Wind trajectories Related to Diamondback Moth (DBM) and Aster Leafhopper
Introductions to the Canadian Prairies in 2015
BACKGROUND: Potential wind events capable of carrying insect pests from source areas in the USA can be identified by following trajectories for air parcels through time. High altitude air masses, originating from southern locations, frequently move northerly to Canadian destinations. Insect pest species such as Diamondback moth and Aster leafhoppers, traditionally unable to overwinter above the 49th parallel, can utilize these air masses in the spring to move north from Mexico and the United States (southern or Pacific northwest).
Wind trajectory data processing by AAFC-Saskatoon Staff (Weiss &
Olfert) began in April. Reverse Trajectories track air
masses arriving across the prairies back to their point of origin. Forward
Trajectories predict favorable winds expected to arrive
across the Canadian Prairies.
Updated: May 23-25, 2015
1. Reverse trajectories (RT)
This week, RTs are originating over the Arctic, tracking south to pass
over South and North Dakota and tracking north into the Canadian prairies.
2. Forward trajectories (FT)
This week, Environment Canada models project that FTs crossing the
prairies are expected to originate from the following sites:
Location
|
Projected
Arrival Dates
|
BOZEMAN_MONTANA
|
25/05/2015
|
EASTERN_WASHINGTON
|
25/05/2015
|
MOSCOW_IDAHO
|
25/05/2015
|
EASTERN_WASHINGTON
|
24/05/2015
|
MANHATTAN_KANSAS
|
24/05/2015
|
MOSCOW_IDAHO
|
24/05/2015
|
BROWNSVILLE_TEXAS
|
23/05/2015
|
EASTERN_WASHINGTON
|
23/05/2015
|
MOSCOW_IDAHO
|
23/05/2015
|
