Coordination of different research groups working on field campaign observations:

(1) to produce reliable instantaneous sounding budget analysis of Q1 and Q2 as validation of heating profiles and forcing of CRMs

(2) to characterize the thermodynamic and dynamic structures of the field experimental domain, including upper air, surface and TOA energy and moisture budgets.

Recommendations

1) Available measurements during the field campaigns of KWAJEX, LBA, and SCSMEX should be assembled to including balloon soundings, profiler winds, surface energy fluxes, rain gauge data, radar image and rainfall, dual Doppler analysis, surface meteorological variables, TOA measurements, and operational analysis. This description can aid in the budget analysis and the understanding of physical processes in both CRMs and in satellite data.

2) The analysis domain of the KWAJEX and LBA will be re-defined to improve the sampling of the sounding network. This will make use of the drifted balloon locations in the analysis and the operational analysis as a background field. A uniform algorithm should be formulated to ingest sounding data, profiler data with the aid of operational analysis to perform the budget calculations.

3) Quality-controlled soundings will be subject to variational constraints to preserve the column-integrated budgets of moisture and energy in addition to the conservation of mass if the 6-hourly Q1 and Q2 analyses do not pass the precipitation tests.

4) We recommend participation of all TRMM researchers who are involved in the field campaigns. A small working group meeting is needed during the TRMM STM to facilitate the dialogue among the individual groups.

KWAJEX Action Items

Period 7/24/99 - 9/15/99

(a) Balloon Soundings

Jeff Halverson has started the budget analysis and will continue to work on the quality control and analysis of the sounding data.

(b) Surface flux and met vars.

Jose Fuentes will work to provide the following variables averaged to 30 minutes: surface latent and sensible heat fluxes, surface radiative fluxes (up and down, longwave and solar), surface air temp., surface pressure, SST, surface wind, surface humidity.

(c) Radar images and radar rainfall

Courtney Schumacher will work to provide the radar images and 30-min area averaged radar precipitation. The area will be defined shortly after discussions of Zhang with Jeff Halverson.

(d) Dual Doppler Analysis and Aircraft

These will be used primarily to aid the process understanding rather than the budget analysis, and Courtney will help to put together web links to these products.

(e) Synoptic condition and operational analysis

Paul Ciesielski will help to extract the operational reanalysis at a high temporary resolution that covers a larger area than the field campaign. The extracted data will include both upper air analysis and surface and TOA fluxes, prec, and clouds. They will be used to describe the synoptic condition as well as to aid the budget analysis.

(f) Rain gauge measurements

Courtney will obtain the gauge measurements and process them to 30 minutes from the gauge network.

(g) TOA satellite measurements

Minghua Zhang will look into the availability of the geostationary TOA product and broadband radiative fluxes.

(h) Profiler data

Winds from profilers will be merged with the sounding data in the budget analysis. (who has the profiler data ??)

(i) Analysis algorithms

Jeff, Johnson and Zhang will discuss this and formulate a plan a uniform algorithm to ingest soundings, profiler data with the aid of operational analysis.

(j) Variational Constraints

Minghua Zhang will help to variationally constrain the sounding analysis to conserved column integrated budgets of mass, moisture and energy.

*The CRM community needs continuous forcing to perform long-term simulation from 8/29 to 9/12. It also need special case simulations for 8/11, 8/19, 8/29 and 9/10.