Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes
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Transcript of Climate-mediated coupling of hydrology and biogeochemistry on arctic hillslopes
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Climate-mediated coupling of hydrology
and biogeochemistry on arctic hillslopes
Tamara Harms (UAF), Sarah Godsey (ISU), Mike Gooseff (PSU), Jay Jones (UAF)
Students: Margit Jaeger (UAF ugrad), Becca Risser (UAF M.S.), Caitlin Rushlow (ISU Ph.D.)
Teacher: Melissa Barker
Funding: Office of Polar Programs, National Science Foundation
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Changing hydrology and Changing hydrology and elemental cycleselemental cycles
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Changing hydrology and Changing hydrology and elemental cycleselemental cycles
Annual nit
rate
export
(kg
N
)
19
90
1
99
2
19
94
1
99
6
19
98
2
00
0
20
02
1200
1000
800
600
400
200
0
McClelland et al. 2007
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Water tracks
30% of the Upper Kuparuk basin (McNamara et al. 1997)
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Climate-mediated coupling of hydrology and
biogeochemistry on arctic hillslopess•How do storage and transport of
water influence temporal patterns in fluxes of water and solutes from water tracks?
•How does delivery of water and solutes by hydrologic flowpaths influence uptake and transport of N and P within water tracks?
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Water tracks•Continuously measure discharge (flumes fitted with pressure transducers)
•Monitor thaw and snow dynamics (thermocouples, manual surveys)
•Daily water chemistry (automated samplers)•Storm chemistry (precipitation gauge triggered)•Nutrient uptake experiments (surface and
subsurface)
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Support to dateCPS: snowmachines, boardwalks
Fairbanks expeditor
Shop access, building expertise
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Support to dateSupport to date
Lab space:Lab space:water, water,
““wet” side/”dry” sidewet” side/”dry” side
Office space (up to 5 people)Office space (up to 5 people)
Key to have clear space assignments in Key to have clear space assignments in advance, including sample storageadvance, including sample storage
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•truck available for use in Fairbanks
•email notification when items arrive in Toolik or Fairbanks
•additional trucks FAI-Toolik and Toolik-SCC
Gear and personnel transport
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Science support•refrigerator/freezer/space designated for
natural abundance isotope work
•early (May) and late season (Sept) helo support
•support or streamlined permitting process
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•airborne LiDAR
•low elevation, high resolution imagery (J. Cherry)
•Clearinghouse for spatial data:
‣ catalog available data
‣ query needs
‣ advocate for Toolik users
Spatial data