Climate change: Climate change is simply define as change in global weather condition such as temperature, pressure etc. Climate change is a change in statistical distribution of weather pattern over time ranging from decades to millions of years. It may be change in weather conditions or distribution of weather around the average condition.
Climate change is caused by factors such as oceanic process (e.g. oceanic circulation) , biotic processes , variation in solar radiation , volcanic eruption , plate tectonic and human activities. Scientists actively work to understand past and future climate by using observation models and theoretical models. Floral and faunal record, glacial and periglacial process, stable isotope and other sediment analyses and sea level record serve to provide climate records that span the geologic award. Causes On the broadest scale, the rate at which energy is received by the sun and energy release to space determines the equilibrium temperature and climate of the Earth.
Factors that can change the climate are called climate forcing or forcing mechanism. These include the process such as variation solar radiation, variation in mountain building and continental drift & change in concentration of green house gases. Forcing mechanisms can be either internal or external. Internal forcing mechanisms are natural processes within the climate system itself. External forcing mechanisms can be either natural (e.g. changes in solar output) or anthropogenic (e.g. increased emissions of greenhouse gases).
Whether the initial forcing mechanism is internal or external, the response of the climate system might be fast, slow or a combination. Therefore, the climate system can respond abruptly, but