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RAP opportunity at National Institute of Standards and Technology     NIST

Frequency Combs for the Remote Sensing of Agricultural Gas Emissions


Physical Measurement Laboratory, Applied Physics Division

opportunity location
50.68.62.C0616 Boulder, CO

NIST only participates in the February and August reviews.


name email phone
Brian Richard Washburn 303-497-6110


Open path dual-comb spectroscopy (DCS) has been shown as a powerful tool for determining greenhouse gases emissions in urban areas [1] and oil/gas production regions [2].  We have recently shown that DCS can be used to precisely measure gas emissions from an agricultural setting [3].  Agricultural activities are significant sources of methane, ammonia, and nitrous oxide and DCS offers the ability to simultaneously measure multiple gases in a field environment. Not only is this indispensable for testing gas mitigation strategies, but for several agricultural science areas such as crop breeding and crop nutrient efforts.  In collaboration with a world-class team of optical and agricultural scientists, our work will extend DCS to agricultural systems where point-sampling-based approaches are insufficient, presenting opportunities for field-scale biogeochemical studies and ecological monitoring. 

1. E. M. Waxman et al., Estimating vehicle carbon dioxide emissions from Boulder, Colorado, using horizontal path-integrated column measurements. Atmospheric Chem. Phys. 19, 4177–4192 (2019).

2. S. Coburn et al., Regional trace-gas source attribution using a field-deployed dual frequency comb spectrometer. Optica. 5, 320–327 (2018).

3. D.I. Herman et al., Precise multispecies agricultural gas flux determined using broadband open-path dual-comb spectroscopy, Sci. Adv. 7, eabe9765 (2021).

key words
Fiber optics; Frequency comb; Nonlinear optics; Spectroscopy; Supercontinuum; Dual comb Spectroscopy; Ultrafast Optics; Agricultural gas measurements; Agriculture;


Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants


Base Stipend Travel Allotment Supplementation
$82,764.00 $3,000.00
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