NEAQS 2004

Meteorological summary for Gulf of Maine and northern coastal New England


Wayne M. Angevine


18 July


March 23, 2005


(From PSU synoptic summary):   The Low Pressure system continued its track up the coastline throughout the day.  A lot of moisture was pumped up from the ocean bringing about showers all through New England ahead of the Southward approaching warm front.  Low Level Winds: 00Z (18): Inland: NE 5-10 kts; Coastal: N/NW 5-10 kts; Offshore: SW 5-10 kts. 12Z (18): Inland: NE 5 kts; Coastal: Light and Variable; Offshore: S/SE 5-10 kts. 00Z (19): Inland: W/NW 5-10 kts; Coastal: W 5-10 kts; Offshore: S/SW 10-15 kts.

Temperatures (highs): Pease 81F / 27C, Gulf of Maine Buoy (44005) 65F / 18C, Yarmouth 65F / 18C

Temperatures (lows): Pease 65F / 18C, Gulf of Maine Buoy (44005) 59F / 15C, Yarmouth 54F / 12C

Fog: Fog surrounding the coast of Nova Scotia throughout the day.  Some patchy fog settled in Southern ME in the early morning hours.  Clouds: Clouds increased dramatically throughout the forecast period leaving most of New England with overcast conditions through the evening.  Northern ME=Broken. 

Ozone and CO

Modest levels of ozone were observed at the ship in southerly to southwesterly flow.  This was probably 12-24 hour transport from the urban corridor.

Figure 1:  Maximum 1-h surface ozone from EPA AIRNOW


Figure 2:  FLEXPART footprint for 0008-0033 UTC

Figure 3:  FLEXPART footprint for 0545-0607 UTC

Figure 4:  FLEXPART footprint for 1139-1208 UTC

Figure 5:  FLEXPART footprint for 2321-2359 UTC

Ship track

Figure 6:  Ozone along the ship track

Figure 7:  Wind direction along the ship track