Services for Analysis of the Greenland Environment (SAGE)
The Services for Analysis of the Greenland Environment (SAGE) adds analysis capabilities and a unique interface for specific Greenland data sets. It is a tool designed to help scientists access, integrate, and analyze data related to the history and status of Greenland's ice sheet in real time using timeseries, scatterplot, histogram, and box and whisker plots. Currently SAGE supports seven data sets. See Table 1 for a listing of those data sets.
DIF ID |
Data Set Title |
|---|---|
NSIDC-0032 |
DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures |
NSIDC-0066 |
AVHRR Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites |
NSIDC-0218 |
Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data |
NSIDC-0301 |
AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures |
NSIDC-0305 |
GLAS/ICESat 1 km Laser Altimetry Digital Elevation Model of Greenland |
NSIDC-0342 |
Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures |
MOD11A2 |
MODIS/Terra Land Surface Temperature & Emissivity 8-Day L3 Global 1 km SIN Grid V005 |
Sample Plots from the SAGE Interface
To give you an idea of what SAGE has to offer, below are some sample images of the different types of plots that can be generated using SAGE:
Time Series Plots
Figure 1. Mean 19 GHz Brightness Temperature (Horizontal Polarization, Descending Pass) Time Series for Central Greenland from April through October 2005
Figure 2. Snow Melt Daily Percent Time Series from May through October 2005
Histogram Bar Plot
Figure 3. Time Series of Histograms for Albedo from 1 July through 12 July 2000
Small Image Time Series Plot
Figure 4. Small Image Time Series of Albedo from 1 July through 12 July 2000
Box and Wisker Plot
Figure 5. Box and Whisker Time Series of Albedo from 1 July through 12 July 2000
PoDAG SAGE Usability Testing Survey
Now that you have had a chance to look at SAGE, please consider taking our online SAGE Data and Features Survey. Your comments are instrumental in helping us design a useful portal for the study of Greenland’s ice mass balance, and we appreciate any time you may have to help us in achieving this goal.
