(3) Vertical TCPW 2-4 kg/m2 large errors in continuous global ~400 mb ~50 km water vapor Or WV error std clouds sounder or rh in ? layers ±20– 30% (4) V ±4.5–5.5 m/s In situ continuous 55° N to 200–500 See Fig. (About 6,000/day in winds for low level 55°S mb 2.6 1983). (7,000/day in (CTW) CTW of winds 30–400 1990) (>45,000 per day ±9–10 m/s for suggest much km by 2000) Most are over high smaller oceans. Speed bias CTW of 1–3 m/s m/s. Newer systems 1–7 m/s better than old. (5) VS ±0.5–2 m/s Rms errors continuous 25-50 km Ocean (~58,000 values/day) Scatterometer <17 degrees over ~600 surface km swath
(3) Vertical water vapor sounder TCPW Or WV or rh in layers 2-4 kg/m2 error std ? ±20– 30% large errors in clouds continuous global ~400 mb ~50 km (4) winds (CTW) V ±4.5–5.5 m/s for low level CTW ±9–10 m/s for high CTW In situ of winds suggest much smaller of 1–3 m/s continuous 55° N to 55°S 200–500 mb See Fig. 2.6 30–400 km (About 6,000/day in 1983). (7,000/day in 1990) (>45,000 per day by 2000) Most are over oceans. Speed bias m/s. Newer systems 1–7 m/s better than old. (5) Scatterometer VS ±0.5–2 m/s <17 degrees Rms errors continuous 25-50 km over ~600 km swath Ocean surface (~58,000 values/day)
Chapter_2_v4-BW-macro.docx