Business

Austrian Airlines to resume flights on June 15

Austrian Airlines said Thursday that it would resume flights from June 15 after almost three months of being grounded due to the new coronavirus pandemic, which has heavily restricted international travel.

Machine learning & AI

Using machine learning to estimate COVID-19's seasonal cycle

One of the many unanswered scientific questions about COVID-19 is whether it is seasonal like the flu—waning in warm summer months then resurging in the fall and winter. Now scientists at Lawrence Berkeley National Laboratory ...

Energy & Green Tech

Solar, wind energy struggle as coronavirus takes toll

The U.S. renewable energy industry is reeling from the new coronavirus pandemic, which has delayed construction, put thousands of skilled laborers out of work and sowed doubts about solar and wind projects on the drawing ...

Engineering

The future of cities in the face of twin crises

Before January this year, many people around the world had never heard of Wuhan. Today, this Chinese megacity—population 11 million—has achieved notoriety as the birthplace of a pandemic.

Energy & Green Tech

Uncertain climate future could disrupt energy systems

Extreme weather events—such as severe drought, storms, and heat waves—have been forecast to become more commonplace and are already starting to occur. What has been less studied is the impact on energy systems and how ...

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Climate

Climate encompasses the statistics of temperature, humidity, atmospheric pressure, wind, rainfall, atmospheric particle count and numerous other meteorological elements in a given region over long periods of time. Climate can be contrasted to weather, which is the present condition of these same elements over periods up to two weeks.

The climate of a location is affected by its latitude, terrain, altitude, ice or snow cover, as well as nearby water bodies and their currents. Climates can be classified according to the average and typical ranges of different variables, most commonly temperature and rainfall. The most commonly used classification scheme is the one originally developed by Wladimir Köppen. The Thornthwaite system, in use since 1948, incorporates evapotranspiration in addition to temperature and precipitation information and is used in studying animal species diversity and potential impacts of climate changes. The Bergeron and Spatial Synoptic Classification systems focus on the origin of air masses defining the climate for certain areas.

Paleoclimatology is the study and description of ancient climates. Since direct observations of climate are not available before the 19th century, paleoclimates are inferred from proxy variables that include non-biotic evidence such as sediments found in lake beds and ice cores, and biotic evidence such as tree rings and coral. Climate models are mathematical models of past, present and future climates.

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