1 / 22

Monsoon Research Collaboration: CTCZ & STORM Programs

Explore the Monsoon mechanisms, rainfall simulation, and severe weather patterns in India through observational plans and regional modeling. Address major issues for better prediction and understanding. India's contributions to the MAHASRI project.

yamal
Download Presentation

Monsoon Research Collaboration: CTCZ & STORM Programs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Science and Observation Plans CTCZ & STORM G. S. Bhat Centre for Atmospheric & Oceanic Sciences Indian Institute of Science Bangalore India The 1st MAHASRI/AMY Workshop, Tokyo 8,10 January 2007

  2. CTCZ Brief Background

  3. GPCP Precipitation Climatology MAY JULY

  4. Surface temperature during May & July (AIRS/NASA) MAY (HOT & DRY) JULY (WARM & WET)

  5. Low pressure area Monsoon Though MT ( Heat Low Dynamic Low) Mean SLP & Surface winds during July Axis of maximum rainfall - southward of MT

  6. Summer monsoon rainfall over India (June-September)

  7. Monsoon Zone Mean June–September rainfall over the Indian region south of 30 N

  8. Rain mainly results from the propagation of Monsoon systems (lows & depressions) Monsoon systems form over the surrounding North Indian Ocean & move over land Arabian Sea Bay of Bengal

  9. Observations – Rainfall results from Propagation • of monsoon systems • Models - unable to simulate this propagation • in the monsoon zone • Monsoon rainfall simulation - Poor • CTCZ - ? • Can we understand the mechanism of • propagation in nature? • Better prediction of Monsoon rainfall

  10. Major Issues to be Addressed • Clouds & Cloud systems • Hydrological Feedbacks • Aerosols (including along FH of Himalayas) • Surface Fluxes • Large scale Water & Energy balance • Role of Equatorial IO on monsoon • Diurnal & Intraseasonal variations

  11. Observations include • Over land • AWSs (~200), Flux towers (~10), • DW Radar network (IMD+IAF)~5-10 • Aerosol measurements (~10) • High resolution GPS radiosondes (5-10) • CCN & Cloud Microphysics • hydrology 2 Water sheds (Eastern • India, Hymalaya foothill) • Ocean - 2 to 3 ships • buoy network (~90E line, • 10S to 20N)

  12. Over land • AWSs (~25-50), SRGs ~100 • Flux towers (~5) • DW Radar network ~3-4 • Aerosol measurements (~10) • High resolution radiosondes (3-4) • CCN & Cloud Microphysics • hydrology 1 Water shed (Hymalaya • foothill) • Ocean - 1 ship • buoy network (~90E line) 2008 - Pilot

  13. Severe Thunderstorms – Observations & Regional Modeling STORMPrograme March – May (Pre-monsoon) Severe Thunderstorms & Tornadoes NW-SE traveling systems

  14. Occurrence of Severe thunderstorms over India Very frequent over Northeast India Cloud top exceeds 65000 feet!

  15. Monthly Thunderstorm Occurrence Peak: April-May STORM: March-May

  16. Study Area PILOT: 2006 Main : 2007-08 AWSs ~ 40 Flux towers - 3 Cloud Electrical characteristics & Lightning detectors ~ 10 locations DWRs - 2 • Radiosonde network • Mesoscale • Synoptic grid

  17. Megha-Tropiques: Satellite focusing on Tropical Clouds & Water Indo-French Collaboration Low inclination satellite (~TRMM) Launch year – 2009 Payloads: MADRAS (Microwave Analysis and Detection of Rain & Atmospheric Structures) SAPHIRE: Microwave Humidity sounder & Radiometer SCARAB:

  18. Indian Monsoon - Planetary Scale Circulation Strong links with east Asia & west Pacific MAHASRI Region very critical

  19. Weather knows no national boundaries India is very keen to collaborate with other Asian countries in monsoon research CTCZ & STORM: India’s contribution to MAHASRI Some data in 2008 but more extensive in 2009

  20. Celebrating the Monsoon, July 24-28 2007 Indian Institute of Science Bangalore http://caos.iisc.ernet.in Thank you

More Related