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Evaluation of non-stationary spatial relationship between meteorological-environmental parameters and PM<sub>2.5</sub>

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): S. Roy, C.M. Rao, M. Abioui

Self-rigidizable Kapton-SMA conical booms: A comprehensive numerical and experimental study

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): Vikas Rastogi, S.H. Upadhyay, Kripa Sankar Singh

Machine learning-aided generative design methodology for a Martian regolith habitation shell

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): Gökhan Dede

The current situation of Russia’s GNSS continuous operating reference station network and thinking on future development

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): Yizhi Cao, Eduard Kuznetsov, Chunyang Miao, Siyuan Chen, Tianxin Meng

A new method for high-precision starlight refraction indirect horizon-sensing positioning of atmospheric flight vehicles

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): Xianjun Zhan, Xinlong Wang, Xiaodong Hu, Xiaokun Ding, Qing Wei

Occurrence of ionospheric scintillations under different solar and geomagnetic conditions over low latitude station Varanasi

Publication date: 1 April 2024

Source: Advances in Space Research, Volume 73, Issue 7

Author(s): Mukulika Mondal, Sanjay Kumar, S. Banola, A.K. Singh

Responses of the Nigerian low-latitude ionosphere to geomagnetic storms of the ascending and maximum phases of solar cycle 24

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): E.O. Oyeyemi, A.O. Akala, D. Okoh, O.O. Odeyemi, B. Olugbon, P.O. Amaechi, O.J. Oyedokun, O.R. Idolor

Path and control-constrained longitudinal guidance for Mars entry

Publication date: 15 April 2024

Source: Advances in Space Research, Volume 73, Issue 8

Author(s): Bo Tang, Youmin Gong, Yanning Guo, Minwen Guo, Weiren Wu

Researchers find the more flood driving factors there are, the more extreme a flood is

Phys.org: Earth science - Wed, 03/27/2024 - 18:00
There are several factors that play an important role in the development of floods: air temperature, soil moisture, snow depth, and the daily precipitation in the days before a flood. In order to better understand how individual factors contribute to flooding, UFZ researchers examined more than 3,500 river basins worldwide and analyzed flood events between 1981 and 2020 for each of them.

Forest regeneration projects failing to offset carbon emissions

Phys.org: Earth science - Wed, 03/27/2024 - 17:46
Forest regeneration projects that have received tens of millions of carbon credits and dominate Australia's carbon offset scheme have had negligible impact on woody vegetation cover and carbon sequestration, new research from The Australian National University (ANU) has found.

Version 8 IMK/IAA MIPAS measurements of CFC-11, CFC-12, and HCFC-22

Atmos. Meas. techniques - Wed, 03/27/2024 - 17:35
Version 8 IMK/IAA MIPAS measurements of CFC-11, CFC-12, and HCFC-22
Gabriele P. Stiller, Thomas von Clarmann, Norbert Glatthor, Udo Grabowski, Sylvia Kellmann, Michael Kiefer, Alexandra Laeng, Andrea Linden, Bernd Funke, Maya García-Comas, and Manuel López-Puertas
Atmos. Meas. Tech., 17, 1759–1789, https://doi.org/10.5194/amt-17-1759-2024, 2024
CFC-11, CFC-12, and HCFC-22 contribute to the depletion of ozone and are potent greenhouse gases. They have been banned by the Montreal protocol. With MIPAS on Envisat the atmospheric composition could be observed between 2002 and 2012. We present here the retrieval of their atmospheric distributions for the final data version 8. We characterise the derived data by their error budget and their spatial resolution. An additional representation for direct comparison to models is also provided.

