South China Sea Monsoon Experiment (SCSMEX)

SCSMEX Formal Announcement (5.4 MB!)
(Please download directly to your computer and then print as a Post-Script file)

Primary Goal:

To provide a better understanding of the key physical processes for the onset, maintenance and variability of the monsoon over Southeast Asia and southern China leading to improved predictions.

There are three components to SCSMEX:

SCSMEX is a multi-national endeavor that is closely linked to and coordinated with activities of national weather services and research institutions of East Asian countries and adjacent regions as well as ongoing and planned US and international field experiments and research programs such as the Global Energy and Water Experiment (GEWEX) and Climate Variability (CLIVAR).


The SCSMEX field phase covers the period from 15 April to 31 August, 1998. During this time two Special Observing Periods (IOPs) are planned. The first SOP (SOP-1) is currently scheduled for 5-25 May; the second SOP (SOP-2), is scheduled for 5-20 June. There is an effort underway to make the SOP-2 twenty days also, i.e., 5-25 June. The period May-June is designated as the SCSMEX Intensive Observing Period (IOP). During this time 11 surface stations have been identified as critical for data gathering, necessitating 4 soundings per day for the entire IOP. The stations are: Nansha (59997), Hong Kong (96004), Gongsha (59792), Singapore (48698), Kuala Lumpur (48647), Brunei (96315), Xisha (59431), Sanya (59948), Philippines (98223), Chiang Mai (48327), and Chanthaburi (48480)/ Ho Chi Minh (48900?).


The SCSMEX Operations Center for the field phase of the experiment will be set up at the Guangdong Meteorological Bureau in Guangzhou. Plans are underway for space allocation and definition of data and communications requirements. Similarly, the organizational structure and staffing of the Operations Center are in the final planning stages.

Investigators, their co-investigators, assistants, etc., who plan to be at the Operations Center in Guangzhou during the field phase, or part thereof, need to start thinking about their working space requirements. In addition, those who plan to bring one or more workstations to Guangzhou need to inventory their property, including peripherals and power requirements. In the very near future a questionnaire will be issued on this page pertaining the above.


  1. A draft of the Operations Plan has been prepared by the SCSMEX International Project Office, and is under internal review.

  2. Taiwan's participation in SCSMEX involves more than twenty scientists. Most of them are from the National Central University, National Taiwan University, and the Central Weather Bureau.

    The budget for the meteorological and oceanographic operations has just been approved by the funding agency. Consequently, the following activities will be carried out by the scientists from Taiwan in support of SCSMEX:

    1. During the IOP, eight upper air stations will increase the observing frequency to four soundings per day.

    2. Additional data will be collected from 24 surface stations (at a frequency of 10 observations per day), hundreds of automated rain gauge systems, two radiation measuring stations, and 2-3 weather radar stations in the Taiwan area and surrounding islands.

    3. The research ship, OR#1 of NTU, will conduct a survey cruise, deploying XBT, CTD, ADCP and marine boundary layer measuring systems. The ship will deploy three ATLAS buoys and three ADCP between Nansha and Donsha Islands while carrying out rainsonde operations.

      Research ship, OR#3, will connduct an oceanographic survery between Taiwan and Luzon Strait.

    4. NCU's ISS will be deployed to Donsha Island for installation; the BMRC C-Pol Radar is now scheduled for deployment to Donsha Island also.

    5. The operational base of the aerosonde (Central Weather Bureau) will be located on the southern tip of Taiwan. The aerosonde will conduct upper air soundings.

    6. During the field phase, several scientists from Taiwan will participate actively at the SCSMEX Operations Center in Guangzhou.

  3. ATLAS buoy (SCS-1) real-time data may be found on
    and on


  1. SOC and SSC Meeting in Hong Kong, Hong Kong Observatory, 15-18 September 1997.
    Agenda not available as yet. The SCSMEX International Project Office will prepare the agenda about mid-August, and will include:

    Suggestions for agenda items may be sent to Prof. Ding or C.B. Emmanuel.

  2. ASEAN countries will meet in Singapore during late July to discuss scientific projects. SCSMEX has been put on the agenda.


SCSMEX Formal Announcement (5.4MB!)
(Please download directly to your computer and then print as a Post-Script file)

The SCSMEX web-page is

We need your thoughts on the design of the page and, of course, your input.

Please send your comments and contributions to; fax# +1 303-497-8633.
Last modified: 1 August 1997