Irradiance
View article: Summer and autumn photosynthetic activity in High Arctic biological soil crusts and their winter recovery
Summer and autumn photosynthetic activity in High Arctic biological soil crusts and their winter recovery Open
Introduction Biological soil crusts, found in arid and semi-arid areas worldwide, play a crucial role in the carbon cycle. This study analyzed biocrusts from three different altitudes in Svalbard (High Arctic) in 2022–2024. Methods and res…
View article: Cloud‐Top Entrainment Instability in Marine Stratocumulus Clouds: Observational Evidence From Collocated Microphysical, Turbulence, and Radiation Measurements
Cloud‐Top Entrainment Instability in Marine Stratocumulus Clouds: Observational Evidence From Collocated Microphysical, Turbulence, and Radiation Measurements Open
Marine stratocumulus clouds (MSC) strongly influence Earth's radiation budget, yet the mechanisms governing the descent of entrainment‐affected (diluted) parcels, and the relative roles of cloud‐top entrainment instability (CTEI) and longw…
View article: Experimental analysis of elevated temperature and soiling loss on the rooftop PV modules performance under composite climatic conditions
Experimental analysis of elevated temperature and soiling loss on the rooftop PV modules performance under composite climatic conditions Open
On-field performance of a solar PV plant completely relies on solar radiation intensity and its availability. During operation, the output of a solar PV module varies from its rated capacity due to weather parameters such as ambient temper…
View article: Photovoltaic energy conversion models with clustering-based classification of days from irradiance data
Photovoltaic energy conversion models with clustering-based classification of days from irradiance data Open
View article: Exploring the photovoltaic potential of CsSbCl4 Dion Jacobson Perovskites through first-principle calculations and SCAPS simulations
Exploring the photovoltaic potential of CsSbCl4 Dion Jacobson Perovskites through first-principle calculations and SCAPS simulations Open
This work presents a comprehensive computational investigation of lead (Pb)-free CsSbCl 4 Dion–Jacobson (DJ)-based perovskite solar cells (PSCs), combining density functional theory (DFT) and Solar Cell Capacitance Simulator (SCAPS 1-D) de…
View article: Identifying reliable visible-spectrum reflectance metrics for monitoring cucumber leaf development
Identifying reliable visible-spectrum reflectance metrics for monitoring cucumber leaf development Open
Accurate and continuous monitoring of plant development is crucial for managing closed cultivation systems effectively. Optical reflectance-based sensors offer a non-destructive, scalable, and cost-efficient method to track plant growth, p…
View article: High-Resolution Flux Measurement for High-Flux Solar Simulators
High-Resolution Flux Measurement for High-Flux Solar Simulators Open
Concentrated solar power (CSP) systems impose high demands on individual components such as receivers, optical elements, etc. due to high solar flux. Characterisation of these components often requires measurements under defined, constant …
View article: Performance Evaluation of Grid-Connected Photovoltaic System Under Climatic Conditions of Isthmus of Tehuantepec
Performance Evaluation of Grid-Connected Photovoltaic System Under Climatic Conditions of Isthmus of Tehuantepec Open
This article assesses the use of solar photovoltaic radiation as a renewable resource for a region of the Isthmus of Tehuantepec in Mexico, where a 163.2 kW grid-connected photovoltaic system is located. The study aims to understand the sy…
View article: Hydrogeochemical and isotopic observations in the Baltic Sea system
Hydrogeochemical and isotopic observations in the Baltic Sea system Open
Data products are organized into the following files: Ferrybox surface water survey (1-minute resolution): 1_Cruise_Ferrybox_1min.csv Meteorological survey (2-minute resolution): 2_Cruise_meteo_2min.csv <…
View article: NESP TWQ Project 2.3.1 - Benthic light as ecologically validated GBR wide indicator for water quality: drivers, thresholds and cumulative risks, 2016-2018 (AIMS)
NESP TWQ Project 2.3.1 - Benthic light as ecologically validated GBR wide indicator for water quality: drivers, thresholds and cumulative risks, 2016-2018 (AIMS) Open
The project will develop a water quality indicator based on benthic irradiance (the amount of light penetrating to the seafloor). Using experiments and field data we will develop irradiance thresholds for measures of ecosystem health, and …
View article: Performance Evaluation of PV Solar Energy Systems using Mono and Polycrystalline Metal Structures,- Geographic Region Climate Model
