Ritesh Patro

University of Oulu · Water, Energy and Environmental Engineering

Abstract Study region Oulujoki River basin- Inland sub-Arctic. Study focus Understanding the impact of projected accelerated warming and increasing precipitation in the Arctic and sub-Arctic is crucial. This study examines how these changes will reshape the hydroclimatic dynamics of the inland sub-Arctic river basin, using cold climate and precipit...

The change in the global energy production mix towards variable renewable energy sources requires efficient utilization of regulated rivers to optimise hydropower operations meet the needs of a changing energy market. However, the flexible operation of hydropower plants causes non-natural, sub-daily fluctuating flows in the receiving water bodies,...

In recent years, the effects of human activities and climate change on river flow patterns have become a major concern worldwide. This is particularly true in the southern Caspian Sea (SCS) region of Iran, where increasing water-intensive socio-economic development and climate change have significantly altered river flow regimes. To better understa...

Arctic rivers and water resources currently experience significant hydrological changes due to climate change and global warming. The flow regime alteration in Arctic rivers strongly influences the conservation and sustainability of the native biodiversity of the riverine ecosystem. The change in major characteristics of the daily and monthly flow...

Soil erosion is both a major driver and consequence of land degradation with significant on-site and off-site costs which are critical to understand and quantify. One major cost of soil erosion originates from the sediments delivered to aquatic systems (e.g., rivers, lakes, and seas), which may generate a broad array of environmental and economic i...

The transportation sector is going through a rapid transition to electric vehicles to minimize our reliance on fossil fuels and reduce CO 2 emissions. This is also happening in the cargo transport sector, with a rapid deployment of electric trucks. This paper proposes that the replacement of diesel trucks with electric trucks should first happen on...

Study region: A network of 25 rain gauges roughly covering an area of 517.2 km2 of Warsaw, in Poland. Study focus: Scaling and intermittency of data series of rainfall intensity are investigated for each of the network rain gauges using five multifractal framework methods: spectral density analysis, functional box-counting, trace moment, probabilit...

Inappropriate food conservation practices along with insufficient and inefficient storage systems are often responsible for the deterioration in food quality of agricultural products leading to food insecurity and economic loss. Open sun drying is a well-known traditional food preservation technique but is limited in use due to its low efficiency a...

There is a significant energy transition in progress globally. This is mainly driven by the insertion of variable sources of energy, such as wind and solar power. To guarantee that the supply of energy meets its demand, energy storage technologies will play an important role in integrating these intermittent energy sources. Daily energy storage can...

The transportation sector is going through a rapid transition to electric vehicles to minimize our reliance on fossil fuels and reduce CO2 emissions. This is also happening in the cargo transport sector, with a rapid deployment of electric trucks. This paper proposes that the replacement of diesel trucks with electric trucks should first happen on...

Himalayan areas are the water bucket of the world and contribute one of the world’s greatest freshwater resources. The Himalayan system provides plentiful services to the downstream towns and population in terms of water for household purposes and ecosystems services, etc. More than 1.4 billion people directly depend on water from the rivers of the...

Demographic and geographic locations of various towns in the study area having proximity to the river like Alaknanda along with its tributaries Mandakini and Pindar make them suitable target locations to get the complications of water shortages. The rivers are malevolent when it comes to supply of water in balance in the times of crucial need as th...

The Himalayan areas face frequent occurrence of water scarcity. There is a need for an assessment of water resources of the region. To meet the population’s water needs, existing water resources and new potential water bearing zones must be investigated. Due to high seasonal variability in river flows and very high sediment transport and monsoonal...

Low-carbon energy transitions taking place worldwide are primarily driven by the integration of renewable energy sources such as wind and solar power. These variable renewable energy (VRE) sources require energy storage options to match energy demand reliably at different time scales. This article suggests using a gravitational-based energy storage...

The assessment of the hydrological safety of dams is a key and urgent issue in Italy, where about the 8% of the large dams were built more than one century ago. This percentage will increase to 23% in a decade. In the literature, it has been shown that the determination of critical flood events should consider the statistical dependence between flo...

River flow in cold climates is known to be one of the hydrological systems most affected by climate change, playing a central role in the sustainability of downstream socio-ecological systems. Numerous studies on the temporal and spatial variations of streamflow characteristics have been done, and a comprehensive study on the variation of hydrologi...

