Publish: 08:10, 15 Mar, 2025 Updated: 08:11, 15 Mar, 2025

NASA reports unexpected rise in global sea levels in 2024

Online Desk
NASA reports unexpected rise in global sea levels in 2024
Image Courtesy: NASA

A NASA-led analysis has revealed that global sea levels rose faster than anticipated in 2024, driven by an unusual amount of ocean warming. The recorded rate of rise was 0.23 inches (0.59 cm) per year, exceeding the expected 0.17 inches (0.43 cm) per year. This increase was largely attributed to thermal expansion, as warming waters expand, along with contributions from melting ice sheets and glaciers.

“The rise we saw in 2024 was higher than we expected,” said Josh Willis, a sea level researcher at NASA’s Jet Propulsion Laboratory. “Every year is a little different, but what’s clear is that the ocean continues to rise, and the rate of rise is getting faster.”

Typically, about two-thirds of sea level rise comes from melting glaciers and ice sheets, with thermal expansion accounting for the remaining third. However, in 2024, this pattern reversed, with thermal expansion contributing the most.

“With 2024 being the warmest year on record, Earth’s expanding oceans are following suit, reaching their highest levels in three decades,” said Nadya Vinogradova Shiffer, head of NASA’s physical oceanography programs.

Since satellite measurements of ocean height began in 1993, global sea levels have risen by approximately 4 inches (10 cm), with the annual rate of increase more than doubling. The long-term dataset has been maintained by a continuous series of ocean-observing satellites, starting with TOPEX/Poseidon in 1992. The current satellite, Sentinel-6 Michael Freilich, launched in 2020, and its twin, Sentinel-6B, is set to continue precise sea level measurements for years to come.

Heat enters the ocean in several ways, influencing thermal expansion. Normally, warm water remains at the surface, while denser, cooler water stays below. However, in regions with strong winds or powerful ocean currents, such as those in the Southern Ocean, vertical mixing can occur, redistributing heat to deeper waters.

El Niño events, where warm water shifts from the western to the central and eastern Pacific, can also cause significant vertical movement of heat within the ocean, further influencing sea level changes.

As the planet continues to warm, scientists stress the importance of monitoring sea level trends to better understand the long-term impacts of climate change.

