INDOEX Harmony Workshop Comparisons

Ron Brown Time Periods for Comparison


Contact person: Trish Quinn, quinn@pmel.noaa.gov

If you were on the Ron Brown during INDOEX, the time periods you should use for preparing your data for comparison to other platforms are listed below.   Times are in decimal day (GMT) where Jan 1 at noon = 1.5 and Feb. 23 at noon = 54.5.

There are two types of comparison periods listed. The first are side-by-side platform comparisons when the Ron Brown was next to KCO or the Sagar Kanya or during the C130 fly by. For the C130 fly by, the comparison time period is based on the time it took the ship to travel over the same distance that the C130 did.

The second are time periods based on scattering levels and trajectories. There are 3 scattering levels (aerosol light scattering at 550 nm in Mm-1) labeled Low, Medium, and High. These are further broken down by trajectory.

Scattering classification
 
Low(L) < 25 Mm-1
Medium(M) >= 25 and < 55 Mm-1
High(H)  >= 55 Mm-1

Trajectory classification
 
AS Arabian Sea, trajectory from India or Pakistan, then over the Arabian Sea to the ship.
BoBE  Bay of Bengal East, trajectory from Bay of Bengal with no India influence
BoBNE Bay Of Bengal Northeast, trajectory from the Bay of Bengal with influence from India and/or Sri Lanka
SIO  Southern Indian Ocean
NIO Northern Indian Ocean, trajectory from the Northern Indian Ocean to the ship with no land influence for 6 or 7 days

s Side by Side Platform Comparisons
 
  Start Stop
RB-C130 59.1917 59.3528
RB-KCO 63.75 64.75
RB-SK 68.458 69.458

 
 
 

Comparisons based on scattering levels and trajectories.
 
Start_Day End_Day Tot_days Scattering Traj
54.0854 57.1861 3.1007 L SIO
57.5 57.75 0.25 L NIO
58.0451 58.2965 0.2514 L BoBNE
63.5438 65.4889 1.9451 H BoBNE
66.5056 67.1312 0.6256 H AS
67.1319 67.8799 0.748 M AS
67.8806 69.4889 1.6083 L AS
72.7521 73.8993 1.1472 M AS
73.9 75.6347 1.7347 H AS
75.6896 76.0917 0.4021 M AS
76.0924 76.7389 0.6465 L AS
76.7521 77.2389 0.4868 L NIO
77.675 79.5097 1.8347 L NIO
85.3361 86.2569 0.9208 M AS
86.2576 86.7389 0.4813 L AS
88.7521 89.5306 0.7785 M BoBE
88.9611 89.0889 0.1278 H BoBE