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Global sea level is rising at an accelerating rate, says NASA study

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8 years ago

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Global sea level is rising at an accelerating rate, says NASA study

[vc_row][vc_column][vc_column_text]Global sea level rise has been accelerating in recent decades, according to a new study based on 25 years of NASA and European satellite data.

The rate of sea level rise has risen from about 2.5 millimeters (0.1 inch) per year in the 1990s to about 3.4 millimeters (0.13 inches) per year today. These increases have been measured by satellite altimeters since 1992, says the study.

This acceleration has been driven mainly by increased ice melting in Greenland and Antarctica, and it has the potential to double the total sea level rise projected by 2100, according to lead author Steve Nerem, a scientist at the Cooperative Institute for Research in Environmental Sciences (CIRES) and the University of Colorado.

If things continue to change at the observed pace, sea level will rise 65 centimeters (26 inches) by 2100, enough to cause significant problems for coastal cities. The team—comprised of scientists from NASA’s Goddard Space Flight Center, the University of Colorado, the University of South Florida, and Old Dominion University—recently published their work in the journal Proceedings of the National Academy of Sciences.

“This is almost certainly a conservative estimate,” said Nerem, who is a member of NASA’s Sea Level Change team. “Our extrapolation assumes that sea level continues to change in the future as it has over the last 25 years. Given the large changes we are seeing in the ice sheets today, that is not likely.”

Rising concentrations of greenhouse gases in Earth’s atmosphere increase the temperature of air and water, which causes sea level to rise in two ways. First, warmer water expands, and this “thermal expansion” of the ocean has contributed about half of the 7 centimeters (2.8 inches) of global mean sea level rise that has been observed over the past 25 years, Nerem said. Second, the water from melting land ice flows into the ocean, which also increases sea level around the world.

The rate of sea level rise has risen from about 2.5 millimeters (0.1 inch) per year in the 1990s to about 3.4 millimeters (0.13 inches) per year today. These increases have been measured by satellite altimeters since 1992, including the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 missions, which have been jointly managed by NASA, France’s Centre national d’etudes spatiales (CNES), the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), and the U.S. National Oceanic and Atmospheric Administration (NOAA).

“The TOPEX/Poseidon/Jason altimetry missions have been essentially providing the equivalent of a global network of nearly half a million accurate tide gauges, providing sea surface height information every 10 days for over 25 years,” said Brian Beckley of NASA Goddard. “As this climate data record approaches three decades, the fingerprints of Greenland and Antarctic land-based ice loss are now being revealed in the global and regional mean sea level estimates.”

Even with a 25-year data record, it can be challenging to detect acceleration. Episodes like volcanic eruptions can create variability; for instance, the eruption of Mount Pinatubo in 1991 decreased global mean sea level just before the TOPEX/Poseidon satellite launch. In addition, global sea level can fluctuate due to climate patterns such as El Niño and La Niña, which influence ocean temperature and global precipitation patterns.

Nerem and the research team used climate models and other data sets to account for the volcanic effects and to determine the El Niño /La Niña effects, ultimately uncovering the underlying rate and acceleration of sea level rise. They also compared their results to tide gauges on Earth’s surface. “Tide gauge measurements are essential for determining the uncertainty in the global mean sea level acceleration estimate,” said co-author Gary Mitchum of the University of South Florida. “They provide the only assessments of the satellite instruments from the ground.”[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_raw_html]JTNDaWZyYW1lJTIwd2lkdGglM0QlMjI4NTQlMjIlMjBoZWlnaHQlM0QlMjI0ODAlMjIlMjBzcmMlM0QlMjJodHRwcyUzQSUyRiUyRnd3dy55b3V0dWJlLmNvbSUyRmVtYmVkJTJGVlluUmVMTkxBWjAlMjIlMjBmcmFtZWJvcmRlciUzRCUyMjAlMjIlMjBhbGxvdyUzRCUyMmF1dG9wbGF5JTNCJTIwZW5jcnlwdGVkLW1lZGlhJTIyJTIwYWxsb3dmdWxsc2NyZWVuJTNFJTNDJTJGaWZyYW1lJTNF[/vc_raw_html][/vc_column][/vc_row]

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OnePlus Freedom Sale 2026 brings discounts on 15, 15R, 13, Nord 5 and tablets

OnePlus Freedom Sale 2026 begins Jan 16 with discounts on phones, tablets, and audio products across online and offline stores.

Published

2 days ago

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January 13, 2026

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OnePlus has announced its Freedom Sale, offering discounts on smartphones, tablets, and audio products across online and offline platforms. The deals include the recently launched OnePlus 15 series, Nord lineup, Buds audio devices, and other gadgets.

When and where to shop

The OnePlus Freedom Sale starts on Jan. 16 and will run both online and offline. Shoppers can purchase smartphones through OnePlus.in, OnePlus Experience Stores, Amazon, as well as offline retailers including Croma, Reliance Digital, Vijay Sales, and others. Tablets are available on Flipkart during the sale period.

Discounts on OnePlus smartphones

  • OnePlus 15: Launched at Rs 72,999, buyers can get an instant Rs 4,000 discount, lowering the effective price to Rs 68,999. Additional benefits include six months of no-cost EMI and a bundled OnePlus Nord Buds 3.
  • OnePlus 13: Originally priced at Rs 69,999, the phone receives an Rs 8,000 price drop, plus a bank discount of Rs 4,000, bringing the price down to Rs 57,999.
  • OnePlus 15R: Listed at Rs 47,999, buyers can avail Rs 3,000 off until Jan 26. After the date, the effective price is Rs 45,999.
  • OnePlus 13R: Launched at Rs 42,999, this device gets up to Rs 6,000 price cut and an additional Rs 1,000 bank discount.

