Clark Labs is pleased to announce they have released a DVD archive of monthly global NDVI (Normalized Difference Vegetation Index) and EVI (Enhanced Vegetation Index) MODIS data. The MODIS data were processed by NASA Goddard from the Terra sensor projected on a 0.05 degree climate modeling grid. The DVD includes over 3 gigabytes of data from the MOD13C2 product, for the years 2000 – 2009, formatted and preprocessed for immediate input into the IDRISI GIS and Image Processing software. None of the original values were altered. The DVD is available for only $30 plus shipping and handling.
Historical data is crucial for the analysis of earth trends and dynamics, particularly for change detection and prediction and long-term image series analysis. Time series analysis is critical for exploring such global events as El Nino and related sea surface temperature anomalies and impacts. Although such data is a valuable resource for analysts–publicly available and typically free–a significant amount of effort must be invested before the data is ready for analysis. Files for each time period, typically at sizes of over 100 mb, must be downloaded individually. The data then needs to be imported and pre-processed. This archive allows analysts and researchers to bypass the tedious yet necessary data download and preparation process, freeing up more effort for a project’s analytical goals.
This data archive is a particularly significant resource as input for the Earth Trends Modeler application within the IDRISI software. Earth Trends Modeler, an application for the exploration and analysis of image time series data, includes a coordinated suite of data mining tools and a variety of techniques for the extraction of global trends and the impacts of climate change. The new data archive can immediately be used within Earth Trends Modeler.
The DVD also includes monthly atmospheric temperature data from Remote Sensing System (RSS), processed from the Microwave and Advanced Microwave Sounding Units on NOAA polar-orbiting platforms and in a 2.5 degree grid.
Using the data for Earth Trends Modeler
The new data archive is well-suited for use within IDRISI Taiga’s Earth Trends Modeler application. Earth Trends Modeler provides a wealth of functionality to examine trends and anomalies in image time series data. Tools are provided to analyze long term trends, examine relationships, uncover patterns of variability, and explore trends in seasonality. Earth Trends Modeler also includes all of the necessary pre-processing tools to prepare your data for analysis.
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