Abstract: A method and an apparatus for assessing status of wind turbines, and a storage medium are provided. The method includes: constructing a wake surrogate model; arranging wind turbines in a wind turbine array in a direction of a wind speed; inputting the wind condition information and the wind turbine information of the first wind turbine of the wind turbines into the wake surrogate model to obtain a velocity deficit percentage and an additional turbulence intensity value at each point in a wake region of the first wind turbine; for each current wind turbine of the wind turbines starting from a second wind turbine of the wind turbines, updating wind condition information of a current wind turbine; and obtaining, for each wind turbine of the wind turbines, an amount of generated power and a load of the wind turbine.

Abstract: The systems and methods described herein relate to the measurement of nitrate levels in a sample of gas, for example, air, exhaust, or other sources of gas. Moreover, the systems and methods described herein are capable of operating using short sample collection periods, permitting rapid data collection and finely time-resolved nitrate monitoring over a span of time. Additionally, ambient nitrate can effectively be distinguished from other airborne particles, such as sulfate and carbon.

Abstract: The systems and methods described herein relate to the measurement of nitrate levels in a sample of gas, for example, air, exhaust, or other sources of gas. Moreover, the systems and methods described herein are capable of operating using short sample collection periods, permitting rapid data collection and finely time-resolved nitrate monitoring over a span of time. Additionally, ambient nitrate can effectively be distinguished from other airborne particles, such as sulfate and carbon.

Abstract: The present disclosure is directed to embodiments of systems for measuring nitrate levels. The systems disclosed herein may include a sample inlet to permit introduction of a gas sample from which nitrate levels may be measured and a filter downstream from the sample inlet to trap particles. A first heating zone to volatilize the trapped particles may be coupled to the filter. Situated between the filter and the sample inlet may be a gas inlet to provide a secondary stream of gas to be passed over the trapped particles to minimize oxidation of low nitrogen containing compounds during heating. Downstream from the filter may be a second heating zone to heat a pathway adjacent to the filter to minimize particles depositing on internal surfaces of the pathway, and downstream from the second heating zone may be an analyzer to measure nitrate levels of the gas sample downstream from the filter. Also disclosed herein are methods for measuring nitrate levels.

Abstract: The systems and methods described herein relate to the measurement of nitrate levels in a sample of gas, for example, air, exhaust, or other sources of gas. Moreover, the systems and methods described herein are capable of operating using short sample collection periods, permitting rapid data collection and finely time-resolved nitrate monitoring over a span of time. Additionally, ambient nitrate can effectively be distinguished from other airborne particles, such as sulfate and carbon.

Abstract: The systems and methods described herein relate to the measurement of nitrate levels in a sample of gas, for example, air, exhaust, or other sources of gas. Moreover, the systems and methods described herein are capable of operating using short sample collection periods, permitting rapid data collection and finely time-resolved nitrate monitoring over a span of time. Additionally, ambient nitrate can effectively be distinguished from other airborne particles, such as sulfate and carbon.