Wind Speed Forecasting Using Wavelet Analysis And Recurrent Artificial Neural Networks Based On Local Measurements In Singida Region, Tanzania,
2023
Department of Physics, University of Dar es Salaam, P.O. Box 35063, Dar es Salaam, Tanzania
Wind Speed Forecasting Using Wavelet Analysis And Recurrent Artificial Neural Networks Based On Local Measurements In Singida Region, Tanzania, Rajabu J. Mangara, Mwingereza J. Kumwenda
Tanzania Journal of Science
High accuracy wind speed forecasting is essential for wind energy harvest and plays a significant role in wind farm management and grid integration. Wind speed is intermittent in nature, which makes the forecasting to be a big challenge. In the present study, three hybrid single-step wind speed forecasting techniques are proposed and tested by local measurement data in Singida region, Tanzania. The three techniques are based on Wavelet Analysis (WA), Back Propagation (BP) optimization algorithm, and Recurrent Neural Network (RNN). They are referred to as WA-RNN, BP-RNN, and WA-BP-RNN. The model results showed that WA-BP-RNN outperforms the other two proposed …
2023 September 28 - Tennessee Weekly Drought Summary,
2023
East Tennessee State University
2023 September 28 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
On The Propagation Of Whistler-Mode Waves In The 2 Magnetic Ducts,
2023
Embry-Riddle Aeronautical University
On The Propagation Of Whistler-Mode Waves In The 2 Magnetic Ducts, Salman A. Nejad, Anatoly V. Streltsov
Publications
This paper studies extremely-low frequency (ELF) whistler-mode waves’ behavior within small-scale magnetic field irregularities in the Earth’s magnetosphere, known as magnetic ducts. Based on the magnetic fields’ magnitude inside and outside these ducts, they are categorized as high-magnetic ducts (HBD) and low-magnetic ducts (LBD). Using the whistler-mode dispersion relation analysis, our primary focus is to show that LBDs are prone to leak electromagnetic energy outside the duct. We further investigate the hypothesis that whistlers can propagate within LBDs without any signal loss when the width of the duct corresponds to an integer multiple of the perpendicular wavelengths of the waves …
A "Boreing" Night Of Observations Of The Upper Mesosphere And Lower Thermosphere Over The Andes Lidar Observatory,
2023
The Aerospace Corporation
A "Boreing" Night Of Observations Of The Upper Mesosphere And Lower Thermosphere Over The Andes Lidar Observatory, J. H. Hecht, Alan Liu, D. C. Fritts, R. L. Walterscheid, L. J. Gelinas, R. J. Rudy
Publications
A very high-spatial resolution (∼21-23 m pixel at 85 km altitude) OH airglow imager at the Andes Lidar Observatory at Cerro Pach´on, Chile observed considerable ducted wave activity on the night of October 29-30, 2016. This instrument was collocated with a Na wind-temperature lidar that provided data revealing the occurrence of strong ducts. A large field of view OH and greenline airglow imager showed waves present over a vertical extent consistent with the altitudes of the ducting features identified in the lidar profiles. While waves that appeared to be ducted were seen in all imagers throughout the observation interval, the …
2023 September 21 - Tennessee Weekly Drought Summary,
2023
East Tennessee State University
2023 September 21 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
Research On Low-Carbon Transition Pathways And Suggestions For Climate Cooperation Of Bri Countries,
2023
Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China
Institute of Energy, Environment and Economy, Tsinghua University, Beijing 100084, China
Research On Low-Carbon Transition Pathways And Suggestions For Climate Cooperation Of Bri Countries, Kaiwe Zhu, Xianchun Tan, Baihe Gu, Jianping Zhang, Lingsi Kong
Bulletin of Chinese Academy of Sciences (Chinese Version)
Climate cooperation among Belt and Road Initiative (BRI) countries holds significant practical importance for achieving low-carbon transition and sustainable development within the BRI framework. To analyze the pathway towards low-carbon transition under different representative concentration pathway (RCP) scenarios and emission quota allocation methods, the CGEM-BRI model was developed. The study also examined the potential requirements for climate finance, capacity building, and management system. Based on these findings, recommendations for climate cooperation between China and BRI countries were formulated. The study revealed that in order to limit global temperature rise for 1.5℃ in 2100, renewable energy sources should account for a …
Microplastics Distribution Within Western Arctic Seawater And Sea Ice,
2023
The University of Texas Rio Grande Valley
Microplastics Distribution Within Western Arctic Seawater And Sea Ice, Alessandra D’Angelo, Nicole Trenholm, Brice Loose, Laura Glastra, Jacob Strock, Jongsun Kim
School of Earth, Environmental, & Marine Sciences Faculty Publications
Microplastic pollution has emerged as a global environmental concern, exhibiting wide distribution within marine ecosystems, including the Arctic Ocean. Limited Arctic microplastic data exist from beached plastics, seabed sediments, floating plastics, and sea ice. However, no studies have examined microplastics in the sea ice of the Canadian Arctic Archipelago and Tallurutiup Imanga National Marine Conservation Area, and few have explored Arctic marginal seas’ water column. The majority of the microplastic data originates from the Eurasian Arctic, with limited data available from other regions of the Arctic Ocean. This study presents data from two distinct campaigns in the Canadian Arctic Archipelago …
Climate Technology Demand Assessment For Participating Countries In Belt And Road Initiative And Policy Recommendations For Promoting South-South Technology Cooperation,
2023
School of Agricultural Economics and Rural Development, Renmin University of China, Beijing 100872, China
Climate Technology Demand Assessment For Participating Countries In Belt And Road Initiative And Policy Recommendations For Promoting South-South Technology Cooperation, Minpeng Chen, Qiang Liu, Meixun Gao, Fei Teng
Bulletin of Chinese Academy of Sciences (Chinese Version)
