DYNAMO — CSU

> SOUNDINGS
> GRIDDED
> ARRAY-AVG'S
> DROPSONDES
> QC PRODUCTS
> SATELLITE
> MAPS
> X-SECTIONS

Dynamics of the Madden-Julian Oscillation Experiment

CSU Mesoscale Dynamics Group

ARRAY-AVERAGED PRODUCTS

★ NOTE: ★
The latest versions of final products (sounding data, gridded datasets, and array averages) are now available at the website for the DYNAMO Legacy Data Project.

General Information:

These data products were created by objectively analyzing upper-air soundings and other data sources onto a regular 1-degree, 25-hPa grid using multiquadric interpolation. The gridded data fields were then averaged over the Northern Sounding Array (NSA) and the Southern Sounding Arrays (SSA).

The Northern Sounding Array (NSA) and the Southern Sounding Array (SSA) are defined by the following sites:

Sounding Array	Boundary Sites	Lat	Lon
NSA	Colombo	6.91 N	79.87 E
	Revelle	0.10 N	80.50 E
	Gan	0.69 S	73.15 E
	Malé	4.19 N	73.53 E

SSA	Revelle	0.10 N	80.50 E
	Mirai	8.00 S	80.50 E
	Diego Garcia	7.35 S	72.48 E
	Gan	0.69 S	73.15 E

Note that the two ships (the Revelle and Mirai) actually moved slightly over time from their nominal positions indicated above. It was these nominal positions, however, that were used to define the averaging areas for the two sounding arrays.
Vertical info: 25 hPa resolution from 1000 to 50 hPa plus surface
Temporal info: every 3 hours (00, 03, 06, 09, 12, 15, 18 and 21 UTC) for 1 Oct. thru 31 Dec. 2011
These products are available as simple ASCII text files. See one of the Readme files below for important information regarding data sources, file formats and references.
The following array-averaged products are available:
- Basic fields (z, u, v, omega, T, theta, q, rh, div, and vort).
- Large-scale forcing fields (i.e., advective tendencies of T and q).
- Q1 and Q2 (i.e., apparent heat source and moisture sink).
- Moist static energy (MSE) terms (complete form with g*z in tendency and horizontal advection terms).
- Moist static energy (MSE) terms (based on primitive equations with no g*z in tendency or horizontal advection terms).
- Dry static energy (DSE) terms.
- Budget-derived quantities (rainfall and <Qr> which is column integrated net-radiation) along with surface latent and sensible heat WHOI fluxes at daily resolution and 3-hourly CERES <Qr>.
- TRMM 3-hourly rainfall estimates (based on the 3B42v7 product) averaged over various regions.
DYNAMO map (map_dynamo.png) and visual sounding inventory (invent_vis.png) are shown below.

Version 3a:

Based on observations only; no supplemental model analysis.
Released: 30 Sep 2014
Updated: 21 Nov 2014 (MSE and DSE products)
Updated: 16 Jan 2015 (a few minor edits to "fields" and "nsa" files; see Readme for details)
Corrected: 29 Sep 2015 ("fields" files recomputed using corrected gridded dataset; corrections primarily to vorticity values)
Readme file
All products ("tar.gz" file): Version 3a Products

Individual products:

	NSA (V3a)	SSA (V3a)
Basic Fields	fields.nsa_3a	fields.ssa_3a
LS Forcing Fields	lsf.nsa_3a	lsf.ssa_3a
Q1 and Q2	q1q2.nsa_3a	q1q2.ssa_3a
MSE Terms (complete form)	msec.nsa_3a	msec.ssa_3a
MSE Terms (prim. eq. form)	msep.nsa_3a	msep.ssa_3a
DSE Terms	dse.nsa_3a	dse.ssa_3a
Budget-Derived Quantities	eopo.nsa_3a	eopo.ssa_3a
TRMM Rainfall	trmm_rain

NetCDF files of select products from above:
- Select NSA version 3a products: dynamo_nsa_v3a.nc
- Select SSA version 3a products: dynamo_ssa_v3a.nc

Version 3b:

Based on observations supplemented with ECMWF OA.
Released: 30 Sep 2014
Updated: 21 Nov 2014 (MSE and DSE products)
Updated: 16 Jan 2015 (a few minor edits to "fields" files; see Readme for details)
Corrected: 29 Sep 2015 ("fields" files recomputed using corrected gridded dataset; corrections primarily to vorticity values)
Readme file
All products ("tar.gz" file): Version 3b Products

Individual products:

	NSA (V3b)	SSA (V3b)
Basic Fields	fields.nsa_3b	fields.ssa_3b
LS Forcing Fields	lsf.nsa_3b	lsf.ssa_3b
Q1 and Q2	q1q2.nsa_3b	q1q2.ssa_3b
MSE Terms (complete form)	msec.nsa_3b	msec.ssa_3b
MSE Terms (prim. eq. form)	msep.nsa_3b	msep.ssa_3b
DSE Terms	dse.nsa_3b	dse.ssa_3b
Budget-Derived Quantities	eopo.nsa_3b	eopo.ssa_3b
TRMM Rainfall	trmm_rain

NetCDF files of select products from above:
- Select NSA version 3b products: dynamo_nsa_v3b.nc
- Select SSA version 3b products: dynamo_ssa_v3b.nc

Map of DYNAMO Sounding Network Upper-air sounding network for DYNAMO/CINDY/AMIE. Polygons show areas over which gridded analyses were averaged.

Visual DYNAMO Sounding Inventory Visual sonde inventory of upper-air data for six core sites based on Level 4 data (i.e., 5-hPa interpolated). Each line of dots represents a successful sounding. Larger missing data gaps at RV Revelle and Mirai are the result of ship port calls. Analyses are most reliable when ships are on-site.