storm_tracking.py

'''

  Software for the tracking of storms
  based on detected storm position data.

'''

# Load required modules

import numpy as np
import storm_functions as storm

#
# Automated storm tracking
#

# Load in detected positions and date/hour information
filename = '/home/oliver/data/stormTracking/20CR/storm_det_slp'
data = np.load(filename + '.npz')
det_storms = data['storms']
year = data['year']
month = data['month']
day = data['day']
hour = data['hour']

# Initialize storms discovered at first time step

storms = storm.storms_init(det_storms, year, month, day, hour)

# Stitch storm tracks together at future time steps

T = len(det_storms) # number of time steps
for tt in range(1, T-1):
    print tt, T
    # Track storms from time step tt-1 to tt and update corresponding tracks and/or create new storms
    storms = storm.track_storms(storms, det_storms, tt, year, month, day, hour, dt=6)

# Add keys for storm age and flag if storm was still in existence at end of run
for ed in range(len(storms)):
    storms[ed]['age'] = len(storms[ed]['lon'])

# Strip storms based on track lengths
storms = storm.strip_storms(storms, dt=6, d_tot_min=0., d_ratio=0., dur_min=12)

# Save tracked storm data
np.savez('storm_track_slp', storms=storms)