DYNAMO Cruise Info
TOGA Radar Scanning
Timothy Lang
Revelle Ship Schedule
DYNAMO Leg 1
23 August Arrive Port Darwin
Install TOGA Radar
29 August Depart Darwin, Australia
Schedule as of 27 April 2011
Revelle Ship Schedule
DYNAMO Leg 1
5 September Arrive/Depart Cocos (Keeling) Islands
Staff exchange
Revelle Ship Schedule
DYNAMO Leg 1
26 September Arrive Tuticorin, India (aka Thoothukudi)
DYNAMO Leg 2
29 September Depart Tuticorin
Park at 80 E (or further east) on Equator
31 October Arrive Tuticorin
DYNAMO Leg 3
5 November Depart Tuticorin
Park at 80 E (or further east) on Equator
10 December Arrive Tuticorin
DYNAMO Leg 4
14 December Depart Tuticorin
Pinkel Cruise
5 January Arrive Tuticorin
TOGA Radar Scanning during DYNAMO
Major Scan Period - 30 minutes
Three minor periods plus single low-PRF 0.5° sweep (300-km range)
Minor Scan Period - 10 Minutes
8-10 minutes full 360° PPI volume
0-2 minutes RHIs
PPI, then RHI
0
PPI, then RHI
PPI, then Surv
PPI, then RHI
PPI, then RHI
30 min
Three Scan Types for PPI Volumes (150-km range)
Scan A - SHALLOW: 5 minutes emphasize shallow angles, repeat
Scan B - FAR: 8-9 minutes, top 15-18 km beyond 30-40 km range,
emphasize vertical resolution
Scan C – NEAR: 8-9 minutes, top 15-18 km within 30-40 km range,
reduced vertical resolution
One RHI set
Scan D – 1-2 minutes, 2 ° s-1 rate, up to 40° elevation, 3-6 sweeps total
PPI, then Surv
60 min
Scan A – Run when there is nothing but sea clutter, or extremely shallow echo
Scan B – Default scan for 70-90% of raining periods
Scan C – Run when tall convection is very close to ship
Progress from Scans A to B to C as highest elevation angle becomes insufficient
to top convection. Must anticipate as we change volumes on the 10s, not 5s.
Progress from Scans C to B to A as the highest elevation angle of the next
shallowest scan becomes sufficient to top convection
Scan A will last 5 minutes and repeat (probably run a little shorter than 5 min to
allow time for long-range single sweep every 30 minutes)
Precip Scans (B & C) will last 8-9 minutes, timing and angles TBD
The remaining time before the 10 minute mark will be filled with preset RHI
sweeps (Scan D)
Every third minor period, RHIs will be replaced by single long-range sweep
Will make use of timing capabilities in IRIS scan controller software
Timothy Lang will work with Steve Rutledge, Brenda Dolan, and Nick
Guy to design angles and timing for all scans
Timothy Lang and Nick Guy will finalize all scans while on Leg 1, and
will provide training documents (as well as in-person training to Leg 2
staff) at the end of Leg 1
Leg 2 participants, Nick and Timothy will train you in Tuticorin on 27
September. We leave 28 September, one day before the ship departs.
Also recommend Legs 3 and 4 staff work with previous Leg’s staff to
set a date for in-person training in Tuticorin.
Plan for 8-12 hour shifts, single scientist at a time, 24/7 ops. Scientists
will be responsible for calling switches between A, B, & C, and for
setting azimuth angles for Scan D.
You will take notes in a single word-processing document for the entire
cruise, bring a copy of that document, along with data/imagery, with
you when you disembark. New Leg starts a new scientific notes
document.
Plan for radar imagery
1. Install Texas A&M software on CSU laptop
2. Archive data (UF or Raw) on CSU drives
3. Run software daily to create a set of daily summary images
4. Transfer imagery to Internet-capable computer via thumb drive
5. Upload imagery once per day to DYNAMO servers