Performance Evaluation of PV Solar Energy Systems using Mono and Polycrystalline Metal Structures,- Geographic Region Climate Model Open
This paper presents a comparison study between two different PV system technologies. The first PV system is based on single crystalline silicon (Hemo 06) and (with 12 bus bars). The second system is based on multi-crystalline silicon, whic…
View article: Adaptive Gradient Descent MPPT Algorithm With Complexity-Aware Benchmarking for Low-Power PV Systems
Adaptive Gradient Descent MPPT Algorithm With Complexity-Aware Benchmarking for Low-Power PV Systems Open
This paper proposes a computationally efficient, real-time maximum power point tracking (MPPT) algorithm tailored for low-power photovoltaic (PV) systems operating under fast-changing irradiance and partial shading conditions (PSC). The pr…
View article: NESP TWQ Project 5.3 - Benthic light as ecologically-validated GBR-wide indicator for water quality: Drivers, thresholds and cumulative risks, 2019-2020 (AIMS)
NESP TWQ Project 5.3 - Benthic light as ecologically-validated GBR-wide indicator for water quality: Drivers, thresholds and cumulative risks, 2019-2020 (AIMS) Open
The project is developed a water quality indicator based on benthic PAR (light penetrating to the seafloor). The project experimentally estimated irradiance thresholds for ecosystem health for the Great Barrier Reef and developed a new rem…
View article: Fast freeform optics design for high-contrast irradiance tailoring using optics-heuristic auction algorithm and rejection sampling
Fast freeform optics design for high-contrast irradiance tailoring using optics-heuristic auction algorithm and rejection sampling Open
View article: Community‐driven variations in snow algae color modulate snow albedo reduction
Community‐driven variations in snow algae color modulate snow albedo reduction Open
Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of sn…
View article: Unexpected quasi-independence of colored dissolved organic matter absorption from chlorophyll-a concentration in the Southern Ocean
Unexpected quasi-independence of colored dissolved organic matter absorption from chlorophyll-a concentration in the Southern Ocean Open
The absorption coefficient of colored dissolved organic matter (CDOM), ay, plays a critical role in driving ocean optical properties and so light attenuation and light-dependent biogeochemical cycles. In the Southern Ocean (SO), however, a…
View article: Tethered balloon-borne measurements to characterise the evolution of the Arctic atmospheric boundary layer at Station Nord
Tethered balloon-borne measurements to characterise the evolution of the Arctic atmospheric boundary layer at Station Nord Open
We present a comprehensive balloon-borne measurement dataset collected during a dedicated Arctic observation campaign conducted from 19 March to 18 April 2024 in the transition from polar night to polar day at the Villum Research Station (…
View article: FlareSat: A Benchmark Landsat 8 Dataset for Gas Flaring Segmentation in Oil and Gas Facilities
FlareSat: A Benchmark Landsat 8 Dataset for Gas Flaring Segmentation in Oil and Gas Facilities Open
Gas flaring in oil and gas facilities prevents pressure buildup and ensures safety, but large-scale flaring emits significant greenhouse gases and contributes to climate change. Detecting and monitoring gas flaring are crucial for mitigati…
View article: Historical Reconstruction of Solar Surface Magnetism from Cycle 1-24 Using the Synthetic Active Region Generator (SARG) and the Advective Flux Transport (AFT) Model
Historical Reconstruction of Solar Surface Magnetism from Cycle 1-24 Using the Synthetic Active Region Generator (SARG) and the Advective Flux Transport (AFT) Model Open
The historical reconstruction of the Sun's surface magnetic field remains a persistent challenge, limiting our ability to investigate the long-term global properties of the Sun, including the evolution of the large-scale magnetic field, so…
View article: Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato
Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato Open
Introduction Recurrent drought threatens Mediterranean tomato yields, yet how the time-scale of drought shapes photochemical tolerance remains unclear. Methods We evaluated six genotypes, three commercial cultivars (‘Sintonía’, ‘Marejada’,…
View article: How flat is flat? Investigating snow topography and the spatial variability of snow surface temperature on landfast sea ice using UAVs in McMurdo Sound, Antarctica
How flat is flat? Investigating snow topography and the spatial variability of snow surface temperature on landfast sea ice using UAVs in McMurdo Sound, Antarctica Open
