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 Submitted to Archive
LongRadiative Flux Analysis Evaluation ProductOrder Data
LongBalloon-Borne Sounding SystemOrder Data
XieSingle Column Model ForcingOrder Data
FengCombined Remote Sensor Retrieval (CombRet)Order Data

Additional Data Sets

IOP ParticipantData Source DescriptionFinal Data Submitted to Archive
OueDisdrometerOrder Data
LongBalloon-Borne Sounding SystemOrder Data

ARM Mobile Facility Instruments

Data Source DescriptionFinal Data Submitted to Archive
Cimel Sunphotometer
Browse Data
Eddy Correlation Flux Measurement System
Ground Radiometers on Stand for Upwelling Radiation
Browse Data
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
Multifilter Rotating Shadowband Radiometer
Browse Data
Micropulse Lidar
Browse Data
Microwave Radiometer
Browse Data
Microwave Radiometer, 3 Channel
Browse Data
Rain Gauge
Browse Data
Radar Wind Profiler
Surface Energy Balance System
Sky Radiometers on Stand for Downwelling Radiation
Browse Data
Balloon-Borne Sounding System
Browse Data
Total Sky Imager
Browse Data
Vaisala Ceilometer
Browse Data
Video Disdrometer
Browse Data
X-Band Scanning ARM Cloud Radar
Browse Data