Remote Sensing of Soil Moisture

Table 10

Root mean square errors (g/g) associated with retrieval of soil moisture (gravimetric) by physical modeling of PALS L band observations considering the retrieved soil moisture is representative of the in situ 0–6 cm layer soil moisture [41].

Calibration days	Note	vwc < 1	1 < vwc < 2.5	2.5 < vwc < 3.5	3.5 < vwc < 4.5	4.5 < vwc
178, 189	1 dry, 1 wet	0.0375	0.0343	0.0287	0.0327	0.0439
176, 186, 189	1 dry, 2 wet	0.0404	0.0310	0.0365	0.0504	0.0436
178, 188, 189	1 dry, 2 wet	0.0475	0.0338	0.0309	0.0271	0.0398
176, 178, 189	2 dry, 1 wet	0.0398	0.0297	0.0230	0.0519	0.0518
176, 178, 187	2 dry, 1 wet	0.0442	0.0042	0.0252	0.0661	0.0465
188, 189	2 wet	0.0326	0.0341	0.0403	0.0334	0.0283
176, 178	2 dry	0.0455	0.0033	0.0221	0.0737	0.0472
176, 188, 189	1 dry, 2 wet	0.0333	0.0286	0.0299	0.0391	0.0454