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Hace 9 horas · 2.2 Solar light reflectance for two-layered snow surfaces 2.2.1 Local optical properties of snow. To model the snow spectral reflectance using the formulas given above, one needs to calculate the values of the probability of photon absorption β, the average cosine of scattering angle g, and the extinction coefficient K e x t as functions of the snow grain diameter d and the wavelength λ.
Hace 1 día · Mercury is the first planet from the Sun and the smallest in the Solar System.In English, it is named after the ancient Roman god Mercurius (), god of commerce and communication, and the messenger of the gods.Mercury is classified as a terrestrial planet, with roughly the same surface gravity as Mars.The surface of Mercury is heavily cratered, as a result of countless impact events that have ...
Hace 9 horas · July 26, 2024 - Fires in Queensland, Australia. On July 17, 2024, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired a dramatic true-color image of multiple fires burning across Cape York Peninsula in Queensland, Australia. Each active fire is marked by a red “hot spot”.
27 de jul. de 2024 · One of the largest biomes on the Earth is sea ice, which covers more than 35 million km 2 of the planet’s surface every year, all year long (or roughly 8% of the world’s oceans) (McQuaid 2023).During the austral winter and spring, sea ice covers an area of around 17–20 million km 3 as it spreads away from the continent into the Southern Ocean.
Hace 9 horas · Larissa (grekiska Λάρῑσα) är en av Neptunus månar . Då rymdsonden Voyager 2 passerade och tog bilder av Neptunus och dess månar 1989 fick man bekräfta existensen av den måne som hade "förmörkat" en stjärna sedan 1981: Denna gång fick den beteckningen S/1989 N 2, men senare har den Internationella astronomiska unionen valt att ...
Hace 3 horas · Jakob Robnik, Adrian E. Bayer, Maria Charisi, Zoltán Haiman, Allison Lin, Uroš Seljak
Hace 9 horas · In December 2022, the United States (US) experienced an extreme cold event. Its duration was 5 days, and it ranked third in intensity (−9.16 °C) during the period from 1979 to 2022. During the Early Stage (12–16 December), the surface air temperature (SAT) anomaly peaked at 2.98 °C. In the Development Stage (17–21 December), cold air moved towards North America (NA).