Discounts on OnePlus tablets

  • OnePlus Pad 2: Rs 2,000 instant bank discount reduces the price to Rs 34,999.
  • OnePlus Pad 3: Eligible for a Rs 3,000 instant discount, making the price Rs 44,999. Purchases until Jan 26 include a free Stylo 2 stylus.
  • OnePlus Pad Go 2: Rs 1,000 price drop plus Rs 2,000 bank discount, now Rs 23,999.
  • OnePlus Pad Go: Price reduced to Rs 13,999 after Rs 3,000 cut and Rs 1,000 bank discount.
  • OnePlus Pad Lite: Available for Rs 11,999 after a Rs 2,000 price drop and Rs 2,000 bank discount.

Audio devices on offer

  • OnePlus Buds 4: Rs 700 price cut with Rs 300 bank discount, bringing the effective price to Rs 4,999.
  • OnePlus Buds Pro 3: Now Rs 9,999 after Rs 1,000 price drop and Rs 1,000 bank discount. No-cost EMI options are available for both Buds 4 and Buds Pro 3.

Additional discounts are also applicable to the Nord Buds series — including Nord Buds 3, Nord Buds 3 Pro, and Nord Buds 3R — and neckband devices such as Bullets Wireless Z2 ANC and Bullets Wireless Z3.

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Oppo Reno 15 likely to launch in India soon with upgraded camera and performance features

Oppo is preparing to launch the Reno 15 series in India, focusing on camera improvements, performance stability and a refined design. Here’s what to expect from its pricing and features.

Published

1 month ago

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December 8, 2025

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Oppo is gearing up to introduce its Reno 15 lineup in India, with the series expected to focus heavily on enhanced imaging, performance stability and creator-friendly tools. The smartphone, which has already been launched in China, is anticipated to reach the Indian market in the coming weeks although the company has not yet shared an official date.

Expected price range in India

Industry estimates suggest the standard Oppo Reno 15 will fall in the upper-mid price bracket. While the Reno 15 Pro was launched in China at CNY 3,699 (roughly Rs 46,000), the Reno 15 base model is expected to be more affordable, likely between Rs 32,000 and Rs 38,000, depending on RAM and storage configurations.

Expected features and specifications

The Reno 15 series is expected to highlight Oppo’s improvements in sustained performance, camera capabilities and thermal management. Globally, the models run on ColorOS 16 and feature advanced cooling, particularly aimed at gaming and continuous live-streaming use.

For India, the upcoming Oppo Reno 15 is likely to offer:

  • A high-refresh-rate AMOLED display
  • Triple-camera setup with a primary sensor optimized for better low-light clarity
  • Secondary wide-angle and portrait cameras
  • Front camera with autofocus and AI-led enhancements for live streaming
  • Around 5,000mAh battery with fast wired charging support
  • AI-driven system optimization for smoother long-term performance

Design-wise, it is expected to follow the Reno 15 Pro’s flat-frame style, offering a slim profile, improved durability and brighter display output. With growing demand for creator-focused smartphones in the country, the Reno 15 is being positioned for users interested in mobile photography, vlogging and gaming.

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Samsung Galaxy S25 FE India price leak suggests launch similar to S24 FE

Samsung Galaxy S25 FE India price has surfaced online, hinting at a similar launch price as the S24 FE. The phone brings a 6.7-inch AMOLED display, Exynos 2400 chip, triple rear cameras, and a 4,900mAh battery.

Published

4 months ago

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September 11, 2025

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Samsung Galaxy S25 FE, which was unveiled globally on September 4, is yet to receive official pricing for the Indian market. However, a fresh leak indicates that the handset could debut in India at the same price point as its predecessor, the Galaxy S24 FE.

Expected price and availability in India

According to tipster Yogesh Brar, the Samsung Galaxy S25 FE may be priced at ₹59,999 for the base 8GB RAM + 128GB storage variant in India. This matches the launch price of last year’s Galaxy S24 FE, which started at ₹59,999 for the same configuration. The higher 8GB RAM + 256GB model of the S24 FE was earlier priced at ₹65,999.

Globally, the Galaxy S25 FE has been introduced at $650 (around ₹58,000) for the base variant and $710 (around ₹63,000) for the 8GB + 256GB version. In India, the smartphone is expected to go on sale in October, similar to last year’s rollout schedule for the S24 FE.

The phone is offered in Icyblue, Jetblack, Navy, and White colour options.

Key specifications

  • Display: 6.7-inch full-HD+ Dynamic AMOLED 2X, 120Hz refresh rate, 1,900 nits peak brightness, Vision Booster, Gorilla Glass Victus+ protection.
  • Processor: Exynos 2400 SoC.
  • RAM & Storage: 8GB RAM standard, up to 512GB UFS 4.0 storage.
  • Rear Cameras: 50MP wide-angle + 8MP telephoto + 12MP ultrawide; 8K video recording at 30fps.
  • Front Camera: 12MP selfie shooter.
  • Battery: 4,900mAh with 45W wired and 15W wireless charging.
  • Build: 7.4mm thick, 190g weight, IP68-rated water and dust resistance.
  • Cooling: 10% larger vapour chamber compared to the Galaxy S24 FE.

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