Java-DSP (J-DSP) is a free online Java applet that has been extensively used in signal processing education and research. We present the functionalities of J-DSP Earth Systems Edition (J-DSP/ESE) that uses the basic architecture of J-DSP, but has functions tailor-made for Earth systems signals. No text-based programming is required, so that users can focus on understanding signal processing concepts. Here, we describe the functionalities in the current version of J-DSP/ESE. A coherency analysis of Earth time series is presented. In order to overcome the inherent limitations of J-DSP/ESE in terms of memory and computations, a standalone Java application is proposed. This will greatly enhance the functionalities of the existing J-DSP/ESE applet. The standalone application will be platform independent and available for free. These additional functionalities of the application make it suitable for use in research as well as education.