cubierta de nubes y la forma en que la energía solar se refleja hacia el espacio.

“No en todos los años se van a batir récords, pero la tendencia a largo plazo es clara”, dijo Schmidt. “Ya estamos viendo el impacto en las precipitaciones extremas, las olas de calor y el aumento del riesgo de inundaciones, que van a seguir empeorando mientras continúen las emisiones”.

Cambios a nivel local

La NASA elabora su registro de temperaturas a partir de los datos de temperatura del aire en superficie recolectados por decenas de miles de estaciones meteorológicas, así como de los datos de temperatura de la superficie del mar adquiridos por instrumentos en barcos y boyas. Para el análisis de estos datos, se emplean métodos que toman en consideración el espaciamiento variado de las estaciones de temperatura a nivel global y los efectos del calentamiento urbano que podrían sesgar los cálculos.

Una nueva evaluación publicada a principios de este año por científicos de la Escuela de Minas de Colorado, la Fundación Nacional para las Ciencias, la Administración Nacional Oceánica y Atmosférica (NOAA, por sus siglas en inglés) y la NASA provee aún más confianza en los datos de temperatura global y regional de la agencia.

“Cuando se producen cambios en el clima, primero se ven en la media mundial, luego se ven a nivel continental y después a nivel regional. Ahora lo estamos viendo a nivel local”, dijo Schmidt. “Los cambios que se están produciendo en las experiencias meteorológicas cotidianas de la gente se han hecho muy evidentes”.

Los análisis independientes de la NOAA, Berkeley Earth, el Centro Hadley (parte de la Oficina Meteorológica del Reino Unido, Met Office) y el Servicio de Cambio Climático de Copernicus en Europa también han concluido que las temperaturas de la superficie global para 2024 fueron las más altas desde que comenzaron los registros modernos. Estos científicos utilizan gran parte de los mismos datos de temperatura en sus análisis, pero emplean metodologías y modelos diferentes. Todos muestran la misma tendencia al calentamiento.

El conjunto completo de datos de la NASA sobre las temperaturas de la superficie global, así como los detalles (en inglés) de cómo los científicos de la NASA llevaron a cabo el análisis, están a disposición del público en GISS, un laboratorio de la NASA gestionado por el Centro de Vuelo Espacial Goddard de la agencia en Greenbelt, Maryland.

Para más información (en inglés) sobre los programas de ciencias de la Tierra de la NASA, visita:

https://www.nasa.gov/earth

-fin-

María José Viñas / Liz Vlock
Sede, Washington
240-458-0248 / 202-358-1600
maria-jose.vinasgarcia@nasa.gov / elizabeth.a.vlock@nasa.gov

Peter Jacobs
Centro de Vuelo Espacial Goddard, Greenbelt, MD.
301-286-0535
peter.jacobs@nasa.gov

