Gemeente Alkmaar

Satellite Imagery & Radar Analysis Platform

Date Selection

Satellite Layers

RGB (True Color)
Natural color composite
100%
NDCI (Water Bodies)
Chlorophyll concentration in water
100%

RGB Change Detection

Detects urban expansion and vegetation changes between two time periods

More Less
50 (lower = more sensitive)
Include BGT Permits
Overlay legal construction permits
Show Change Detection
RGB comparison analysis

Legend

Changes detected (no BGT permit)
BGT areas shown as solid colors for clarity

Heat Risk Analysis (2022)

Visualize heat-related mortality risk for elderly populations

Heat Risk Map
Risk due to heat waves
100%
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Gemeente Alkmaar
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Select a layer above to see its description and interpretation guide.