Albedo reflectance and bi-hemispherical reflectance (e.g.,). These calculations are based on the bidirectional reflectance distribution function (BRDF), which describes how the reflectance of a given surface depends on the view angle of the observer and the solar angle. BDRF can facilitate translations of observations of reflectance into albedo. Earth's average surface temperature due to its albedo and the greenhouse effect is currently about 15 °C. If Earth were frozen entirely (and hence be more reflective), the average temperature of the planet would drop below −40 °C. If only the continental land masses became covered by glaciers, the mean temperature of the
So Beautiful or So What Simon. At the end of 2011, "So Beautiful or So What" appeared on several top-ten lists curated by music publications. "Rolling Stone" named it the year's 3rd best record, while "Mojo" ranked it 15th. It was voted the 14th best album of the year in "The Village Voice"s Pazz & Jop, an annual poll of American critics nationwide. Christgau, the poll's creator, ranked it 3rd on his year-end list for "The Barnes & Noble Review". Years later, he said "So Beautiful or So What" and Simon's 2016 album "Stranger to Stranger" had remained the singer's "21st century prizes". All songs