Bd-pratidin English/ Jisan

More News
SpaceX Crew-10 mission launches to International Space Station
SpaceX Crew-10 mission launches to International Space Station
Huawei linked to EU Parliament bribery scandal as police raid Belgium, Portugal
Huawei linked to EU Parliament bribery scandal as police raid Belgium, Portugal
OpenAI launches new tools to help businesses build AI agents
OpenAI launches new tools to help businesses build AI agents
Intel hires former board member as new CEO
Intel hires former board member as new CEO
Saturn reigns with highest moon: 128 new, total 274
Saturn reigns with highest moon: 128 new, total 274
SpaceX mission to return Williams, Wilmore postponed
SpaceX mission to return Williams, Wilmore postponed
NASA's latest space telescope launched to map the sky and study galaxies
NASA's latest space telescope launched to map the sky and study galaxies
NASA fires chief scientist, more Trump cuts to come
NASA fires chief scientist, more Trump cuts to come
Meta starts testing its first in-house AI Chip
Meta starts testing its first in-house AI Chip
Apple gears up for major software overhaul
Apple gears up for major software overhaul
Elon Musk claims X targeted in ‘massive cyberattack’
Elon Musk claims X targeted in ‘massive cyberattack’
Nissan tests driverless cars on busy Japan city streets
Nissan tests driverless cars on busy Japan city streets
Latest News
SpaceX Crew-10 mission launches to International Space Station
SpaceX Crew-10 mission launches to International Space Station
16 minutes ago | Tech
Dhaka’s air ‘unhealthy for sensitive group’ Saturday morning
Dhaka’s air ‘unhealthy for sensitive group’ Saturday morning
50 minutes ago | City
Shaikh Juwel now Bidhan Mallik!
Shaikh Juwel now Bidhan Mallik!
59 minutes ago | Special
EU welcomes Armenia-Azerbaijan peace deal conclusion
EU welcomes Armenia-Azerbaijan peace deal conclusion
1 hour ago | International
Ukraine sees Turkiye as key security partner, trade ally
Ukraine sees Turkiye as key security partner, trade ally
1 hour ago | International
Tulip used fake signature to transfer flat to sister
Tulip used fake signature to transfer flat to sister
1 hour ago | National
Guterres to join roundtable on reform proposals
Guterres to join roundtable on reform proposals
2 hours ago | National
NASA reports unexpected rise in global sea levels in 2024
NASA reports unexpected rise in global sea levels in 2024
2 hours ago | Tech
Bangladeshi expat shot dead in South Africa
Bangladeshi expat shot dead in South Africa
2 hours ago | National
Russia, China urge lifting sanctions from Iran
Russia, China urge lifting sanctions from Iran
12 hours ago | International
US vice president sparks immigration debate over green card rights
US vice president sparks immigration debate over green card rights
13 hours ago | International
Govt Moves to Tackle Delays in Legal Trials: Law Adviser
Govt Moves to Tackle Delays in Legal Trials: Law Adviser
13 hours ago | National
Fahim backs new generation
Fahim backs new generation
13 hours ago | Sports
CA, UN chief take iftar with 100,000 Rohingyas in Ukhiya
CA, UN chief take iftar with 100,000 Rohingyas in Ukhiya
14 hours ago | National
China, Russia back Iran as Trump presses Tehran for nuclear talks
China, Russia back Iran as Trump presses Tehran for nuclear talks
14 hours ago | International
Nationwide Vitamin A campaign starts Saturday
Nationwide Vitamin A campaign starts Saturday
15 hours ago | National
Bangladesh to begin campaign against Thailand
Bangladesh to begin campaign against Thailand
15 hours ago | Sports
Still has good relations with Kim Jong Un: Trump
Still has good relations with Kim Jong Un: Trump
15 hours ago | International
You're kidding! Prince William reveals Aston Villa superstitions
You're kidding! Prince William reveals Aston Villa superstitions
15 hours ago | Sports
Jamuna Railway Bridge to be opened on March 18
Jamuna Railway Bridge to be opened on March 18
16 hours ago | National
We are lucky enough as we have sea: CA
We are lucky enough as we have sea: CA
16 hours ago | National
Guterres promises to ensure funds for Rohingya humanitarian aid
Guterres promises to ensure funds for Rohingya humanitarian aid
16 hours ago | National
Mahmoud Khalil felt he was being kidnapped as detention unfolded
Mahmoud Khalil felt he was being kidnapped as detention unfolded
17 hours ago | International
Duterte set to make first ICC appearance
Duterte set to make first ICC appearance
17 hours ago | International
Afghanistan to host Bangladesh for white-ball Series
Afghanistan to host Bangladesh for white-ball Series
17 hours ago | Sports
CA inaugurates Cox's Bazar Airport project
CA inaugurates Cox's Bazar Airport project
