Appendix H. Plots of trajectories for the worst visibility days for the Virgin Islands National 

Park 2000 – 2004.

In EPA’s docket for the Virgin Islands Federal Implementation Plan, there are snapshots of the 

trajectories described in Appendix F. Here is a list of the files: the snapshot jpeg files are listed 

in the docket and each begins with the letter ‘H’ in the docket. The KMZ files are not in the 

docket – see below for how to get these files from EPA.

.kmz files are available from EPA, in order to see the trajectories more easily. The kmz files can 

be seen in the publically available Google Earth program. Contact kelly.bob@epa.gov to get a 

set of the kmz files.

The next page has the list of the days that EPA modeled with trajectories. It is the same list as 

Table 3-4 in the FIP and in Appendix F.
Table Error! No text of specified style in document.3-1: Summary of Trajectory Analyses for Top Four Days with the 

Highest Visibility Impairment for Each Species 2000 – 2004

Species Total 

Light 

Extinct

-ion 

(bext)

Date Source Region (Height of Trajectory in Meters Above Ground Level)

Local Regional Long-Distance

All 

Aerosols

Combined

79.5 06 23 2004 St. John (100, 500) Anguilla (100) NW Africa (500, 1000)

77.4 08 01 2004 St. John (100, 500, 1000) None NW Africa (1000)

71.8 07 08 2004 St. John (100, 500, 1000) Anguila (500) Central Africa (1000)

71.1 08 01 2003 St. John (100, 500) Anguila (100) 

St. Martin (500)

African Coast (1000)

Fine Soil 19.9 09 26 2002 None None Central Africa (500, 1000)

17.9 08 01 2004 St. John (100, 500, 1000) None NW Africa (1000)

17.3 08 03 2002 None Guadeloupe (100) Central Africa (1000)

16.9 06 14 2004 St. John (1000) Guadeloupe (100, 500) Central Africa (1000)

Sea Salt 24.2 03 07 2003 St. John (100, 500, 1000) None None

21.8 03 10 2003 St. John (100) Anguila (100) None

18.9 08 01 2003 St. John (100, 500) Anguila (100) 

St. Martin (500)

African Coast (1000)

17.9 02 12 2001 St. John (100, 500, 1000) None None

Sulfate 42.0 04 24 2003 St. John (100) Puerto Rico (1000) None

34.9 11 21 2001 St. Thomas (100) Puerto Rico (100, 500) 

Dominican Rep. (1000)

Florida (500)

26.8 08 03 2002 None Guadeloupe (100) Central Africa (1000)

26.6 02 27 2004 None Montserrat (500) Western U.S. (1000)

Nitrate 5.2 05 09 2003 St. John (100, 500, 1000) Anguila (500)

Barbuda (1000)

None

4.8 11 15 2001 None St. Martin (100)

Barbuda (500)

Canada (100, 500, 1000)

4.52 08 01 2003 St. John (100, 500) Anguila (100) 

St. Martin (500)

African Coast (1000)

4.52 05 21 2003 Puerto Rico (500, 1000) Dominica (100)

Guadeloupe (500)

None

Elemental 

Carbon

15.5 09 05 2002 St. John (500, 1000)

BVI (100)

None Central Africa (1000)

African Coast (500)

14.0 01 08 2002 None St. Martin (100) Mideast U.S. (100)

Mexico, Florida (500, 1000)

13.3 08 13 2004 None St. Martin (100, 500) None

10.3 11 20 2003 None BVI (100, 500) Canada, N.E. U.S. (100)

Organic 

Carbon

18.4 01 08 2002 None St. Martin (100) Mideast U.S. (100)

Mexico, Florida (500, 1000)

17.2 09 05 2002 St. John (500, 1000)

BVI (100)

None Central Africa (1000)

African Coast (500)

7.09 10 26 2002 St. John (100, 500, 1000) None Central Africa (1000)

7.05 08 13 2004 None St. Martin (100, 500) None

Coarse 

PM

34.4 09 26 2002 None None Central Africa (500, 1000)

33.4 06 23 2004 St. John (100, 500) Anguilla (100) NW Africa (500, 1000)

30.5 08 08 2001 St. John (100, 500, 1000) BVI (100, 500, 1000) W Africa (100, 500, 1000)

28.8 07 14 2003 St. John (500, 1000) BVI (100, 500) None

Dates in italics are days when it was a top four date for more than one species of particles.