![]() NASA World Wind is provided under a freeware license on Windows from mapping with no restrictions on usage. ZoomIt includes additional areas of high resolution imagery, such as New Zealand.Venus and Mars: Our inner and outer neighbours in solar system.USGS: United States Geological Survey data. ![]() SDSS: Nothing less than the universe - the sky with stars and galaxies.Moon: Usually the brightest object in the night sky.Landsat: Collection of images from 1999-2003 at an impressive 15 m per pixel resolution.Jupiter: The king of solar system planets.There have already been a number of add-ons created, from Norway's Prehistoric Hillforts to additional planets, for more information on using add-ons see the Add-on Launchpad. World Wind can also be expanded to include additional imagery and data. You can see country borders, and in some cases intracountry borders such as US states. Unlike your desk globe World Wind can display thousands of placenames all over the world, from country capitals to villages in sparsely populated regions. Look across the Andes, into the Grand Canyon, over the Alps or along the African Sahara. World Wind uses satellite imagery and elevation data to allow users to experience Earth terrain in visually rich 3D, just as if they were really there. World Wind allows any user to zoom from outer space into any place on Earth. ![]() Insights into where and when fire is actively employed as a land management tool enhance our understanding of the role of fire in the Earth system, and highlight the need to better understand how fire practices may change in the future.NASA's technology developed as a similar concept to Google EarthĪt its simplest you can think of World Wind as a desk globe, however World Wind is not a simple desk globe. Main conclusions: We identified a bimodal seasonality pattern, previously unreported at the global scale, and show that it reveals an anthropogenic fingerprint on fire regimes. Results reveal that through these land-use and management practices humans have a strong influence on global patterns of fire seasonality. ![]() In these bimodal areas, population density and the fraction of fires occurring in actively managed land, especially in croplands and pastures, are significantly higher than in neighbouring unimodal areas. Results: About 25% of the global land surface with relevant fire activity has two significantly distinct fire seasons per year, with at least one of these seasons occurring under sub-optimal fire weather conditions. The main environmental correlates controlling global fire regimes were then analysed over bimodal and unimodal areas using the Kolmogorov–Smirnov test. Methods: The modality of fire seasonality at the global scale was classified using a 10-year record of satellite-derived fire activity and model fitting of circular statistical distributions. Location: All areas of the globe exhibiting relevant fire activity, at 0.5 spatial resolution. Our goals were to identify the extent of fire regimes exhibiting two annual fire seasons and to investigate the environmental correlates of such regimes at the global scale. Aim: While fire is recognized as an integral part of the Earth system, the ability of humans to shape fire regimes both spatially and temporally remains poorly understood.
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