ERA

Download the full-sized PDF of Temperature sensitivity of N2O emissions from fertilized agricultural soils: Mathematical modeling in ecosysDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3C51C

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Renewable Resources, Department of

Collections

This file is in the following collections:

Journal Articles (Renewable Resources)

Temperature sensitivity of N2O emissions from fertilized agricultural soils: Mathematical modeling in ecosys Open Access

Descriptions

Author or creator
Grant, R.F.
Pattey, E.
Additional contributors
Subject/Keyword
Growth
Climate
N Fertilizer
Water-content
Grassland
Fluxes
Management
Carbon-dioxide
Fields
Nitrous-oxide emissions
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
N2O emissions have been found to be highly sensitive to soil temperature (T-s) which may cause substantial rises in emissions with rises in Ts expected in most climate change scenarios. Mathematical models used to project changes in emissions during climate change should be able to simulate the physical and biological processes by which this sensitivity is determined. We show that the large rises in N2O emissions with short-term rises in Ts (Q(10) > 5) found in controlled temperature studies can be modeled from established Arrhenius functions for rates of microbial C and N oxidation (Q(10) similar to 2) when combined with Ts effects on gaseous solubilities and diffusivities and with water effects on gaseous diffusivities, interphase gas transfer coefficients, and diffusion path lengths. Rises in N2O emissions modeled with a long-term rise in Ts during a climate warming scenario were smaller than expected from short-term rises in Ts. Nonetheless, annual N2O emissions rose by similar to 30% during three growing seasons in a cool humid maize-soybean rotation under a climate change scenario in which atmospheric CO2 concentration C-a was raised by 50%, air temperature T-a by 3 degrees C, and precipitation events by 5%. These model results indicate that climate warming may cause substantial rises in N2O emissions from fertilized agricultural fields in cool, humid climates.
Date created
2008
DOI
doi:10.7939/R3C51C
License information
Rights
© 2008 American Geophysical Union. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Grant, R. F., and E. Pattey (2008), Temperature sensitivity of N2O emissions from fertilized agricultural soils: Mathematical modeling in ecosys. Global Biogeochemical Cycles, 22, GB4019, doi:10.1029/2008GB003273.
Source
Link to related item

File Details

Date Uploaded
Date Modified
2014-04-24T22:25:02.643+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 821947
Last modified: 2015:10:12 11:50:15-06:00
Filename: GBC_22_2008_GB4019.pdf
Original checksum: e997f56c3aa6160563f53f1ad987423c
Well formed: true
Valid: true
File title: Temperature sensitivity of N2O emissions from fertilized agricultural soils: Mathematical modeling in ecosys
File author: R. F. Grant, E. Pattey
Page count: 10
Activity of users you follow
User Activity Date