Energy harnessing from renewable energy sources has become more flexible with power electronic technologies. Recent advancements in power electronic technologies achieve converter efficiency higher than 98%. Today, reliable power electronic devices are needed to design a PV-based energy converter (inverter) to reduce the risk of failure and mainten...

Sedimentation has a prominent impact on the functionality and lifetime of reservoirs and is a growing concern for stakeholders. Various parameters influence sedimentation caused by soil erosion. Here we have examined fifty Italian reservoirs to determine sedimentation rates and storage capacity loss. The reservoirs studied have an average age of 78...

A significant energy transition is taking place worldwide, driven by the expanding capacity of renewable energy sources like wind and solar energy. Due to their inherent variability, these renewable energy sources must have accessible energy storage options. This article suggests using a gravitational-based energy storage method consisting of sand,...

As the values and power relations in the world change, so do the desires regarding water use and recreation. The general appreciation and debate emphasize the importance of rivers and their role in ecosystem functions. Dismantling of dams is seen as one way to restore the diversity of watercourses and, in particular, the natural life cycle of migra...

This paper presents a detailed review and discussion on the long-range forecast (LRF) of Indian summer monsoon rainfall (ISMR), its present status, problems, and perspectives with an emphasis on the Indian meteorological department (IMD) operational forecasting methods and its forecasts. Verifications of IMD LRF for 1924-1987 revealed a success rat...

Contrary to conventional fossil fuel-based electricity generation technologies, renewable energy centered technologies, specifically small hydropower, release a lesser amount of anthropogenic greenhouse gases but are normally more expensive. A major segment of the capital investment in the current small hydropower scenario accounts for equipment an...

About 50% of all hydropower plants (HPPs) worldwide were originally commissioned more than 40 years ago, so that the advanced age of the fleet is a major concern across all continents, and especially in Europe. The modernization of HPPs can generate several benefits in terms of generation, flexibility, safety, operation, and may have neutral or eve...

Reservoir sedimentation has a prominent impact on the hydropower performance in the future and is a growing concern for hydropower stakeholders. Sedimentation caused by soil erosion is influenced by various parameters. Reservoir sedimentation is one of the most challenging problems that affect hydroelectric production since it overall causes a redu...

In terms of fuel resource, hydropower possesses a prominent advantage over any other large power plants which burn fossil fuels to generate electricity. Moreover, due to the abundance in resource availability (as a domestic source in small streams and rivers), small hydropower (SHP) plants are showing prominence all over the world. SHP plants have...

Increasing temperature, reducing ice and intensifying cyclones are the most common symptoms of climate change. Increasing CO2 concentration in the environment is very dangerous for mankind. So, it is very essential to decrease or minimize the CO2 concentration. To combat this situation, biotechnology offers the best solution to decrease greenhouse...

Climate change has repercussions on the management of water resources. Particularly, changes in precipitation and temperature impact hydropower generation and revenue by affecting seasonal electricity prices and streamflow. This issue exemplifies the impact of climate change on the water-energy-nexus, which has raised serious concern. This paper in...

We assess the impacts of nine climate-change scenarios on the hydrological regime and on hydropower production of forty-two glacierized basins across the Italian Alps, assumed exemplary of similar systems in other glacierized contexts. Each of these basins includes one (or more) hydropower plant, here treated as a run-of-the-river system. We implem...

Hydropower represents an interesting technology: affordable, renewable, and flexible. However, it must cope with climate changes and new energy policies that jeopardize its future. A smooth transition to sustainability requires decision makers to assess the future perspectives of hydropower: about its future revenue and related uncertainty. This in...

Hydropower development on gravity-based drinking water supply pipelines in India has not been widely practiced, even at the micro-hydropower (MHP) scale. Site visits including measurements of pipeline flow and pressure were conducted at 12 schemes in Uttarakhand, and 3 were chosen for detailed analysis. Due to a complete lack of existing pressure c...

The present work sets the objective of assessing the effects of climate change on the hydrological regime of glacierized river basins and how this could impact the production of hydroelectricity. The study was conducted by examining 42 basins, distributed homogeneously across the Italian Alpine regions. Each of these basins includes one (or more) h...

Hydropower development on gravity based drinking water supply schemes, under favorable geographical conditions is a recognized principle. The existing infrastructure of gravity based drinking water supply network in hilly areas provides possibilities for harvesting small scale hydro energy which may supplement the electricity and provide reliable e...