1. Derived Over-Ocean Water Vapor Transport from Retrieved E-P Data Sets
B.J. Sohn
School of Earth and Environmental Sciences
Seoul National University, Seoul, Korea

2. How are we going to use satellite-derived water budget quantities to validate hydrological cycles revealed in model reanalysis products, in combination with GAME data sets?
Comparison of monthly, vertically integrated water and energy balance components between global 'standard' data sets and CSE data sets (GEWEX WEBS Initiative 1, John Roads)

3. Water Budget Studies from Reanalysis Data
ECMWF
NCEP
Model analysis approach further needs improvement to reduce the uncertainties in our knowledge of the global hydrological cycle (e.g., atmospheric transport from reanalysis data are short of resolving the water balance inferred from stream flow data over the river basins in United States, Roads et al., 2002).

4. divQ = [E-P] , Q = Qd + Qn
divQ = [E-P] = 2F
[Qd] = -F
(Prof. T.-C. Chen)

5. Seven Year (1988-94) JFM Mean Climatology [SSM/I]

6. RAOB-derived divQ vs. SSM/I E-P over NSEA and SESA (daily average)
Validation against RAOB-Derived Flux Div.
RAOB-derived divQ vs. SSM/I E-P
over NSEA and SESA (daily average)

7. Water Vapor Flux (kg/sec/m)
Seven Year ( ) JFM Mean N-S Transport [Ocean]
Latitude
90N
60N
30N EQ
30S
60S
90S
Water Vapor Flux (kg/sec/m)
-80
-60
-40
-20 20 40
ECMWF (P) + HOAPS (E)
ECMWF (P) + SSM/I (E)
ECMWF (P) + COADS (E)
ECMWF (P) + NCEP (E)
ECMWF (P) + ECMWF (E)
NCEP (P) + HOAPS (E)
NCEP (P) + SSM/I (E)
NCEP (P) + COADS (E)
NCEP (P) + NCEP (E)
NCEP (P) + ECMWF (E)
SSM/I (P) + HOAPS (E)
SSM/I (P) + SSM/I (E)
SSM/I (P) + COADS (E)
SSM/I (P) + NCEP (E)
SSM/I (P) + ECMWF (E)
GPCP (P) + HOAPS (E)
GPCP (P) + SSM/I (E)
GPCP (P) + COADS (E)
GPCP (P) + NCEP (E)
GPCP (P) + ECMWF (E)

8. Seven Year (1988-94) JFM Mean E-W Transport [10N-10S]
Longitude
60E
80E
100E
120E
140E
160E
180
160W
140W
120W
100W
80W
Water Vapor Flux (kg/sec/m)
-80
-60
-40
-20 20 40 60
ECMWF (P) + HOAPS (E)
ECMWF (P) + SSM/I (E)
ECMWF (P) + COADS (E)
ECMWF (P) + NCEP (E)
ECMWF (P) + ECMWF (E)
NCEP (P) + HOAPS (E)
NCEP (P) + SSM/I (E)
NCEP (P) + COADS (E)
NCEP (P) + NCEP (E)
NCEP (P) + ECMWF (E)
SSM/I (P) + HOAPS (E)
SSM/I (P) + SSM/I (E)
SSM/I (P) + COADS (E)
SSM/I (P) + NCEP (E)
SSM/I (P) + ECMWF (E)
GPCP (P) + HOAPS (E)
GPCP (P) + SSM/I (E)
GPCP (P) + COADS (E)
GPCP (P) + NCEP (E)
GPCP (P) + ECMWF (E)
Seven Year ( ) JFM Mean E-W Transport [10N-10S]

9. 13 Year Mean Moisture Transport (kg/sec/m)
DJF
JJA
Annual 52 27 7 24 21 26 22 19 1 22 14
2.3 mm/day
Divergence
4.2 mm/day
Convergence
1.2 mm/day
Convergence

10. Time-Series of Hydrological Variables ( Jan 1988 – Dec 2000)