Layers of ice accumulate over seasons and years, creating a record of the climate conditions at the time of formation, including snow accumulation, local temperature, the chemical composition of the atmosphere including greenhouse gas concentrations, volcanic activity, and solar activity.
By drilling down into the ice sheet or glacier and recovering ice from ancient times, scientists are able to determine the past composition and behavior of the atmosphere, what the climate was like when the snow fell, and how the size of ice sheets and glaciers have changed in the past in response to different climate conditions.Ice cores have provided climate and ice dynamics information over many hundred thousand years in very high, sometimes seasonal, resolution.Glaciers form as layers of snow accumulate on top of each other.Each layer of snow is different in chemistry and texture, summer snow differing from winter snow.Anyone can download ATN/AIR-P Introduction to Behavioral Health Treatments for free here.
"These materials are the product of on-going activities of the Autism Speaks Autism Treatment Network, a funded program of Autism Speaks.
Behavioral challenges are a common problem for children with an autism spectrum disorder (ASD).
Many children with ASD have challenges managing certain behaviors such as aggression or not following directions in addition to experiencing limitations in communication or social skills.
This tool kit is designed to provide parents of children with ASD with an overview of in-home strategies as well as tips to teach and increase desirable behaviors and decrease behavior problems.
This tool kit also provides caregivers with an overview of professional behavioral treatments that families can seek out from qualified professionals.
Changes in any of these factors can cause local, regional, or even global changes in the climate. Weather is the current atmospheric conditions, including temperature, rainfall, wind, and humidity at a given place.