Belt and Road countries and regions have increasingly recognized the urgent need for climate mitigation and adaptation in order to achieve the Paris Agreement and the Sustainable Development Goals (SDGs). Transferring and disseminating climate technologies are effective ways in which developing countries in the region can enhance their capacity to address the challenges of climate change. This study assesses the characteristics of climate change technology needed in Belt and Road countries and regions, based on the United Nations Framework Convention on Climate Change's Technology Needs Assessment (TNA) report as well as the Cooperative Patent Classification (CPC) system. It identifies and …
Main Climate Change Characteristics And Disaster Risks Oriented Towards Carbon Neutrality Over The Belt And Road Regions,
2023
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Main Climate Change Characteristics And Disaster Risks Oriented Towards Carbon Neutrality Over The Belt And Road Regions, Jingyong Zhang, Jing He, Lixia Zhang, Zhencai Du, Renqiang Li, Ming Xu
Bulletin of Chinese Academy of Sciences (Chinese Version)
Climate change has been widely recognized as one of most severe risks that the world faces. The recent 50 years are the warmest period in the last 2 000 years with respect to surface temperature averaged over the Belt and Road regions, which is mainly attributed to continuously increasing and accumulating of carbon emissions from human activities. Since the 1980s, over the Belt and Road regions mean climate change is characterized as surface warming at a faster rate, increased precipitation and evaporation, and accelerated sea level rise among others, and extreme weather and climate events such as hot extremes, rainstorms …
Experiences And Enlightenment Of International Cooperation On Climate Change For Bri Partners,
2023
China Institute for WTO Studies, University of International Business and Economics, Beijing 100029, China
Chinese Academy of International Trade and Economic Cooperation, Ministry of Commerce of the People's Republic of China, Beijing 100710, China
Experiences And Enlightenment Of International Cooperation On Climate Change For Bri Partners, Jianping Zhang, Xu Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
The Belt and Road region has different resource endowments and diverse climates. Low-carbon and sustainable economic development is the objective need for the high-quality Green Silk Road, and it is also the key to the global actions and practices on climate change. China and BRI partners have carried out in-depth cooperation on low-carbon infrastructure, cleaner energy, climate disaster warning and forecasting, climate finance, low-carbon technology, and other key development fields in a win-win solution. Further, by drawing on the valuable experiences of developed countries in international cooperation on climate, the others have explored a new path for future international cooperation …
Climate Change Adaptation And Mitigation Strategies For Building A Green Silk Road,
2023
Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
Climate Change Adaptation And Mitigation Strategies For Building A Green Silk Road, Tandong Yao, Jianping Huang, Baiqing Xu, Yanfen Wang, Xi Chen, Junguo Liu, Qingyun Duan, Guangjian Wu, Weicai Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Areas along the Belt and Road face not only natural process-related challenges such as frequent extreme weather events caused by abnormal climate warming, uneven distribution of water resources, but also management-related challenges such as extensive resource management, insufficient protection of ecology and biodiversity, and underutilization of carbon sink potential. To address these challenges and ensure a sustainable future, it is necessary to strengthen scientific and technological cooperation in response to climate change along the Silk Road, and to enhance the quality of the Green Silk Road construction. Key areas of scientific and technological cooperation should focus on water-ecological collaborative management …
Strategies And Measures Of International Climate Cooperation For The Belt And Road Regions,
2023
Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China
School of Public Policy and Management, University of Chinese Academy of Sciences, Beijing 100049, China
Center for Carbon Neutrality Strategy, Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China
Strategies And Measures Of International Climate Cooperation For The Belt And Road Regions, Yi Wang, Xianchun Tan, Jingyong Zhang, Renqiang Li, Minpeng Chen, Baihe Gu, Jianping Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Climate cooperation is conducive to promoting the Belt and Road Initiative (BRI) partner countries and regions to handle the relationship between economic development and tackling climate change, which is critical to achieving the green transformation of the regional economy. Based on the facts and projections of climate change in the BRI region, this study explored the demand gaps in technology, finance, and capacity building in the BRI region based on the impact of climate change on water resources, agriculture, and biodiversity. The study found that most countries and regions along the Belt and Road have a more urgent need for …
Approaches To Assessing Nutrient Coupling In Open Ocean Datasets,
2023
Humboldt State University
Approaches To Assessing Nutrient Coupling In Open Ocean Datasets, James M. Moore, Claire P. Till
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
Nutrient coupling describes a process where the biogeochemical cycles of two elements are linked by being incorporated similarly into biomass. This paper uses data from the GEOTRACES GP16 cruise (Eastern Pacific Zonal Transect) to investigate the relationship between certain macronutrients generally coupled to trace elements in terms of their oceanic distributions with the notable exception of in an oxygen minimum zone: cadmium-phosphate and zinc-silicate. There are many methods applied to oceanographic data to correlate analyte concentrations; while they are often presented independently in literature, here we attempt to use them in conjunction for a more thorough interpretation. By compiling 1) …
2023 September 14 - Tennessee Weekly Drought Summary,
2023
East Tennessee State University
2023 September 14 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
Managing Fires And Ecosystems Indigenous Fire Ecologies Session_Greenhouse Gas Emissions From Wildland Fires Workshop,
2023
Wofford College
Managing Fires And Ecosystems Indigenous Fire Ecologies Session_Greenhouse Gas Emissions From Wildland Fires Workshop, Cynthia Twyford Fowler
Faculty Scholarship
No abstract provided.
