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Shape and depth of ocean floor profoundly influence how carbon is stored there, study shows

Phys.org: Earth science - Mon, 06/03/2024 - 19:53
The movement of carbon between the atmosphere, oceans and continents—the carbon cycle—is a fundamental process that regulates Earth's climate. Some factors, like volcanic eruptions or human activity, emit carbon dioxide into the atmosphere. Others, such as forests and oceans, absorb that CO2. In a well-regulated system, the right amount of CO2 is emitted and absorbed to maintain a healthy climate. Carbon sequestration is one tactic in the current battle against climate change.

Tidal innovations: Charting the course for coastal urban sustainability

Phys.org: Earth science - Mon, 06/03/2024 - 19:32
Estuarine cities, as a unique type of coastal city, face distinct development and conservation challenges. Issues such as global warming, sea-level rise, and human activities significantly impact their ecological environments, making them challenging for achieving sustainable development goals.

Detection of allophane by the Zhurong rover indicates water-limited alteration at Utopia Planitia, Mars

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Enming Ju, Changqing Liu, Jian Chen, Xiaojia Zeng, Yanqing Xin, Ping Liu, Xiaohui Fu, Zongcheng Ling

A shallow (<100 km) ilmenite-bearing pyroxenitic source for young lunar volcanism

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Chengyuan Wang, Yi-Gang Xu, Le Zhang, Zhiming Chen, Xiaoping Xia, Mang Lin, Feng Guo

The role of sulfate in the hydrothermal replacement of aragonite single crystals by calcite

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Pablo Forjanes, José Manuel Astilleros, Lurdes Fernández-Díaz

Magnetization and age of ca. 544 Ma syenite, eastern Canada: Evidence for renewal of the geodynamo

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Tinghong Zhou, Mauricio Ibañez-Mejia, Richard K. Bono, Rory D. Cottrell, Wouter Bleeker, Kenneth P. Kodama, Wentao Huang, Eric G. Blackman, Francis Nimmo, Aleksey V. Smirnov, John A. Tarduno

Microseismic constraints on the mechanical state of the Anninghe-Daliangshan fault zone, southeastern Tibetan Plateau

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Tian Feng, Ruijia Wang, Lihua Fang, Jianping Wu, Ting Yang

Early arrival of the Réunion plume at the base of the Himalaya?

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Yaying Wang, Lingsen Zeng, Li-E Gao, Linghao Zhao, Lilong Yan

An intensified lacustrine methane cycle during the Toarcian OAE (Jenkyns Event) in the Ordos Basin, northern China

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Yizhou Huang, Xin Jin, Richard D. Pancost, David B. Kemp, B.D.A. Naafs

A high-resolution seismic velocity model for East Asia using full-waveform tomography: Constraints on India-Asia collisional tectonics

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Chujie Liu, Rupak Banerjee, Stephen P. Grand, Eric Sandvol, Supriyo Mitra, Xiaofeng Liang, Shengji Wei

Partial melt in mesoscale upper mantle upwellings beneath ocean basins

Earth and Planetary Science Letters - Mon, 06/03/2024 - 19:10

Publication date: 1 August 2024

Source: Earth and Planetary Science Letters, Volume 639

Author(s): Isabelle Panet, Marianne Greff-Lefftz, Barbara Romanowicz

On the variations in equatorial and low-latitude GPS-TEC and assessment of NeQuick-2, IRI-2016 and IRI-2020 models in the African longitude during solar cycle 24–25

Publication date: Available online 23 May 2024

Source: Advances in Space Research

Author(s): Aghogho Ogwala, Feyisara Fehintoluwa Akinbuli, Sampad Kumar Panda, Punyawi Jamjareegulgarn, Md Irfanul Haque Siddiqui, Yusuf Olanrewaju Kayode, Intesaaf Ashraf, Emmanuel Olufemi Somoye

Hybrid plasma simulations of the solar wind interaction with an anthropogenic lunar exosphere

Publication date: Available online 23 May 2024

Source: Advances in Space Research

Author(s): A.R. Poppe, P. Prem, S. Fatemi, R.M. Killen

Assessing the impact of climate change on landslides near Vejle, Denmark, using public data

Natural Hazards and Earth System Sciences - Mon, 06/03/2024 - 19:09
Assessing the impact of climate change on landslides near Vejle, Denmark, using public data
Kristian Svennevig, Julian Koch, Marie Keiding, and Gregor Luetzenburg
Nat. Hazards Earth Syst. Sci., 24, 1897–1911, https://doi.org/10.5194/nhess-24-1897-2024, 2024
In our study, we analysed publicly available data in order to investigate the impact of climate change on landslides in Denmark. Our research indicates that the rising groundwater table due to climate change will result in an increase in landslide activity. Previous incidents of extremely wet winters have caused damage to infrastructure and buildings due to landslides. This study is the first of its kind to exclusively rely on public data and examine landslides in Denmark.

