Atmospheric Chemistry with Large and Small UAS in the Arctic James W. Elkins NOAA Earth Systems...
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Atmospheric Chemistry with Large and Small UAS in the Arctic
James W. ElkinsNOAA Earth Systems Research Laboratory
Global Monitoring Division
The NOAA-Environment Canada UAS Arctic Scoping Workshop
September 25, 2012
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Outline of Talk
1.Motivation and Introduction
2.Science: Transport & Ozone Depletion
3.Future Possibilities: ATTREX and SkyWisp UAS
4.Conclusions
Arctic Sea Leads observed during GloPac by ACAM from Scott Janz NASA Goddard
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PlatformAltair
(Turbo Prop)Predator-B
Global Hawk(Jet)
SkyWisp(Glider)
Endurance (hr) 32 31 24
Altitude(ft) 52,000 65,000 100,000
Range(nm) 6,500 11,000 <40
Payload(lb.) 750 <1500 3
UAS used or proposed for NOAA Atmospheric Chemistry Apps
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Mission Dates Platform Flights
NOAA UAS Demo
2005 Altair 5
NASA Fire Mission
2006 Altair 6
GloPac 2010Global Hawk
5
ATTREX 2011-16Global Hawk
5+
StratCore 2012-13 SkyWisp 4
Atmospheric ChemistryUAS Experiments
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Box weighs 27 kg (60 lb.), 24.6 x 40.6 x 45.7 cm (9.7x16x18.1”), 45.6 liters. Inlet Pump (KNF model 627), and two gas cylinders (N2 carrier & reference gas) adds another 9 kg (20 lbs.)Measures O3 once every 10 seconds (commercial unit 2B,Inc.)Measures N2O, SF6 every 70 seconds and CO, H2, CH4 every 140 seconds. On board calibration.Also measures water vapor (Maycomm, LLC), relative humidity, and ambient temperature (Vaisala LTD. probe) once every second. New improved ozone and H2O instruments supported by NASA.
Compounds in red are measured by NASA Aura Satellite Instruments.
Unmanned aircraft systems Chromatograph for Atmospheric Species
(UCATS)
In bay #25 of Global Hawk
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Observation of Tropopause Fold on the UAS Altair
Five hour test flight finds fold aboveGray Butte, CA airfield.
PV plot courtesy ofLeslie Lait, (NASA/GSFC)
A
B
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NCAR’s HIAPER or GV
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0.5 - 0.7 ppm
13
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Ozone loss observed on 7 April
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CLaMS Model Simulation for 7 April 2010 (450K ~ 17 km)
Courtesy of Jens-Uwe Grooss, Forschungszentrum Juelich
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CLaMS Accumulated Ozone Loss since 1 Dec 2009
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NOAA SkyWisp UAS Configuration
•Glider plus payload (3)
•Ground Station (2)
•GlideTerm Software
• Trackable Antenna System
•Glider Comms System
•Manual RC System
• Launching System
• Launching Supplies Fred Moore, Co-I, with SkyWisp
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NOAA Aircore
•U.S. Patent No. 7597014 (10/6/2009) by Pieter Tans NOAA/GMD
• First design was 150 m x 1/4” SS tubing, Smaller now.
•Weighs ~ 16 lbs.
• Launched locally by balloon.
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Passive AirCore Sampling System
100,000 feet
Fill Gas
Captured profile
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CO2Jan. 14, 2012 Jan. 15, 2012
SGP Tower
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Typical SkyWisp flight profile
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SkyWisp is produced by Southwest Research Institute
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Summary•Overflight of the Global Hawk over the GV
during HIPPO/3 produced similar tracer-tracer relationships with structure.
•Breakup of the polar vortex with low ozone during HIPPO/3 and GloPac was observed in filaments. Agreement of ozone loss between ozone loss and model simulation.
•EC collaboration on Global Hawk during ATTREX with British (contact: Eric Jensen)?
•EC Collaboration with SkyWisp in Boulder and Canada
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•Questions?
Thanks for Listening to My Presentation