The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.
white = 0 SIGRID points in EASE cell.
red = 1 SIGRID points in EASE cell.
blue = 2 or more SIGRID points in EASE cell.