With many global earth observation systems and missions focused on climate systems and the associated large volumes of observational data available for exploring and explaining how climate is changing and why , there is an urgent need for climate services . Giovanni , the NASA GES DISC Interactive Online Visualization ANd ANalysis Infrastructure , is a simple to use yet powerful tool for analysing these data for research on global warming and climate change , as well as for applications to weather . air quality , agriculture , and water resources ,