GLOBE Land Cover Measurements Manual Mapping Land Cover Sample Sites Accuracy Assessment MultiSpec Computer assisted land cover mapping Accuracy Assessment Basic Advanced LC_Vis_1 Optional Biology Site

Our GPS readings are accurate to about ± 16 meters. Satellite ground tracks do not exactly cover any one 30 meter by 30 meter site If an area is homogeneous over a 90 m x 90 m area, the Landsat image and the Land Cover Site can be aligned We need to compare each ground site with a pixel in the Landsat image LC_Vis_2

Land Cover Sites Qualitative –All MUC classes –GPS –Photos –MUC –Visit 1 time Quantitative –MUC 0, 1, 4 –GPS –Photos –MUC –Biometry –Visit 1 time LC_Vis_8 Biology – Quantitative measurements – Visit 1 or 2 times each year

QUALITATIVE SITES MEASUREMENTS TO MAKE –Locate center of homogenous site (90 m X 90 m) –Complete field data worksheet –Identify and record latitude, longitude, elevation –Determine MUC class –Record metadata –Take a photo in each cardinal direction (N, E, S, W) –Report data and send photos to GLOBE Equipment Needs –GPS –Compass –MUC, GPS, and local vegetation student field guides –Camera –Qualitative land cover sample site - field data work sheet –Tubular densiometer –Clinometer –50m tape measure LC_Vis_3

Quantitative: Forest/Woodland Equipment Tubular densiometer Field data work sheet Compass GPS 50-meter tape Pen or pencil Clinometer Tree species ID guides MUC Field Guide/Glossary Biology Site –Permanent tree markers –Site markers LC_Vis_4

Quantitative:Forest/Woodland (MUC 0 or MUC 1) Measurements Canopy cover Ground cover Tree height Tree circumference MUC GPS Photos Tree species ID LC_Vis_5

Quantitative: Herbaceous MUC 4 Equipment Small bean bag Grass clippers or strong scissors 6 brown paper bags Tubular densiometer Biometry Field Data Work Sheet 50 m measuring tape GPS Compass Pen or pencil MUC Field Guide/Glossary Clinometer Tree species ID guides Permanent tree markers LC_Vis_7

Quantitative: Herbaceous MUC 4 Measurements MUC GPS Photos 3 Grass samples –green –brown -If trees are co-dominant -Canopy cover -Ground cover -Tree height -Tree circumference -Tree species ID LC_Vis_6