View the full article

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By Amazing Space
      Live Video from the International Space Station (Seen From The NASA ISS Live Stream)
    • By Amazing Space
      Live Video from the International Space Station (Seen From The NASA ISS Live Stream)
    • By NASA
      Credit: NASA NASA has selected Troy Sierra JV, LLC of Huntsville, Alabama, to provide engineering, research, and scientific support at the agency’s Glenn Research Center in Cleveland.  
      The Test Facility Operations, Maintenance, and Engineering Services III contract is a cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract with a maximum potential value of approximately $388.3 million. The performance period begins Jan. 1, 2026, with a three-year base period followed by a two-year option, and a potential six-month extension through June 2031.
      This contract will provide and manage the engineering, technical, manufacturing, development, operations, maintenance, inspection, and certification support services needed to conduct aerospace testing in NASA Glenn’s facilities and laboratories.
      For information about NASA and other agency programs, visit:
      https://www.nasa.gov
      -end-
      Tiernan Doyle
      Headquarters, Washington
      202-358-1600
      tiernan.doyle@nasa.gov
      Jan Wittry
      Glenn Research Center, Cleveland
      216-433-5466
      jan.m.wittry-1@nasa.gov
      Share
      Details
      Last Updated Sep 12, 2025 LocationNASA Headquarters Related Terms
      Glenn Research Center View the full article
    • By NASA
      3 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      Researchers in the Verification and Validation Lab at NASA’s Ames Research Center in California’s Silicon Valley monitor a simulated drone’s flight path during a test of the FUSE demonstration.NASA/Brandon Torres Navarrete Through an ongoing collaboration, NASA and the Department of War are working to advance the future of modern drones to support long distance cargo transportation that could increase efficiency, reduce human workload, and enhance safety.  
      Researchers from NASA’s Ames Research Center in California’s Silicon Valley recently participated in a live flight demonstration showcasing how drones can successfully fly without their operators being able to see them, a concept known as beyond visual line of sight (BVLOS).  
      Cargo drones, a type of Unmanned Aerial Systems (UAS), carried various payloads more than 75 miles across North Dakota, between Grand Forks Air Force Base and Cavalier Space Force Station. This demonstration was conducted as part of the War Department’s UAS Logistics, Traffic, Research, and Autonomy (ULTRA) effort. 
      NASA’s UAS Service Supplier (USS) technology helped to demonstrate that cargo drones could operate safely even in complex, shared airspace. During the tests, flight data including location, altitude, and other critical data were transmitted live to the NASA system, ensuring full situational awareness throughout the demonstration. 
      Terrence Lewis and Sheryl Jurcak, members of the FUSE project team at NASA Ames, discuss the monitoring efforts of the FUSE demonstration at the Airspace Operations Lab. NASA/Brandon Torres Navarrete The collaboration between NASA and the Department of War is known as the Federal USS Synthesis Effort (FUSE). The demonstration allowed FUSE researchers to test real-time tracking, situational awareness, and other factors important to safely integrating of drone traffic management into U.S. national airspace. The FUSE work marks an important step towards routine, scalable autonomous cargo drone operations and broader use for future military logistics. 
      “NASA and the Department of War have a long and storied partnership, collaborating with one another to contribute to continued advancement of shared American ideals,” said Todd Ericson, senior advisor to the NASA administrator. “FUSE builds upon our interagency cooperation to contribute enhanced capabilities for drones flying beyond the visual line of sight. This mission is the next big step toward true autonomous flight and will yield valuable insights that we can leverage as both the commercial drone, cargo and urban air taxi industries continue to expand and innovate. As always, safety is of paramount importance at NASA, and we are working with our partners at the FAA and Department of Transportation to ensure we regulate this appropriately.” 
      Autonomous and semi-autonomous drones could potentially support a broad range of tasks for commercial, military, and private users. They could transport critical medical supplies to remote locations, monitor wildfires from above, allow customers to receive deliveries directly in their backyards. NASA is researching technology to further develop the infrastructure needed for these operations to take place safely and effectively, without disrupting the existing U.S. airspace. 
      “This system is crucial for enabling safe, routine BVLOS operations,” said Terrence Lewis, FUSE project manager at NASA Ames. “It ensures all stakeholders can see and respond to drone activity, which provides the operator with greater situational awareness.” 
      NASA Ames is collaborating on the FUSE project with the War Department’s Office of the Undersecretary of War for Acquisition and Sustainment. The NASA FUSE effort is also collaborating with ULTRA, a multi-entity partnership including the Office of the Secretary of War, the County of Grand Forks, the Northern Plains UAS Test Site, the Grand Sky Development, the Air Force Research Laboratory, and several other commercial partners, aiming to bolster capabilities within the National Airspace System. 
      Share
      Details
      Last Updated Sep 12, 2025 Related Terms
      Ames Research Center Aeronautics Aeronautics Research General Explore More
      5 min read NASA’s X-59 Moves Toward First Flight at Speed of Safety
      Article 5 minutes ago 1 min read Drag Prediction Workshop Series
      Article 8 hours ago 2 min read NASA Ames Science Directorate: Stars of the Month – September 2025
      Article 23 hours ago Keep Exploring Discover More Topics From NASA
      Missions
      Humans in Space
      Climate Change
      Solar System
      View the full article
    • By NASA
      This animation depicts water disappearing over time in the Martian river valley Neretva Vallis, where NASA’s Perseverance Mars takes the rock sample named “Sapphire Canyon” from a rock called “Cheyava Falls,” which was found in the “Bright Angel” formation. Credit: NASA Lee este comunicado de prensa en español aquí.
      A sample collected by NASA’s Perseverance Mars rover from an ancient dry riverbed in Jezero Crater could preserve evidence of ancient microbial life. Taken from a rock named “Cheyava Falls” last year, the sample, called “Sapphire Canyon,” contains potential biosignatures, according to a paper published Wednesday in the journal Nature.
      A potential biosignature is a substance or structure that might have a biological origin but requires more data or further study before a conclusion can be reached about the absence or presence of life.  
