|
||||||
|
|
||||||
MODIS Data at NSIDCHome | Data Summaries | Versions | Image Gallery | Order Data | News | V004 CMG Browse | Research | FAQs | Terra vs. Aqua |
 |
On Wednesdays from 9:00 a.m. to 11:00 a.m. (USA Mountain Time), AMSR-E, ICESat/GLAS, MODIS, and NISE data are normally unavailable for ordering due to system maintenance.
The Moderate Resolution Imaging Spectroradiometer (MODIS) snow and sea ice data are available from four data sources: the Data Pool, the Search n Order Web Interface (SNOWI), the MODIS SNOWI, and the Warehouse Inventory Search Tool (WIST). The following table provides a link to each data source and also gives an explanation as to what each data source offers; thus, explaining why you may want to use one data source over another data source. The highest version number represents the best quality data available.
Data Source Link |
Data Source Information |
Data Pool |
The Data Pool gives you direct FTP access to the NSIDC EOS data. Please note that the Date Pool may not contain the full time series for all data sets. It offers users the HEG - HDF-EOS to GeoTIFF Conversion Tool, which allows users to reformat, re-project, and perform subsetting operations. However, this version of the HEG tool does not have all the features of the standalone HEG tool, which offers stitching and mosaicing. |
Subscription |
Subscribe to have new MODIS data automatically sent via FTP to your local server, or staged on NSIDC's FTP site when the data becomes available. |
SNOWI |
You can use the Search n Order Web Interface (SNOWI) to access the entire archive of MODIS/Terra and MODIS/Aqua data. Easy interface to use. Can order 1500 granules per order. Only searches NSIDC data. It does not offer subsetting. |
MODIS SNOWI |
Can only search and order the following Level-3 gridded MODIS data by specific tiles: MOD10A1, MYD10A1, MOD10A2, MYD10A2, MOD10C1, MYD10C1, MOD10C2, MYD10C2, MOD29P1D, MYD29P1D, MOD29P1N, MYD29P1N, MOD29E1D, and MYD29E1D. Does not support swath data sets. Can order 1500 granules per order. Easy interface to use and easy tile search features. |
WIST |
You can use the Warehouse Inventory Search Tool (WIST) to access the entire archive of MODIS/Terra and MODIS/Aqua data as well as data from a wide variety of other instruments and other data centers. It also searches multiple DAACs. The WIST also allows you to tile search by parameter or spatial subsetting. However, you can only order 1000 granules per order, and it is a cumbersome interface to use. |
MIST |
The MODIS Interactive Subsetting Tool (MIST) provides a 7 km by 7 km subset time series of certain Version 5 (V005) MODIS products over the Greenland Climate Network (GC-Net) and the International Arctic Systems for Observing the Atmosphere (IASOA) stations. MIST also provides limited online analysis capabilities that include generating time series and scatter plots. Data are provided in a text Comma Separated Value (CSV) file format, courtesy of the Oak Ridge National Laboratory Distributive Active Archive Center (ORNL DAAC). |
To learn about the different versions of MODIS snow and sea ice products available from NSIDC, refer to the MODIS Product Versions Web site.
Browse images can help you select snow and sea ice products by providing an overall view of the geographic boundaries and cloud cover for a given scene. For browse images of MODIS snow cover and sea ice products, please visit the NASA Goddard Space Flight Center: MODIS Land Global Browse Images Web site. The MODIS Rapid Response System also produces browse images of visible MODIS imagery to assist in selecting cloud-free scenes.
MODIS data are in Hierarchical Data Format - Earth Observing System (HDF-EOS) format, which is the standard data format for all EOS data products. HDF is a multi-object file format developed at the National Center for Supercomputing Applications (NCSA) at the University of Illinois. Tools and information about reading data in HDF-EOS format are available from NSIDC's Hierarchical Data Format - Earth Observing System (HDF-EOS) Web site.
Quality assessment of MODIS/Terra products is available from the NASA Goddard Space Flight Center: MODIS Land Quality Assessment Web site.
Page last updated: 08/01/08
