Last reviewed on 12-01-2023

Documentation of California's Greenhouse Gas Inventory (2023 Edition - Last updated on 12-1-2023)

♦ Category: Agriculture, Forestry and Other Land Use

IPCC: 3C4 - Aggregate Sources and Non-CO2 Emissions Sources on Land - Direct N2O Emissions from Managed Soils
Sector: Agriculture & Forestry : Histosol Cultivation : Direct

♦ Activity: Drained histosols -

♦ Greenhouse gas: Nitrous oxide ( N2O )

► Year 2018 —

● Greenhouse gas emission estimate —

Amount: 500.25 tonnes of N2O Emitted (149,074 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Drained histosols] * [Nitrogen emitted as N2O] * [Molecular weight ratio of N2O to N2]
Reference: IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programmed, Eggleston HAS., Biennia L., Miwa K., Negara T. and Tanabe K. (eds). Vol.4, Chap. 11: Managed Soils. Published: IGES, Japan. https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol4.html

● Activity level used in calculations —

Activity: Drained histosols = 39,800 ha
Basis: Compilation
Reference: CARB (2016). Technical support document on GHG inventory methodologies for the 2000-2014 inventory. See Discussion of nitrous oxide emissions from agricultural soil management available at: https://ww3.arb.ca.gov/cc/inventory/pubs/reports/2000_2014/ghg_inventory_00-14_technical_support_document.pdf

● Parameters and Constants used in calculations —

Parameter: Nitrogen emitted as N2O = 8,000 g / ha
Reference: IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by the National Greenhouse Gas Inventories Programmed, Eggleston HAS., Biennia L., Miwa K., Negara T. and Tanabe K. (eds). Vol.4, Chap. 11: Managed Soils. Published: IGES, Japan. https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol4.html
Constant: Acre to hectare conversion = 0.4046873
Reference: NIST (2008). Guide for the Use of the International System of Units (SI). Ambler Thompson & Barry N. Taylor (Ed.). NIST Special Publication 811, 2008 edition. National Institute of Standards and Technology, Gaithersburg, MD. http://physics.nist.gov/cuu/pdf/sp811.pdf
Constant: Molecular weight ratio of N2O to N2 = 1.571133815
Reference: IUPAC (2006). Atomic Weights of the Elements 2005 (IUPAC Technical Report). Pure Appl. Chem., Vol. 78, No. 11, pp. 2051–2066, 2006.
Constant: Global warming potential of N2O = 298
Reference: IPCC (2007). Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Solomon S., Qin D., Manning M., Chen Z., Marquis M., Averyt K.B., Tignor M., and Miller H.L. (eds.). http://www.ipcc.ch/publications_and_data/publications_ipcc_fourth_assessment_report_synthesis_report.htm

● Greenhouse gas emitted per unit activity (derived from values listed above) —

Amount: 12,569 g (i.e. 12.57 kg) of N2O per ha
3,745,583 g (i.e. 3.75 tonnes) of CO2eq. per ha