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Amazon rainforest flipped to carbon source during 2023 extreme drought, study shows

Phys.org: Earth science - Mon, 02/16/2026 - 20:20
The Amazon rainforest is of crucial importance to the Earth's ecosystem, given its capacity to store substantial amounts of carbon in its vegetation. In 2023, the region experienced unusually high temperatures, reaching 1.5°C above the 1991–2020 average, accompanied by unusual levels of atmospheric dryness from September to November. These conditions were caused by warmer water temperatures in the Atlantic and Pacific Oceans that resulted in diminished moisture transport from the Atlantic to South America, and led to drought in the second half of 2023. An international research team, led by Santiago Botia at the Max Planck Institute for Biogeochemistry, studied how these extreme conditions affected the Amazon rainforest's ability to absorb and store carbon.

Abnormal response of ionospheric irregularities in the eastern Pacific region during a great magnetic storm in April 2023

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: Available online 11 February 2026

Source: Advances in Space Research

Author(s): Sheping Shang, Jiankui Shi, Maosheng He, Zhengwei Cheng, Guojun Wang, Zheng Wang

Assessment of satellite altimetry accuracy (Sentinel-3A/B) with in-situ sea level data at Livingston Island, Antarctica

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Olga Luengo-S, Francesco De Biasio, Miguel Bruno, Stefano Vignudelli, Manuel Berrocoso, Jesús Gómez-Enri

Improved attitude modeling for GPS III satellites in the eclipse season

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Oliver Montenbruck, Bingbing Duan, Peter Steigenberger, Urs Hugentobler

Integrated Gravimetric and Seismological Analysis of Central Cameroon: Tectonic Framework and Hazard Implications

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Willy Lemotio, Luan Thanh Pham, Paul Gautier Kamto, Nguiya Sévérin

A novel CNN-based method using GNSS tomography and WRF data for regional rainfall prediction

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Longjiang Li, Saeid Haji-Aghajany, Kefei Zhang, Witold Rohm, Xiaoming Wang, Suqin Wu, Haobo Li, Dongsheng Zhao, Minghao Zhang

A compensatory OSB self-calibration method for user terminals when real-time PPP services lack precise code bias corrections

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Xiaojie Li, Lin Pan, Cancan Wang, Hai Sha, Jinglei Guo, Lu Zhang, Yingying Zhao

Space debris index definition for multi-purpose active debris removal mission design

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Giacomo Borelli, Camilla Colombo

Lifetime modeling of one unit to three unit CubeSats

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Aaron Russell, Laura Peticolas, Noé Lugaz, Sanjeev Mehta

Rainfall forecasting based on the multi-source data fusion and multi-dimension interpolation method for GNSS stations lacking or sparse regions

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Mingkun Su, Jinan Wang, Jian Wang, Cong Chen, Junna Shang, Chao Wu

Aspect ratio-dependent fragmentation and debris cloud evolution in hypervelocity impact of cylindrical projectiles

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Duo Zhang, Gongshun Guan, Jianing Zhang

Potential correlation between the 2015 Nepal seismic events and heat wave occurrence in southern India

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): A. Akilan, K.K. Abdul Azeez, H. Schuh, S. Balaji, M. Satyanarayanan, Gunda Goutham Krishna Teja, Sravan Kumar Kotluri, H.V.S. Satyanarayana

Integrated attitude-orbit control and control allocation of solar sails hovering an asteroid

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Wenjun Yuan, Hong Deng, Shuqi Gao, Jiafu Liu

A path towards effective exploitation of quantum sensors in future satellite gravity missions

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): João Encarnação, Christian Siemes, Ilias Daras, Olivier Carraz, Aaron Strangfeld, Philipp Zingerle, Roland Pail

Dynamic vegetation changes and driving factors analysis of the Guanzhong Plain urban agglomeration

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Yuke Liu, Chenlu Huang, Chun Yang, Weidong Huang

Investigations on the Aerosol Type Classification using Machine Learning Techniques over Multiple AERONET Sites in India

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): M. Anitha, Lakshmi Sutha Kumar

Improving positioning performance of PPP-RTK by tightly coupled integration with INS in urban environment

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Laihong Zhang, Weixing Zhang, Sidi Zhao, Yidong Lou

Multiple scatterers detection in SAR tomography based on decomposition of SAR images

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Mehrnoosh Omati, Mahmod Reza Sahebi

Machine learning reveals accelerated sea surface warming and future projections in Türkiye’s semi-enclosed seas

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Muharrem Hilmi Erkoç

Multi-model integration for karst carbon storage dynamics in Guizhou, China: A machine learning-driven approach with policy implications under carbon neutrality goals

Recent articles in Advances in Space Research - Mon, 02/16/2026 - 19:11

Publication date: 15 February 2026

Source: Advances in Space Research, Volume 77, Issue 4

Author(s): Jianfeng Wu, Shengtao Wei, Haichao Hao, Zhongyang Guo, Dokrak Marod, Guangjie Luo, Bing Zhang, Fei Shen, Yangyang Wu, Qiwei Chen, Jingjing Liao, Guanghong Zhou

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