Gravity waves above the Northern Atlantic and Europe during streamer events using ADM-Aeolus

Atmos. Meas. techniques - Wed, 03/27/2024 - 17:35
Gravity waves above the Northern Atlantic and Europe during streamer events using ADM-Aeolus
Sabine Wüst, Lisa Küchelbacher, Franziska Trinkl, and Michael Bittner
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2024-18,2024
Preprint under review for AMT (discussion: open, 0 comments)
Information about the energy of gravity waves (GWs) is crucial for improving atmosphere models. Most space-based studies report on the potential energy. We use ADM-Aeolus wind data to derive a lower limit of the kinetic energy density. However, the data quality is a challenge for such analyses, as the accuracy of the data is in the range of typical GW amplitudes. We find a temporal coincidence between enhanced or breaking planetary waves and enhanced gravity wave kinetic energy density.

Researchers add virtual spatial displacement to extreme flooding scenarios

Phys.org: Earth science - Wed, 03/27/2024 - 17:09
Floods affect more people worldwide than any other natural hazard, causing enormous damage that is expected to increase in a warming world. However, people and decision-makers in vulnerable regions are often unwilling to prepare for exceptionally severe events because they are difficult to imagine and beyond their experience.

Newly uncovered history of a key ocean current carries a warning on climate

Phys.org: Earth science - Wed, 03/27/2024 - 16:00
It carries more than 100 times as much water as all the world's rivers combined. It reaches from the ocean's surface to its bottom, and measures as much as 2,000 kilometers across. It connects the Indian, Atlantic and Pacific oceans, and plays a key role in regulating global climate. Continuously swirling around the southernmost continent, the Antarctic Circumpolar Current is by far the world's most powerful and consequential mover of water.

Anthropocene or not, it is our current epoch that we should be fighting for

Phys.org: Earth science - Wed, 03/27/2024 - 15:00
Has the Holocene epoch of the past 11,700 years been supplanted by the proposed Anthropocene epoch of today? Although it's broadly accepted that planetary systems have changed as a result of human influence, a panel of experts at the International Union of Geological Sciences answered a firm "no" when they recently voted down recognizing the start of the new epoch.

Five new hydrothermal vents discovered in the Eastern Tropical Pacific Ocean

Phys.org: Earth science - Wed, 03/27/2024 - 14:59
The pace of discovery in the oceans leaped forward thanks to teamwork between a deep-sea robot and a human occupied submarine leading to the discovery of five new hydrothermal vents in the eastern Tropical Pacific Ocean.

Uncovering earthquake evidence in Azerbaijan's greater Caucasus mountains

Phys.org: Earth science - Wed, 03/27/2024 - 14:57
The Greater Caucasus mountain range stretches between the Black and Caspian Seas across parts of Russia, Georgia, and Azerbaijan. These formidable peaks are the result of the subduction of the Arabian plate beneath the Eurasian plate.

Researchers discover ultra-low velocity zone beneath the Himalayas

Phys.org: Earth science - Wed, 03/27/2024 - 13:57
Yale researchers are delving deep beneath the Himalayas to investigate dynamic geological processes near the boundary of Earth's core and mantle.

Pair filamentation and laser scattering in beam-driven QED cascades

Physical Review E (Plasma physics) - Wed, 03/27/2024 - 10:00

Author(s): Kenan Qu, Alec Griffith, and Nathaniel J. Fisch

According to quantum electrodynamics, in very strong electromagnetic fields electron–positron pairs can be created, and with a high density of pairs an electron-positron plasma can form. In this paper, the authors simulate this process for a relativistic electron beam colliding with an intense laser pulse, and identify observations that could be used as diagnostics in future experiments.


[Phys. Rev. E 109, 035208] Published Wed Mar 27, 2024

New computational technique enhances accuracy of measurements in nuclear geoscience

Phys.org: Earth science - Tue, 03/26/2024 - 20:38
Conventional nuclear measurement techniques, such as Monte Carlo simulations, are known for their extensive computational demands and prolonged processing times, especially when applied to unconventional reservoirs characterized by complex lithologies. These traditional methods often fall short in efficiently interpreting geological formations, presenting significant challenges in environments where precision and speed are critical.

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