70 research outputs found

    Verification test for three WindCube<sup>TM</sup> WLS7 LiDARs at the Høvsøre test site

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    Analysis of vertical wind direction and speed gradients for data from the met. mast at Høvsøre

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    Can we save the beast by conserving the beauty?

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    Because having a wide variety of species on earth is essential for human health and our economy, conservation areas have been established worldwide. These conservation efforts mostly focus on “beauties,” such as pandas or tigers. Many other species are not as charismatic and thus merely considered “beasts.” Many “beasts” live invisible lives in the soil but are extremely important for mankind. We asked whether current conservation efforts based on saving the “beauties” can help to automatically protect the “beasts.” In other words, is there high biological diversity in the soil at locations with high aboveground biodiversity? We mapped aboveground and belowground biodiversity across the world and found that there are many areaswhere aboveground biodiversity is high and belowground biodiversity is low, or the other way around. Our results suggest that conserving the “beauties” may not be enough to protect the “beasts.” We need to consider life belowground when planning new conservation areas

    Flow distortion on boom mounted cup anemometers

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    IEA Wind Task 32: Wind lidar identifying and mitigating barriers to the adoption of wind lidar

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    IEA Wind Task 32 exists to identify and mitigate barriers to the adoption of lidar for wind energy applications. It leverages ongoing international research and development activities in academia and industry to investigate site assessment, power performance testing, controls and loads, and complex flows. Since its initiation in 2011, Task 32 has been responsible for several recommended practices and expert reports that have contributed to the adoption of ground-based, nacelle-based, and floating lidar by the wind industry. Future challenges include the development of lidar uncertainty models, best practices for data management, and developing community-based tools for data analysis, planning of lidar measurements and lidar configuration. This paper describes the barriers that Task 32 identified to the deployment of wind lidar in each of these application areas, and the steps that have been taken to confirm or mitigate the barriers. Task 32 will continue to be a meeting point for the international wind lidar community until at least 2020 and welcomes old and new participants
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