2023 September 7 - Tennessee Weekly Drought Summary,
2023
East Tennessee State University
2023 September 7 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
Reaction Steps In Heterogeneous Photocatalytic Oxidation Of
Toluene In Gas Phase—A Review,
2023
Al-Farabi Kazakh National University
Reaction Steps In Heterogeneous Photocatalytic Oxidation Of Toluene In Gas Phase—A Review, Yerzhigit Tulebekov, Zhandos Orazov, Bagdat Satybaldiyev, Daniel D. Snow, Raphaël Schneider, Bolat Uralbekov
Nebraska Water Center: Faculty Publications
A review of the current literature shows there is no clear consensus regarding the reaction mechanisms of air-borne aromatic compounds such as toluene by photocatalytic oxidation. Potential oxidation reactions over TiO2 or TiO2-based catalysts under ultraviolet and visible (UV/VIS) illumination are most commonly considered for removal of these pollutants. Along the pathways from a model pollutant, toluene, to final mineralization products (CO2 and H2O), the formation of several intermediates via specific reactions include parallel oxidation reactions and formation of less-reactive intermediates on the TiO2 surface. The latter may occupy active adsorption sites and …
USAF
Comparison Of A Bottom-Up Gnss Radio Occultation Method To Measure D- And E-Region Electron Densities With Ionosondes And Firi, Dylan J. Shaver, Dong L. Wu, Nimalan Swarnalingam, Anthony L. Franz, Eugene V. Dao, Daniel J. Emmons
Faculty Publications
High-frequency skywave propagation can be heavily impacted by D- and E-region dynamics requiring accurate global measurements to optimize performance. A standard measurement technique is to use ionosondes, but they are unable to measure below 1 MHz and are only available at a limited number of land-locked sites around the globe. In contrast, the Global Navigation Satellite System radio occultation (GNSS-RO) bottom-up method is a new approach specifically designed to generate electron density profiles in the D- and E- region ionosphere. It takes advantage of satellite constellations that currently provide over 20,000 daily measurements and global coverage. In this paper, GNSS-RO …
Climate Stories: South Carolina, Volume 1,
2023
Wofford College
Climate Stories: South Carolina, Volume 1, Kaelyn Emon, Emily Arnold, Samantha Carter, Hayden Jones, Sarah Owens, Noel A. Tufts, Tiana White, Laura Barbas Rhoden, Christine S. Dinkins
Community Based Research
In this volume, you will hear from South Carolina residents about how they have been sensing climate change throughout their lifetimes. All stories have been anonymized with the use of pseudonyms, except where participants asked for their story to be associated with their name.
How Is Flash Drought Understood?—Experts’ Definitions And
Decision-Makers’ Perceptions,
2023
University of Nebraska–Lincoln
How Is Flash Drought Understood?—Experts’ Definitions And Decision-Makers’ Perceptions, Caily Schwartz, Tonya Haigh, Mark D. Svoboda, Madeline Goebel
National Drought Mitigation Center: Faculty Publications
Because flash drought is a relatively new phenomenon in drought research, defining the concept is critical for scientists and decision-makers. Having detrimental impacts on many sectors, it is important to have a consistent definition and understanding of flash drought, between experts and stakeholders, to provide early warning to the community. This study focuses on onset and progression of conditions and demonstrates the difference in flash drought identification for 15 events across six quantitative definitions of flash drought that use the U.S. Drought Monitor (USDM). Five flash drought events have been studied in the literature while 10 additional events have been …
