An increasing body of evidence over the past several decades have shown that our earth climate system has experienced significant changes. Climate researchers need access to climate data to enable them analyse and formulate mitigation or adaptation strategies to aid decision making. Data must often be readily available to researchers and users at different geographical locations in a distributed manner. However, access to climate data with comprehensive analysis tools are limited to expensive specialized data servers which can provide mass volumes of climate data from internet based portals. Developing countries lack the relevant knowledge and resources to acquire and manage such expensive infrastructure. The goal of this book is to develop an inexpensive web-based climate data distribution system to enable third world climate scientists to access and analyze data free of chargeusing Open source software tools. The OpeNDAP is an software framework developed by Massachusetts Institute of Technology (MIT) and The University of Rhode Island (URI) to provide a platform for building inexpensive distributed data infrastructure.