Update earth_observation_product.md

docs/earth_observation_product.md

@@ -6,11 +6,13 @@ title: Earth observation product
 
 ## 1 Definition
 
-A representation of a phenomenon that can be coded into information. A product serves multiple purposes and cross-domain applications. A characteristic of EO products is that they should undergo some data transformation for being considered decision-ready or inference-ready information. 
+(indicative levels 2 and 3) are the direct output from standardized satellite data processing chains, representing fundamental geophysical and biophysical variables. These products demonstrate direct traceability to original satellite measurements through rigorous calibration and validation processes. The processing methodology prioritizes the conversion of raw sensor data into quantifiable physical measurements, maintaining strict adherence to standardized processing protocols and validation requirements. 
 
 ### Notes 
-- aka geophysical and biophysical parameters (surface temperature, leaf area index, etc.)
+ 
 ### Examples 
-
+- Soil moisture from microwave sensors
+- Forest canopy height from LiDAR data
+
 ### Sources
 - KCEO