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Reanalysis Hydrologic Cycle Panel

Learn how reanalysis enhances understanding of the hydrologic cycle globally. Access data for research and applications at various time scales and resolutions.

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Reanalysis Hydrologic Cycle Panel

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  1. Reanalysis Hydrologic Cycle Panel • GEWEX, CEOP overview • J. Roads • Remote Sensing • F. R. Roberston • MAPS Regional model assimilation of snow • S. Benjamin • Hydrologic Applications • C. Ropelewski • General Discussion • All

  2. Water and Energy Cycle Research cf. A. Schlosser

  3. GEWEX Program Elements

  4. AMMA CSEs

  5. CSE Annual Mean Climates(Roads et al. 2002. J. Hydrometeorology; Roads 2002; GEWEX News. Lawford et al., 2004?: BAMS-submitted)

  6. Reanalysis would contribute to: • Individual CSE hydrometeorological studies • MAGS, GAPP, LB A, BALTEX, GAME, MDB and others (e.g. AMMA, La Plata) • GHP hydrometeorological studies • WEBs (Global Water and Energy Budget studies) • WRAP (Global Water Resource Application Project) • CEOP (Coordinated Enhanced Observing Period) • SCW (Sources and Cycling of Water) • PRED (Hydrometeorological Predictability) • EX (Hydrometeorological Extremes) • Transferability (regional and global)

  7. GHP WEBS (in progress)

  8. REANII Hydrologic Cycle (land region)

  9. 4DDA In Situ GLDAS MPIM UCAR Goddard 0.1 TB 50 TB 5+? TB CEOP is an internationally coordinated hydrometeorological data production & research pilot effort (Jul. 1, 2001-Dec. 31, 2004) Remote Sensing/Data Integration U. Tokyo 500 TB User

  10. Initial Energy ComparisonsRoads, J., M. Bosilovich, M. Kanamitsu, M. Rodell, 2003: CEOP Pilot Data Comparisons. CEOP Newsletter 3, 2-5. • HC • Main balance of QR although LP also contributes • Need CpdT/dt computation • QR • Substantial diurnal cycle in atmospheric cooling ~ 0 during early afternoon, as well as surface heating. • G • Ground heated by subsurface flux during night and cooled during day again need to look at obs.

  11. Summary • A continuing reanalysis project would help us to better define the global hydrologic cycle and link to a global community of researchers evaluating and utilizing reanalysis products for a wide variety of hydrologic research and application studies • Diurnal to interannual time scales at high temporal, spatial resolution are of major concern • To fully analyze the hydrologic cycle, reanalysis should disseminate: • Input and verifying observations • 3 hourly analysis and first guess files • Continuous accumulations of hydrologic components • Moist. Conv., as well as Precip, Evap., runoff, snowmelt, etc. • Storage Terms • Water vapor, soil moisture, snow, etc. • Associated energy terms

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