Nngreenhouse gases and global warming pdf files

Wallington, jayaraman srinivasan, ole john nielsen, ellie j. Technical working group of the maryland commission on climate change. The following table includes the 100year time horizon global warming potentials gwp relative to. Deforestation is also leading to warmer temperatures. Production and transport of coal, natural gas, and oil emits methane gas to the. Trends in global co2 and total greenhouse gas emissions 2017.

Gases in climate variations and associated impacts villach, austria, 1985. The burning of these fuels produces gases like carbon dioxide, methane and nitrous oxides which lead to global warming. Global greenhouse gas emissions by gas, 19902010 this figure shows worldwide emissions of carbon dioxide, methane, nitrous oxide, and several fluorinated gases from 1990 to 2010. Structured expert dialogue sed final report fcccsb2015inf. Signs of global warming in the united states, region by region iv. Gt co2 eq, calculated using the socalled global warming potentials for 100. Environmental and ecological chemistry greenhouse gases and global warming timothy j. Natural causes atmospheric carbon dioxide carbon dioxide is commonly known as the greenhouse gas.

Carbon dioxide co2 is a greenhouse gas that warms the atmosphere. The reuse policy of european commission documents is regulated by decision 2011833eu oj l 330. A greenhouse gas absorbs infrared radiation when molecules interact with uv radiation the energy they absorb can break bonds. Conference paper pdf available march 2017 with 1,595 reads how we measure reads a read is counted each time someone views a. As early as the 19th century, scientists recognized that greenhouse gases warm the planet, and that increases in atmospheric carbon dioxide could lead to global warming on time scales of decades to centuriesmuch shorter than the fluctuations related to ice ages and interglacials. It is responsible for about half of the atmospheric heat retained by trace gases and also for 50% of the greenhouse effect. An attempt has been taken here to show the effects of global warming, and to take steps to reduce global greenhouse gas emissions. Fighting climate change together european commission. Greenhouse gas emissions, global warming and climate change. Ir radiation is less powerful as the photons contains less energy. The study report on the greenhouse gases and their impact on global warming. In 2016, total global greenhouse gas ghg emissions excluding those from land use. Global warming or climate change refers to longterm fluctuations in temperature, precipitation, wind, and other elements of the earths climate system.

Since preindustrial times, atmospheric co2 concentrations have increased from about. Global warmings increasingly visible impacts environmental. Vicky wong page 1 of 7 the greenhouse effect and global warming the sun produces radiation mainly in the ultraviolet uv, visible vis and infrared ir regions of the electromagnetic spectrum. When these reach the earth, part is reflected back into space and part of it is absorbed by the earths surface. Direct effects occur when the gas itself absorbs radiation.