During the 21st Century, CO2 concentration in the atmosphere is to increase considerably causing global temperature increase. Few degrees increase in the atmosphere can have serious consequences on public health and diseases re-emergence and diffusion. For example, tropical diseases could increase in mid-latitudes, since mosquitoes and other disease-carrying insects may found appropriate climate and environment.
Warming/cooling trends can be due also to natural cycles or low-frequency climate oscillations: i.e. multidecadal in nature. Scientists have only begun to study these effects during the past 150 years. Most scientists agree that just as climate affects our lives, human beings can affect the climate system. The interactions between natural low-frequency climate variability, anthropogenic effects, and impacts on public health are under studies.
Remote sensing and associated datasets and products provide key information on the general circulation in the atmosphere (= blocking ridges,atmospheric pollution, nebulosity, drought/flooding prone areas …). This kind of information when available for long period of time, can be used for multidisciplinary studies including those on climate /environment and public health.