Last week, the CARVE science crew got ready for the up-coming CARVE May campaign.  The 

JPL crew arrived at Fairbanks on May 1.  With good weather, Carve flew on May 2-3 with flights over Fort Yukon and Nikolai, located in the Koyukuk valley Longitude vs Altitude vs Ch4 plot below, shows the boundary layer between 3,000 and 4,000 meters. 

Due to continued inclement weather this week in Alaska, CARVE was only able to fly 2 days.  First flight was to Fort Yukon (4/9) and the second flight was over the Innoko (4/10).

Fort Yukon data summary:

Surface brightness temperatures -10 to +5 C
+1 to +5 ppm CO2 enhancements
+5 to +50 ppb CH4 enhancements 

Innoko data Summary:

During the October campaign, the CARVE team successfully executed 6 flights and accumulated nearly 40 flight hours. Flights to western Alaska in particular showed that there were still strong surface-atmosphere emissions of CO2 and CH4 despite freezing surface conditions.

Also this week, CARVE's team received correspondence from the Proceeding of the National Academy of Science (PNAS), which has given final approval for publication of "Methane emissions from Alaska in 2012 from CARVE airborne observations"

For the week of 8 September to 14 September, CARVE flew two flights which included, Fort Yukon, and the lower Kuskokwin valley. During the flight over the Kuskokwin valley, CARVE acquired very high CO2 and CH4. On 13 September, CARVE concluded the successful September campaign.

CARVE flew 17 flight hours over Innoko, Huslia and Bettles areas.  During these flights, CARVE observed enhanced CH4.

This week CARVE flew three science flight days. Two flight days were over Fort Yukon, and the last day was south of McGrath.

With improved Alaska’s weather the week of 15 June, CARVE flew 5 science flights for a total of 30 science flight hours  and  covered greater than 5000  nautical miles. For the month of June, CARVE flew a total of 47 science flight hours in 14 calendar days.

On May 26, CARVE flew two separate flights. The first flight was to Fort Yukon, and the second was to Minto flats and Nikolia.

We observed low C02 and enhanced CH4.

Below is a new product: CH4 Altitude vs. Lat and Long . Breaks in data are due to instrument calibration periods.

Between May 23 - 25, CARVE flew 3 science flights which included, Nome, Innoko, and Minto Flats. (Flight tracks below)

May 23 CARVE science flight data from the Nome area show enhanced CO2 and CH4.

May 24 CARVE science flight data from Innoko shows CO2 were close to background, but CH4 exhibited 20 to 50 ppb enhancements.