Ionospheric Response to the M‐ and X‐Class Solar Flares of 28 October 2021 Over the African Sector by John Bosco Habarulema, Mpho Tshisaphungo, Zama Thobeka Katamzi‐Joseph, Tshimangadzo Merline Matamba, Rendani Nndanganeni

“…Following the peak of the M2.2 solar flare at 1028 UT, an enhancement reaching about 12% over the background in total electron content (TEC) is observed on 28 October 2021 especially in the Southern hemispheric part of the African sector within the latitude range of 20°–40°S. In response, mid latitude ionosonde data showed that there were no echoes from the E and F1 layers for about 2 hr during ≈1025–1225 UT, restricting complex modes of HF communication such as double hops (1F1E) utilizing a combination of more than one ionospheric layer.…”
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Development and Validation of Precipitation Enhanced Densities for the Empirical Canadian High Arctic Ionospheric Model by C. Watson, D. R. Themens, P. T. Jayachandran

“…Abstract The Empirical Canadian High Artic Ionospheric Model (E‐CHAIM) provides the four‐dimensional ionosphere electron density at northern high latitudes (>50° geomagnetic latitude). Despite its emergence as the most reliable model for high‐latitude ionosphere density, there remain significant deficiencies in E‐CHAIM's representation of the lower ionosphere (below ∼200 km) due to a sparsity of reliable measurements at these altitudes, particularly during energetic particle precipitation events. …”
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Nighttime Geomagnetic Response to Jumps of Solar Wind Dynamic Pressure: A Possible Cause of Québec Blackout in March 1989 by T. Zhang, Y. Ebihara, T. Tanaka

“…Abstract By performing a global magnetohydrodynamic (MHD) simulation, we investigated magnetic disturbances on the ground at high‐latitudes in response to jumps in the solar wind dynamic pressure, namely a sudden commencement (SC). …”
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A glimpse into the biogeography, seasonality, and ecological functions of arctic marine Oomycota by Brandon T. Hassett, Marco Thines, Anthony Buaya, Sebastian Ploch, R. Gradinger

“…Abstract High-latitude environments are warming, leading to changes in biological diversity patterns of taxa. …”
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Air temperature estimation based on environmental parameters using remote sensing data by Chenoor Mohammadi, Manouchehr Farajzadeh, Yousef Ghavdel Rahimi, Abbas Ali Aliakbar Bidokhti

“…This study is aimed at estimating monthly mean air temperature (Ta) using the MODIS Land Surface Temperature (LST), Normalized Difference Vegetation Index (NDVI), latitude, altitude, slope gradient and land use data during 2001-2015. …”
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Dayside Magnetic Depression Following Interplanetary Shock Arrivals During the February 1958 and July 1959 Superstorms by Shinichi Ohtani, Yoko Odagi, Ayako Matsuoka, Toshihiko Iyemori

“…Abstract The present study investigates mid‐ and low‐latitude ground magnetic disturbances observed following the arrival of three interplanetary (IP) shocks during the super‐geomagnetic storms of February 1958 and July 1959. …”
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Twitter user geolocation method based on single-point toponym matching and local toponym filtering by Jin XUE, Fuxiang YUAN, Yimin LIU, Meng ZHANG, Yaqiong QIAO, Xiangyang LUO

“…The availability of accurate toponyms in user tweets is crucial for geolocating Twitter users.However, existing methods for locating Twitter users often suffer from limited quantity and reliability of acquired toponyms, thus impacting the accuracy of user geolocation.To address this issue, a twitter user geolocation method based on single-point toponym matching and local toponym filtering was proposed.A toponym type discriminating algorithm based on the aggregation degree of locations of the toponym was designed.In the proposed algorithm, a single-point toponym database was generated to provide more reliable toponyms extracted from tweets.Then, according to a proposed local place name filtering algorithm based on the aggregation degree of user location, the aggregation degree of user location centered on the longitude and latitude of toponyms and the average longitude and latitude of users were calculated.This process helped in extracting local toponyms with a high aggregation degree, which enhances the reliability of toponyms used in geolocation.Finally, a user-toponym heterogeneous graph was constructed based on user social relationships and user mentions of toponyms, and users were located by graph representation learning and neural networks.A large number of user geolocation experiments were conducted based on two commonly used public datasets in this field, namely GEOTEXT and TW-US.Comparisons with nine existing typical methods for Twitter user geolocation, including HGNN, ReLP, and GCN, demonstrate that our proposed method achieves significantly higher geolocation accuracy.On the GEOTEXT dataset, the average error is reduced by 7.3～342.8 km, the median error is reduced by 2.4～354.4 km, and the accuracy of large area-level geolocation is improved by 1.3%～26.3%.On the TW-US dataset, the average error is reduced by 8.6～246.6 km, the median error is reduced by 5.7～149.7 km, and the accuracy of large area-level geolocation is improved by 1.5%～20.5%.…”
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Geomagnetic Storm Effects on the LEO Proton Flux During Solar Energetic Particle Events by Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel

“…Our results showed that the simulated solar proton flux was more enhanced in the high‐latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. …”
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Development of the Ionospheric E‐Region Prompt Radio Occultation Based Electron Density (E‐PROBED) Model by Cornelius Csar Jude H. Salinas, Dong L. Wu, Nimalan Swarnalingam, Daniel Emmons, Liying Qian

