The reference collection is a great place to begin your research. These short relevant articles will give the basic understanding you need to formulate a good research question.
"... a high quality data set of daily and monthly records of basic meteorological variables from 1218 observing stations across the 48 contiguous United States."
"... this comprehensive encyclopedic dictionary covers the whole field of physical geography and provides an essential reference for all students and lecturers in this field." (publisher's description)
"These three volumes include more than 750 articles that explore major topics related to global warming and climate change-ranging geographically from the North Pole to the South Pole, and thematically from social effects to scientific causes." (publisher's description)
"... a comprehensive and authoritative review of physical, chemical and ecological characteristics of lakes and reservoirs, as well as describing their uses and environmental conditions and trends in all parts of the world." (publisher's description)
"... this atlas examines the causes of climate change and considers its possible impact on subsistence, water resources, ecosystems, biodiversity, health, coastal megacities, and cultural treasures." (publisher's description)