1. TWP-ICE Surface Radiation Measurements Chuck Long MAJOR kudos to: Brad Atkinson, Anthony Noonan Nigel Tapper, Ian McHugh and crew Mike and Jerimiah Reynolds

2. Location of surface radiation sites

3. What, where, when… 1-minute data available.

4. Wanted: Clear Skies!!! SW - 160 O FOV LW – “effective” –High, cold cirrus OK

5. Flux Analysis With LWdn –Continuous estimated clear-sky LWdn –LW cloud effect (clear-measured LW) –LW “effective” sky cover (low and mid) –LW cloud field radiating temperature With SWdn total and diffuse –Identified clear-sky periods –Continuous estimated clear-sky SWdn –SW cloud effect (clear-measured SW) –Total sky cover –For overcast, effective vis optical depth

6. Flux Analysis With upwelling SW and LW –Continuous estimated clear-sky upwelling SW & LW –Upwelling cloud effect –Complete surface radiative cloud forcing

7. It was a dark and stormy…Day! Jan. 16, 2006 Cape Don Garden Point