How do snow distribution patterns influence the surface temperature of snow on sea ice? Despite its crucial role in the sea-ice energy balance, snow on Antarctic sea ice remains under-sampled and poorly understood. In our study, we combine…
View article: Historical Reconstruction of Solar Surface Magnetism from Cycle 1-24 Using the Synthetic Active Region Generator (SARG) and the Advective Flux Transport (AFT) Model
Historical Reconstruction of Solar Surface Magnetism from Cycle 1-24 Using the Synthetic Active Region Generator (SARG) and the Advective Flux Transport (AFT) Model Open
The historical reconstruction of the Sun's surface magnetic field remains a persistent challenge, limiting our ability to investigate the long-term global properties of the Sun, including the evolution of the large-scale magnetic field, so…
View article: Centennial solar EUV irradiance from ionospheric currents: Varying sunspot-EUV irradiance relation and modified spot-facula ratio
Centennial solar EUV irradiance from ionospheric currents: Varying sunspot-EUV irradiance relation and modified spot-facula ratio Open
Sunspots depict large variability during the last 100 years, a period called the Modern Maximum (MM). However, other variables are needed to study the long-term evolution, e.g., of weaker fields and different radiative emissions. Recently,…
View article: Solar-Powered Interfacial Evaporation for Simultaneous Photocatalytic Hydrogen Production and Salinity Gradient Power Generation
Solar-Powered Interfacial Evaporation for Simultaneous Photocatalytic Hydrogen Production and Salinity Gradient Power Generation Open
Solar-driven interfacial evaporation desalination technology offers a feasible solution to the global shortage of freshwater resources. However, previous interfacial evaporation technologies have often only focused on the production of fre…
View article: Photovoltaic Power and Meteorological Datasets With Snow Detection From the Outdoor Solar Power Laboratories of the Finnish Meteorological Institute
Photovoltaic Power and Meteorological Datasets With Snow Detection From the Outdoor Solar Power Laboratories of the Finnish Meteorological Institute Open
High‐quality, long‐term time series of photovoltaic (PV) output measurements are scarce at high latitudes, limiting both academic research and commercial applications. Here, we describe and publish high‐resolution (1 min) PV output data—to…
View article: Enhanced adaptive control techniques for extracting maximum power from photovoltaic system
Enhanced adaptive control techniques for extracting maximum power from photovoltaic system Open
Photovoltaic (PV) systems experience performance fluctuations due to changes in irradiance and temperature, which makes maximum power point tracking (MPPT) essential for stable grid integration. This paper investigates four adaptive MPPT c…
View article: Frequency control of hybrid power system with fractional order secondary controller using improved biogeography-based krill herd algorithm
Frequency control of hybrid power system with fractional order secondary controller using improved biogeography-based krill herd algorithm Open
To meet the demand of electrical power, structural changes of the power system from the generation side are necessary by integrating the renewable sources into the existing system. In the presence of renewables, the active power imba…
View article: Modelling Solar Intermittency Effects on PEM Electrolyser Performance & Degradation: A Comparison of Oman and UK
Modelling Solar Intermittency Effects on PEM Electrolyser Performance & Degradation: A Comparison of Oman and UK Open
The durability of Proton Exchange Membrane Water Electrolysers (PEMWEs) under intermittent renewable power is a critical challenge for scaling green hydrogen. This study investigates the influence of solar intermittency on PEMWE performanc…
View article: The “Irradiance Effect” Plays a Crucial Role in the Photosensitization of Escherichia coli by Blue Light
The “Irradiance Effect” Plays a Crucial Role in the Photosensitization of Escherichia coli by Blue Light Open
Antimicrobial Blue Light (aBL) can be used to control the growth of pathogens in several applicative fields, from sanitization of inert surfaces to human skin treatment and from industry to food. Though the mechanism of action is still unk…
View article: Real-Time Solar Irradiance Monitoring: An FPGA-Based Approach for Data Visualization
Real-Time Solar Irradiance Monitoring: An FPGA-Based Approach for Data Visualization Open
Measuring solar irradiance helps maximize efficiency in photovoltaic power plants. Devices for detecting solar irradiance, such as pyranometers, are difficult to calibrate and extremely expensive. Given these limitations, they are rarely u…