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Derived Over-Ocean Water Vapor Transport from Retrieved E-P Data Sets

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 E-mail: sohn@snu.ac.kr.

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Derived Over-Ocean Water Vapor Transport from Retrieved E-P Data Sets

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  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 E-mail: sohn@snu.ac.kr

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

  7. 40 ECMWF (P) + HOAPS (E) 20 ECMWF (P) + SSM/I (E) ECMWF (P) + COADS (E) ECMWF (P) + NCEP (E) ECMWF (P) + ECMWF (E) 0 NCEP (P) + HOAPS (E) NCEP (P) + SSM/I (E) NCEP (P) + COADS (E) NCEP (P) + NCEP (E) NCEP (P) + ECMWF (E) -20 Water Vapor Flux (kg/sec/m) 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) -40 GPCP (P) + HOAPS (E) GPCP (P) + SSM/I (E) GPCP (P) + COADS (E) GPCP (P) + NCEP (E) -60 GPCP (P) + ECMWF (E) -80 90N 60N 30N EQ 30S 60S 90S Latitude Seven Year (1988-94) JFM Mean N-S Transport [Ocean]

  8. 60 ECMWF (P) + HOAPS (E) 40 ECMWF (P) + SSM/I (E) ECMWF (P) + COADS (E) ECMWF (P) + NCEP (E) ECMWF (P) + ECMWF (E) 20 NCEP (P) + HOAPS (E) NCEP (P) + SSM/I (E) NCEP (P) + COADS (E) Water Vapor Flux (kg/sec/m) 0 NCEP (P) + NCEP (E) NCEP (P) + ECMWF (E) SSM/I (P) + HOAPS (E) SSM/I (P) + SSM/I (E) -20 SSM/I (P) + COADS (E) SSM/I (P) + NCEP (E) SSM/I (P) + ECMWF (E) -40 GPCP (P) + HOAPS (E) GPCP (P) + SSM/I (E) GPCP (P) + COADS (E) GPCP (P) + NCEP (E) -60 GPCP (P) + ECMWF (E) -80 60E 80E 100E 120E 140E 160E 180 160W 140W 120W 100W 80W Longitude Seven Year (1988-94) JFM Mean E-W Transport [10N-10S]

  9. 7 24 19 27 26 22 21 1 27 52 22 14 13 Year Mean Moisture Transport (kg/sec/m) DJF Annual JJA 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)

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