17 hours ago | National
Bashir vows to distribute TCB cards to 1cr beneficiaries' over 6 months
Bashir vows to distribute TCB cards to 1cr beneficiaries' over 6 months
17 hours ago | Business
31 dead in Ethiopia cholera outbreak: MSF
31 dead in Ethiopia cholera outbreak: MSF
17 hours ago | International
Polli Kobi Jasimuddin’s 49th death anniversary today
Polli Kobi Jasimuddin’s 49th death anniversary today
18 hours ago | Entertainment
Australia call up three uncapped centre-backs for World Cup qualifiers
Australia call up three uncapped centre-backs for World Cup qualifiers
18 hours ago | Sports
Most Read
Shaikh Juwel now Bidhan Mallik!
Shaikh Juwel now Bidhan Mallik!
53 minutes ago | Special
CA, UN chief take iftar with 100,000 Rohingyas in Ukhiya
CA, UN chief take iftar with 100,000 Rohingyas in Ukhiya
14 hours ago | National
Cabrera expects one more practice match in Saudi
Cabrera expects one more practice match in Saudi
20 hours ago | Sports
Count on UN to help build sustainable future: Guterres tells CA
Count on UN to help build sustainable future: Guterres tells CA
21 hours ago | National
May no one dare to commit such crimes in future: Tarique Rahman
May no one dare to commit such crimes in future: Tarique Rahman
23 hours ago | National
We are lucky enough as we have sea: CA
We are lucky enough as we have sea: CA
16 hours ago | National
Huawei linked to EU Parliament bribery scandal as police raid Belgium, Portugal
Huawei linked to EU Parliament bribery scandal as police raid Belgium, Portugal
23 hours ago | Tech
Turkiye's Atmaca missile achieves historic underwater firing test milestone
Turkiye's Atmaca missile achieves historic underwater firing test milestone
22 hours ago | International
RMG workers block Dhaka-Mymensingh highway demanding bonuses
RMG workers block Dhaka-Mymensingh highway demanding bonuses
21 hours ago | Business
Aamir introduces partner Gauri, opens up about marriage plans
Aamir introduces partner Gauri, opens up about marriage plans
19 hours ago | Entertainment
Israeli govt ‘playing with the lives of our loved ones’
Israeli govt ‘playing with the lives of our loved ones’
18 hours ago | International
Nationwide Vitamin A campaign starts Saturday
Nationwide Vitamin A campaign starts Saturday
14 hours ago | National
Most of the train tickets for western region sold out in 9 minutes
Most of the train tickets for western region sold out in 9 minutes
21 hours ago | National
Guterres promises to ensure funds for Rohingya humanitarian aid
Guterres promises to ensure funds for Rohingya humanitarian aid
16 hours ago | National
UN Secretary General meets Chief Adviser
UN Secretary General meets Chief Adviser
22 hours ago | National
WFP to cut food aid to 1 million people in Myanmar
WFP to cut food aid to 1 million people in Myanmar
18 hours ago | International
Mild heat wave sweeps over parts of country
Mild heat wave sweeps over parts of country
19 hours ago | National
Polli Kobi Jasimuddin’s 49th death anniversary today
Polli Kobi Jasimuddin’s 49th death anniversary today
17 hours ago | Entertainment
CA inaugurates Cox's Bazar Airport project
CA inaugurates Cox's Bazar Airport project
17 hours ago | National
Foreign Affairs Adviser calls on UN Secretary General
Foreign Affairs Adviser calls on UN Secretary General
23 hours ago | National
UN chief Guterres reaches Rohingya camp in Cox’s Bazar
UN chief Guterres reaches Rohingya camp in Cox’s Bazar
19 hours ago | National
5.2 magnitude earthquake strikes India; tremors felt in Jammu and Kashmir
5.2 magnitude earthquake strikes India; tremors felt in Jammu and Kashmir
20 hours ago | International
31 dead in Ethiopia cholera outbreak: MSF
31 dead in Ethiopia cholera outbreak: MSF
17 hours ago | International
Bashir vows to distribute TCB cards to 1cr beneficiaries' over 6 months
Bashir vows to distribute TCB cards to 1cr beneficiaries' over 6 months
17 hours ago | Business
Afghanistan to host Bangladesh for white-ball Series
Afghanistan to host Bangladesh for white-ball Series
17 hours ago | Sports
Mahmoud Khalil felt he was being kidnapped as detention unfolded
Mahmoud Khalil felt he was being kidnapped as detention unfolded
17 hours ago | International
Australia announces spending to boost metals industry
Australia announces spending to boost metals industry
19 hours ago | Business
Crimes like rape happening due to AL's culture of impunity: Rizvi
Crimes like rape happening due to AL's culture of impunity: Rizvi
18 hours ago | National
Yunus & Guterres arrive in Cox's Bazar
Yunus & Guterres arrive in Cox's Bazar
20 hours ago | National
Govt Moves to Tackle Delays in Legal Trials: Law Adviser
Govt Moves to Tackle Delays in Legal Trials: Law Adviser
13 hours ago | National