We use the NASA's Earth Observing System Data Information System (
EOSDIS) to illustrate our two-phase query preview approach.
Using figures, such as the Smithsonian Institution's 10 million hits per day or the 50,000
EOSDIS (NASA) users per month, is a more realistic method for determining the value of digital information projects.
HDF was chosen by NASA as the standard data format for the
EOSDIS. "HDF is a multi-object file format for transferring graphical and numerical data between platforms," says Folke.
If budget problems continue,
EOSDIS will likely be reoriented and downsized.
NASA is currently devising the EOS Data and Information System (
EOSDIS), a nationwide computing system that will process, store and distribute EOS information to the estimated 10,000 researchers and other users around the world who will want access to it.
The MODIS vegetation products were retrieved from the online Data Pool, courtesy of the NASA
EOSDIS Land Processes Distributed Active Archive Center (LP DAAC), USGS/Earth Resources Observation and Science (EROS) Center, Sioux Falls, South Dakota, https://lpdaac.usgs.gov/.
Data obtained from NASA's Earth Observing System Data and Information System (
EOSDIS) Worldview, version 0.9.0.
[MODIS Surface Reflectance image from 2001 was retrieved from https://ladsweb.nascom.nasa.gov/ maintained by the NASA
EOSDIS Level 1 and Atmosphere Archive and Distribution System Distributed Active Archive Center (LAADS DAAC), NASA's Goddard Space Flight Center, Greenbelt, Maryland.
NASA
EOSDIS Land Processes DAAC, accessed 20 October 2015, https://doi.org/10.5067/MEaSUREs/VIP /VIPPHEN_NDVI.004.
To achieve maximum exposure contrast, we looked for available cloud-free Landsat TM images during springs/ autumns (i.e., the maximum vegetation period of the year for our study region) of 2005-2007 (the relevant years to our study period) from the NASA's Earth Observing System Data and Information System (
EOSDIS) website (https://earthdata.nasa.gov/).
To achieve maximum exposure contrast, we looked for available cloud-free Landsat TM images during springs/ autumns (i.e., the maximum vegetation period of the year for our study region) of 2011-2012 (the relevant years to our study period) from the NASA's Earth Observing System Data and Information System (
EOSDIS) website (https: //earthdata.nasa.gov/).