      “This finding by Perseverance, launched under President Trump in his first term, is the closest we have ever come to discovering life on Mars. The identification of a potential biosignature on the Red Planet is a groundbreaking discovery, and one that will advance our understanding of Mars,” said acting NASA Administrator Sean Duffy. “NASA’s commitment to conducting Gold Standard Science will continue as we pursue our goal of putting American boots on Mars’ rocky soil.”
      NASA’s Perseverance rover discovered leopard spots on a reddish rock nicknamed “Cheyava Falls” in Mars’ Jezero Crater in July 2024. Scientists think the spots may indicate that, billions of years ago, the chemical reactions in this rock could have supported microbial life; other explanations are being considered.Credit: NASA/JPL-Caltech/MSSS NASA’s Perseverance Mars rover took this selfie, made up of 62 individual images, on July 23, 2024. A rock nicknamed “Cheyava Falls,” which has features that may bear on the question of whether the Red Planet was long ago home to microscopic life, is to the left of the rover near the center of the image.Credit: NASA/JPL-Caltech/MSSS Perseverance came upon Cheyava Falls in July 2024 while exploring the “Bright Angel” formation, a set of rocky outcrops on the northern and southern edges of Neretva Vallis, an ancient river valley measuring a quarter-mile (400 meters) wide that was carved by water rushing into Jezero Crater long ago.
      “This finding is the direct result of NASA’s effort to strategically plan, develop, and execute a mission able to deliver exactly this type of science — the identification of a potential biosignature on Mars,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “With the publication of this peer-reviewed result, NASA makes this data available to the wider science community for further study to confirm or refute its biological potential.”
      The rover’s science instruments found that the formation’s sedimentary rocks are composed of clay and silt, which, on Earth, are excellent preservers of past microbial life. They also are rich in organic carbon, sulfur, oxidized iron (rust), and phosphorous.
      “The combination of chemical compounds we found in the Bright Angel formation could have been a rich source of energy for microbial metabolisms,” said Perseverance scientist Joel Hurowitz of Stony Brook University, New York and lead author of the paper. “But just because we saw all these compelling chemical signatures in the data didn’t mean we had a potential biosignature. We needed to analyze what that data could mean.”
      First to collect data on this rock were Perseverance’s PIXL (Planetary Instrument for X-ray Lithochemistry) and SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals) instruments. While investigating Cheyava Falls, an arrowhead-shaped rock measuring 3.2 feet by 2 feet (1 meter by 0.6 meters), they found what appeared to be colorful spots. The spots on the rock could have been left behind by microbial life if it had used the raw ingredients, the organic carbon, sulfur, and phosphorus, in the rock as an energy source.
      In higher-resolution images, the instruments found a distinct pattern of minerals arranged into reaction fronts (points of contact where chemical and physical reactions occur) the team called leopard spots. The spots carried the signature of two iron-rich minerals: vivianite (hydrated iron phosphate) and greigite (iron sulfide). Vivianite is frequently found on Earth in sediments, peat bogs, and around decaying organic matter. Similarly, certain forms of microbial life on Earth can produce greigite.
      The combination of these minerals, which appear to have formed by electron-transfer reactions between the sediment and organic matter, is a potential fingerprint for microbial life, which would use these reactions to produce energy for growth. The minerals also can be generated abiotically, or without the presence of life. Hence, there are ways to produce them without biological reactions, including sustained high temperatures, acidic conditions, and binding by organic compounds. However, the rocks at Bright Angel do not show evidence that they experienced high temperatures or acidic conditions, and it is unknown whether the organic compounds present would’ve been capable of catalyzing the reaction at low temperatures.  
      The discovery was particularly surprising because it involves some of the youngest sedimentary rocks the mission has investigated. An earlier hypothesis assumed signs of ancient life would be confined to older rock formations. This finding suggests that Mars could have been habitable for a longer period or later in the planet’s history than previously thought, and that older rocks also might hold signs of life that are simply harder to detect.
      “Astrobiological claims, particularly those related to the potential discovery of past extraterrestrial life, require extraordinary evidence,” said Katie Stack Morgan, Perseverance’s project scientist at NASA’s Jet Propulsion Laboratory in Southern California. “Getting such a significant finding as a potential biosignature on Mars into a peer-reviewed publication is a crucial step in the scientific process because it ensures the rigor, validity, and significance of our results. And while abiotic explanations for what we see at Bright Angel are less likely given the paper’s findings, we cannot rule them out.”
      The scientific community uses tools and frameworks like the CoLD scale and Standards of Evidence to assess whether data related to the search for life actually answers the question, Are we alone?  Such tools help improve understanding of how much confidence to place in data suggesting a possible signal of life found outside our own planet.
      Marked by seven benchmarks, the Confidence of Life Detection, or CoLD, scale outlines a progression in confidence that a set of observations stands as evidence of life. Credit: NASA Sapphire Canyon is one of 27 rock cores the rover has collected since landing at Jezero Crater in February 2021. Among the suite of science instruments is a weather station that provides environmental information for future human missions, as well as swatches of spacesuit material so that NASA can study how it fares on Mars.
      Managed for NASA by Caltech, NASA JPL built and manages operations of the Perseverance rover on behalf of the agency’s Science Mission Directorate as part of NASA’s Mars Exploration Program portfolio.
      To learn more about Perseverance visit:
      https://science.nasa.gov/mission/mars-2020-perseverance
      -end-
      Bethany Stevens / Karen Fox
      Headquarters, Washington
      202-358-1600
      bethany.c.stevens@nasa.gov / karen.c.fox@nasa.gov
      DC Agle
      Jet Propulsion Laboratory, Pasadena, Calif.
      818-393-9011
      agle@jpl.nasa.gov
      Share
      Details
      Last Updated Sep 10, 2025 EditorJessica TaveauLocationNASA Headquarters Related Terms
      Perseverance (Rover) Astrobiology Mars Mars 2020 Planetary Science Science Mission Directorate View the full article
  • Check out these Videos

×
×
  • Create New...