The essay theme for this year is: Click here to download the essay contest entry form.
How do the sun and solar cycles affect climate change and global warming? What's the Earth in 40 years essay between climate and weather? Weather is what's happening in the atmosphere, on any given day, in a specific place.
Local or regional weather forcasts indlude temperature, humidity, winds, cloudiness, and prospects for storms or other changes over the next few days. Climate is the average of these weather ingredients over many years.
For example, it might be raining in Riverside today, but we have a dry, hot climate because on average, it only rains a few days of the year. Weather can day to day but climate changes slowly, over decades or centuries.
What is the greenhouse effect? This refers to the retention of the sun's warmth in the Earth's lower atmosphere by greenhouse gases. These gases primarily carbon dioxide, methane and nitrous oxide act as a thermal blanket for the planet, warming the surface to a life-supporting average of 59 degrees Fahrenheit 15 degrees Celcius.
The recent rapid increase in greenhouse gases has resulted in a thickening of the atmosphere. The thicker atmosphere traps more solar radiation and in turn, raises the global temperature.
How much has global temperature risen in the last years? This graph from NOAA shows the annual trend in average global air temperature in degrees Celsius, through For each year, the range of uncertainty is indicated by the vertical bars.
The blue line tracks the changes in the trend over time. Click here or on the image to enlarge. Averaged over all land and ocean surfaces, temperatures have warmed roughly 1. More than half of this warming—about 0.
Because oceans tend to warm and cool more slowly than land areas, continents have warmed the most about 1. The year was the warmest on record for the contiguous United States, followed closely by andaccording to the National Climatic Data Center.
Inthe U. It was the first time since that the nation has been close to its year average temperature though was still slightly above that norm.
The United States was actually one of the least-warm spots on Earth in when compared to local averages. The globe as a whole had its coolest year sincebut the global average for was still warmer than any year from toaccording to NCDC. Each group calculates global temperature year by year, using slightly different techniques.
However, analyses from all three groups point to the decade between and as the hottest since If climate changes naturally over time, why isn't the current warming just another natural cycle?It was explained to Tom that it is only within recent times (i.e.
the last 40 years) that we have had access to photographic evidence from space about Earth being spherical. Tom was asked why people at an earlier time thought that the Earth was flat. In , a group of scientists conducted a nice study in which it was found that million years ago when the earth was literally ruled by dinosaurs, a massive amount of methane was released into the atmosphere because of the digestive process of the dinosaurs, leading to a significant greenhouse effect, which in turn led to a warm climate.
It is now a fact that the world is getting hotter and Earth is the hottest it has been in at least years, and possibly even the last 2, years.
Studies show that the global surface temperature has increased by approximately ï¿½C over the last century. The Earth’s largest phylum is Arthropoda, including centipedes, millipedes, crustaceans, and insects.
The insects have - Answered by a verified Writer. Teacher/Tutor 40+ years experience.
Specialist in Language and Writing. M.
Kennedy. Doctoral Degree. satisfied customers. Visible beyond a vineyard in Napa County is one of at least a dozen fires that ravaged Northern California in October The area had been plagued by years of extreme heat and drought.
How did we lose the universe? When, last month, NASA announced the discovery of seven new Earth-like exoplanets orbiting TRAPPIST-1, a dwarf star only 40 light years from us, it felt strange: not.