Limits of agricultural greenhouse gas calculators to predict soil N2O and CH4 fluxes in tropical agriculture
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Limits of agricultural greenhouse gas calculators to predict soil N2O and CH4 fluxes in tropical agriculture. / Richards, Meryl; Metzel, Ruth; Chirinda, Ngonidzashe; Ly, Proyuth; Nyamadzawo, George; Duong Vu, Quynh; de Neergaard, Andreas; Oelofse, Myles; Wollenberg, Eva; Keller, Emma; Malin, Daniella; Olesen, Jørgen E.; Hillier, Jonathan; Rosenstock, Todd S.
In: Scientific Reports, Vol. 6, 26279, 2016.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Limits of agricultural greenhouse gas calculators to predict soil N2O and CH4 fluxes in tropical agriculture
AU - Richards, Meryl
AU - Metzel, Ruth
AU - Chirinda, Ngonidzashe
AU - Ly, Proyuth
AU - Nyamadzawo, George
AU - Duong Vu, Quynh
AU - de Neergaard, Andreas
AU - Oelofse, Myles
AU - Wollenberg, Eva
AU - Keller, Emma
AU - Malin, Daniella
AU - Olesen, Jørgen E.
AU - Hillier, Jonathan
AU - Rosenstock, Todd S
PY - 2016
Y1 - 2016
N2 - Demand for tools to rapidly assess greenhouse gas impacts from policy and technological change in the agricultural sector has catalyzed the development of 'GHG calculators'- simple accounting approaches that use a mix of emission factors and empirical models to calculate GHG emissions with minimal input data. GHG calculators, however, rely on models calibrated from measurements conducted overwhelmingly under temperate, developed country conditions. Here we show that GHG calculators may poorly estimate emissions in tropical developing countries by comparing calculator predictions against measurements from Africa, Asia, and Latin America. Estimates based on GHG calculators were greater than measurements in 70% of the cases, exceeding twice the measured flux nearly half the time. For 41% of the comparisons, calculators incorrectly predicted whether emissions would increase or decrease with a change in management. These results raise concerns about applying GHG calculators to tropical farming systems and emphasize the need to broaden the scope of the underlying data.
AB - Demand for tools to rapidly assess greenhouse gas impacts from policy and technological change in the agricultural sector has catalyzed the development of 'GHG calculators'- simple accounting approaches that use a mix of emission factors and empirical models to calculate GHG emissions with minimal input data. GHG calculators, however, rely on models calibrated from measurements conducted overwhelmingly under temperate, developed country conditions. Here we show that GHG calculators may poorly estimate emissions in tropical developing countries by comparing calculator predictions against measurements from Africa, Asia, and Latin America. Estimates based on GHG calculators were greater than measurements in 70% of the cases, exceeding twice the measured flux nearly half the time. For 41% of the comparisons, calculators incorrectly predicted whether emissions would increase or decrease with a change in management. These results raise concerns about applying GHG calculators to tropical farming systems and emphasize the need to broaden the scope of the underlying data.
KW - Journal Article
U2 - 10.1038/srep26279
DO - 10.1038/srep26279
M3 - Journal article
C2 - 27197778
VL - 6
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 26279
ER -
ID: 169134478