A Holocene alpine seismic chronicle from Lake Aiguebelette (NW French Alps)

Natural Hazards and Earth System Sciences - Mon, 06/03/2024 - 19:09
A Holocene alpine seismic chronicle from Lake Aiguebelette (NW French Alps)
Mathilde Banjan, Christian Crouzet, Hervé Jomard, Pierre Sabatier, David Marsan, and Erwan Messager
Nat. Hazards Earth Syst. Sci. Discuss., https//doi.org/10.5194/nhess-2024-83,2024
Preprint under review for NHESS (discussion: open, 0 comments)
This research shows how lake sediments reveal seismic activity history over extended periods, surpassing historical records. Sediment analysis from Lake Aiguebelette in the Western Alps found 32 layers likely caused by earthquakes over the Holocene. Robust dating methods correlated these layers with known historical earthquakes. Results suggest Lake Aiguebelette's sediment records mainly reflect local seismic events, enhancing understanding of earthquake recurrence and regional seismic history.

Can remote sensing combustion phase improve estimates of landscape fire smoke emission rate and composition?

Atmos. Meas. techniques - Mon, 06/03/2024 - 18:52
Can remote sensing combustion phase improve estimates of landscape fire smoke emission rate and composition?
Farrer Owsley-Brown, Martin J. Wooster, Mark J. Grosvenor, and Yanan Liu
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2024-73,2024
Preprint under review for AMT (discussion: open, 0 comments)
Landscape fires produce vast amounts of smoke, affecting the atmosphere locally and globally. Whether a fire is flaming or smoldering strongly impacts the rate at which smoke is produced as well as its composition. This study tested two methods to determine these combustion phases in laboratory fires and compared them to the smoke emitted. One of these methods improved estimates of smoke emission significantly. This suggests potential for improvement in global emission estimates.

Innovative aerosol hygroscopic growth study from Mie–Raman–fluorescence lidar and microwave radiometer synergy

Atmos. Meas. techniques - Mon, 06/03/2024 - 18:25
Innovative aerosol hygroscopic growth study from Mie–Raman–fluorescence lidar and microwave radiometer synergy
Robin Miri, Olivier Pujol, Qiaoyun Hu, Philippe Goloub, Igor Veselovskii, Thierry Podvin, and Fabrice Ducos
Atmos. Meas. Tech., 17, 3367–3375, https://doi.org/10.5194/amt-17-3367-2024, 2024
This paper focuses on the use of fluorescence to study aerosols with lidar. An innovative method for aerosol hygroscopic growth study using fluorescence is presented. The paper presents case studies to showcase the effectiveness and potential of the proposed approach. These advancements will contribute to better understanding the interactions between aerosols and water vapor, with future work expected to be dedicated to aerosol–cloud interaction.

Dual adaptive differential threshold method for automated detection of faint and strong echo features in radar observations of winter storms

Atmos. Meas. techniques - Mon, 06/03/2024 - 18:25
Dual adaptive differential threshold method for automated detection of faint and strong echo features in radar observations of winter storms
Laura M. Tomkins, Sandra E. Yuter, and Matthew A. Miller
Atmos. Meas. Tech., 17, 3377–3399, https://doi.org/10.5194/amt-17-3377-2024, 2024
We have created a new method to better identify enhanced features in radar data from winter storms. Unlike the clear-cut features seen in warm-season storms, features in winter storms are often fuzzier with softer edges. Our technique is unique because it uses two adaptive thresholds that change based on the background radar values. It can identify both strong and subtle features in the radar data and takes into account uncertainties in the detection process.

Accounting for the effect of aerosols in GHGSat methane retrieval

Atmos. Meas. techniques - Mon, 06/03/2024 - 18:25
Accounting for the effect of aerosols in GHGSat methane retrieval
Qiurun Yu, Dylan Jervis, and Yi Huang
Atmos. Meas. Tech., 17, 3347–3366, https://doi.org/10.5194/amt-17-3347-2024, 2024
This study estimated the effects of aerosols on GHGSat satellite methane retrieval and investigated the performance of simultaneously retrieving aerosol and methane information using a multi-angle viewing method. Results suggested that the performance of GHGSat methane retrieval improved when aerosols were considered, and the multi-angle viewing method is insensitive to the satellite angle setting. This performance assessment is useful for improving future GHGSat-like instruments.

Exploring a high-level programming model for the NWP domain using ECMWF microphysics schemes

Geoscientific Model Development - Mon, 06/03/2024 - 18:14
Exploring a high-level programming model for the NWP domain using ECMWF microphysics schemes
Stefano Ubbiali, Christian Kühnlein, Christoph Schär, Linda Schlemmer, Thomas C. Schulthess, Michael Staneker, and Heini Wernli
Geosci. Model Dev. Discuss., https//doi.org/10.5194/gmd-2024-92,2024
Preprint under review for GMD (discussion: open, 0 comments)
We explore a high-level programming model for GPU porting of NWP model codes, based on the Python domain-specific library GT4Py. We present a Python rewrite with GT4Py of the ECMWF cloud microphysics scheme and the associated tangent-linear and adjoint algorithms. We find excellent portability, competitive performance and robust execution on diverse CPU and GPU architectures. The additional advantages in terms of maintainability, productivity and readability are also highlighted.

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