“…This work first concludes that E‐PROBED can conveniently provide E‐region Ne latitude—local time variabilities and structures that COSMIC‐1 observes. …”
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Prevalence of lumbar disc herniation and its associated factors: A cross-sectional study in Gansu. by Zhiwei Chen, Jirong Zhao, Li Wang, Hong Shao, Liangjia Cao, Xueyun He, Zhenghan Yang, Junfei Ma, Qianwen Chen, Peng Jiang, Licun Zhang, Jihong Hu

“…<h4>Conclusion</h4>The prevalence of LDH was high, varying significantly with latitude, gender, and nationality, indicating potential lifestyle and demographic influences in Gansu.…”
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Impact of Tibetan plateau warming amplification on the interannual variations in East Asia Summer precipitation by XiaoJing Jia, XinHai Chen, Wei Dong, Hao Ma, JingWen Ge, QiFeng Qian

“…These circulation changes weaken the East Asian subtropical jet, form a notable double jet configuration, and promote subsidence over mid-latitude East Asia. Moreover, anomalously warm sea surface temperatures in the Northwestern Pacific reinforce the TA-Pre_EA relationship by contributing to the mid-latitude East Asia-North Pacific high-pressure belt. …”
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Daytime Equatorial Spread F‐Like Irregularities Detected by HF Doppler Receiver and Digisonde by B. Olugbon, E. O. Oyeyemi, A. Kascheyev, A. B. Rabiu, A. A. Obafaye, O. O. Odeyemi, A. O. Adewale

“…This study presents two rare daytime ESF‐like events which occurred over an interval ∼2 h and were detected by the HF Doppler receiver located in Lagos (LAG: geographic: 3.27°E, 6.48°N; dip latitude −1.72°) and the Lowell Digisonde at Ilorin (ILR; 4.68°E, 8.50°N; dip latitude −1.25°), managed by Lowell GIRO Data Center (LGDC). …”
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Ionospheric Response to the Extreme 2024 Mother's Day Geomagnetic Storm Over the Latin American Sector by C. S. Carmo, L. Dai, C. M. Wrasse, D. Barros, H. Takahashi, C. A. O. B. Figueiredo, C. Wang, H. Li, Z. Liu

“…This structure drifted westward at a velocity of ∼140 m/s and had a large latitudinal extension, reaching about 36° geomagnetic latitude, this corresponds to an apex height of around 4,500 km. …”
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Life cycle assessment of heat, CO2 from composting for greenhouse applications by Jiamin Wang, BiChen Tian, Rui Li, Jianming Li

“…Greenhouses play a crucial role in agricultural production, especially in high-latitude regions requiring supplemental heating during winter. …”
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Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation by Kelias Oliveira, Alison de Oliveira Moraes, Emanoel Costa, Marcio Tadeu de Assis Honorato Muella, Eurico Rodrigues de Paula, Waldecir Perrella

“…Among several applications, it has been used in the characterization of low-latitude amplitude scintillation, which frequently occurs during the nighttime of particular seasons of high solar flux years, affecting radio signals that propagate through the ionosphere. …”
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A two-step geospace storm as a new tool of opportunity for experimentally estimating the threshold condition for the formation of a substorm current wedge by L. F. Chernogor

“…The strength fluctuations showed a considerable increase of up to 300–700 <span class="inline-formula">nT</span> at high latitudes. The northward component of the geomagnetic field, <span class="inline-formula"><i>X</i></span>, exhibited the greatest perturbations at all latitudes in both hemispheres as the level of strength fluctuations decreased with decreasing latitude. …”
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Three Worlds in One: Venus as a Natural Laboratory for the Effect of Rotation Period on Atmospheric Circulation by Maureen Cohen, James Holmes, Stephen Lewis, Manish Patel, Sébastien Lebonnois

“…The atmosphere falls into three circulation regimes: (1) from the surface to 20 km, the Rossby radius of deformation exceeds the planetary radius and no Rossby waves form; (2) from 20 to 50 km, the tropical Rossby radius becomes smaller than the planetary radius, and a circulation regime characterized by a superrotating equatorial jet and mid-latitude Rossby gyres appears; (3) from 50 to 70 km, the extratropical Rossby radius becomes smaller than the planetary radius, the jet develops mid-latitude maxima, and the Rossby gyres shift to high latitudes. …”
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The southward shift of hurricane genesis over the northern Atlantic Ocean by Xi Cao, Renguang Wu, Xianling Jiang, Yifeng Dai, Pengfei Wang, Lei Zhou, Liang Wu, Difei Deng, Ying Sun, Shangfeng Chen, Kaiming Hu, Zhibiao Wang, Lu Liu, Xiaoqing Lan, Zhencai Du, Junhu Zhao, Xiao Xiao

“…The present research suggests a potential increase in the hazards confronted by low-latitude islands and coastal nations in Northern America.…”
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Analysis of the Stockholm Public Health Cohort: Exploring How Ultraviolet Radiation and Other Factors Associate with Skin Cancer by Lina U. Ivert, Henrik Dal, Ylva Rodvall, Bernt Lindelöf

“…The four UVR-related factors (sunbed use, being diagnosed with AK or MN, birthplace latitude) had a significant association with at least one of the three skin cancers that remained after adjustment including behavioural, social, hereditary, and medical factors. …”
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Asynchronicity of deglacial permafrost thawing controlled by millennial-scale climate variability by Xinwei Yan, Xu Zhang, Bo Liu, Huw T. Mithan, John Hellstrom, Sophie Nuber, Russell Drysdale, Junjie Wu, Fangyuan Lin, Ning Zhao, Yuao Zhang, Wengang Kang, Jianbao Liu

“…Tibetan Plateau (TP), the Earth’s largest low-latitude and alpine permafrost region, remains underexplored. …”
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