Atmospheric sciences and radiant energy. In contrast to meteorology, which studies short term weather systems lasting up to a few weeks, climatology studies the frequency and trends of those systems. It studies the periodicity of weather events over years to millennia, as well as changes in long-term average weather patterns, in relation to atmospheric conditions. Climatologists, those who practice climatology, study both the nature of climates – local, regional or global – and the natural or human-induced factors that cause climates to change. Climatology considers the past and can help predict future climate change. Phenomena of climatological interest include the atmospheric boundary
Short-term mission independent Short-term Missions Organizations (STMs) as well as denominations and individual churches that facilitate these trips all over the world. Many STMs "sending agencies" are adopting of Standards of Excellence in Short-term Missions. Many individuals going on short-term mission trips raise partial or full support from family and friends to help pay for their trip. Costs include not only travel, food and lodging, but often associated project expenses as well. In recent years, a number of services like have been established to help individuals raise support for their short-term mission trips using online email and social media tools. Criticisms Recently,