Campaign : ARM MJO Investigation Experiment on Gan Island

2011.10.01 - 2012.03.31

Website :

Lead Scientist : Chuck Long

For data sets, see below.


The overarching campaign, which included the AMF2 deployment in conjunction with the DYNAMO and CINDY2011 campaigns, was designed to test several current hypotheses regarding the mechanisms responsible for MJO (Madden-Julian Oscillation) initiation and propagation in the Indian Ocean area. The synergy between the proposed AMF2 deployment with DYNAMO/CINDY2011, and the corresponding funded experiment on Manus, combine for an overarching ARM MJO Investigation Experiment (AMIE) with two components: AMF2 on Gan Island, Maldives (AMIE-Gan) where the MJO initiates and starts its eastward propagation, and the Manus ARM site (AMIE-Manus) which is in the general area where the MJO usually starts to weaken in climate models. AMIE-Gan provided measurements of particular interest to ASR researchers relevant to improving the representation of MJO initiation in climate models. The framework of DYNAMO/CINDY2011included two proposed island based sites, and two ship-based locations forming a square pattern with sonde profiles and scanning precipitation and cloud radars at both island and ship sites. These data were used to produce a Variational Analysis data set coinciding with the one produced for AMIE-Manus. The synergy between AMIE-Manus and AMIE-Gan allowed studies of the initiation, propagation, and evolution of the convective cloud population within the framework of the MJO. As with AMIE-Manus, AMIE-Gan/DYNAMO also included a significant modeling component geared toward improving the representation of MJO initiation and propagation in climate and forecast models.

Other Contacts

Anthony Del Genio
William Gustafson
Robert Houze
Christian Jakob
Michael Jensen
Richard Johnson
Stephen Klein
Xiaohong Liu
Edward Luke
Peter May
Sally McFarlane
Patrick Minnis
Courtney Schumacher
Andrew Vogelmann
Yi Wang
Shaocheng Xie
Chidong Zhang

Campaign Data Sets

IOP ParticipantData Source DescriptionFinal Data
LongRadiative Flux Analysis Evaluation Product Order Data
LongBalloon-Borne Sounding System Order Data
XieSingle Column Model Forcing Order Data
FengCombined Remote Sensor Retrieval (CombRet) Order Data

Additional Data Sets

IOP ParticipantData Source DescriptionFinal Data
OueDisdrometer Order Data
LongBalloon-Borne Sounding System Order Data

ARM Mobile Facility Instruments

Data Source DescriptionBrowse DataBrowse Plots
Vaisala Ceilometer
 Browse Data
Cimel Sunphotometer
 Browse Data
Eddy Correlation Flux Measurement System
Ground Radiometers on Stand for Upwelling Radiation
 Browse Data Browse Plots
High Spectral Resolution Lidar
 Browse Data
Ka-Band Scanning ARM Cloud Radar
 Browse Data
Ka ARM Zenith Radar
 Browse Data
Surface Meteorological Instrumentation
 Browse Data Browse Plots
Multifilter Rotating Shadowband Radiometer
 Browse Data Browse Plots
Micropulse Lidar
 Browse Data
Microwave Radiometer
 Browse Data Browse Plots
Microwave Radiometer, 3 Channel
 Browse Data
Rain Gauge
 Browse Data Browse Plots
Radar Wind Profiler
Surface Energy Balance System
Sky Radiometers on Stand for Downwelling Radiation
 Browse Data Browse Plots
Balloon-Borne Sounding System
 Browse Data Browse Plots
Total Sky Imager
 Browse Data Browse Plots
Video Disdrometer
 Browse Data
X-Band Scanning ARM Cloud Radar
 Browse Data