Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 1.490
IF1.490
IF 5-year value: 1.445
IF 5-year
1.445
CiteScore value: 2.9
CiteScore
2.9
SNIP value: 0.789
SNIP0.789
IPP value: 1.48
IPP1.48
SJR value: 0.74
SJR0.74
Scimago H <br class='widget-line-break'>index value: 88
Scimago H
index
88
h5-index value: 21
h5-index21
Volume 34, issue 2
Ann. Geophys., 34, 279–291, 2016
https://doi.org/10.5194/angeo-34-279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 34, 279–291, 2016
https://doi.org/10.5194/angeo-34-279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 18 Feb 2016

Regular paper | 18 Feb 2016

Atmospheric CO2 source and sink patterns over the Indian region

Suvarna Fadnavis1, K. Ravi Kumar2,4, Yogesh K. Tiwari1, and Luca Pozzoli3 Suvarna Fadnavis et al.
  • 1Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune, India
  • 2Department of Environmental and Geochemical Cycle Research, JAMSTEC, Yokohama, Japan
  • 3Eurasia Institute of Earth Sciences, Istanbul Technical University, Istanbul, Turkey
  • 4National Institute of Polar Research, Tokyo, Japan

Abstract. In this paper we examine CO2 emission hot spots and sink regions over India as identified from global model simulations during the period 2000–2009. CO2 emission hot spots overlap with locations of densely clustered thermal power plants, coal mines and other industrial and urban centres; CO2 sink regions coincide with the locations of dense forest. Fossil fuel CO2 emissions are compared with two bottom-up inventories: the Regional Emission inventories in ASia (REAS v1.11; 2000–2009) and the Emission Database for Global Atmospheric Research (EDGAR v4.2) (2000–2009). Estimated fossil fuel emissions over the hot spot region are  ∼  500–950 gC m−2 yr−1 as obtained from the global model simulation, EDGAR v4.2 and REAS v1.11 emission inventory. Simulated total fluxes show increasing trends, from 1.39 ± 1.01 % yr−1 (19.8 ± 1.9 TgC yr−1) to 6.7 ± 0.54 % yr−1 (97 ± 12 TgC yr−1) over the hot spot regions and decreasing trends of −0.95 ± 1.51 % yr−1 (−1 ± 2 TgC yr−1) to −5.7 ± 2.89 % yr−1 (−2.3 ± 2 TgC yr−1) over the sink regions. Model-simulated terrestrial ecosystem fluxes show decreasing trends (increasing CO2 uptake) over the sink regions. Decreasing trends in terrestrial ecosystem fluxes imply that forest cover is increasing, which is consistent with India State of Forest Report (2009). Fossil fuel emissions show statistically significant increasing trends in all the data sets considered in this study. Estimated trend in simulated total fluxes over the Indian region is  ∼  4.72 ± 2.25 % yr−1 (25.6 TgC yr−1) which is slightly higher than global growth rate  ∼  3.1 % yr−1 during 2000–2010.

Publications Copernicus
Download
Short summary
Analysis of 10 years (2000–2009) of Carbon Tracker (CT-2010) model CO2 fluxes gives insights into the regional variation of CO2 fluxes over the Indian land mass. CO2 emission hot spots overlap with locations of densely clustered thermal power plants, coal mines, and other industrial and urban centres. CO2 sink regions coincide with locations of dense forests with less industrial centres. CO2 fossil fuel emissions show good agreement with two bottom-up inventories REAS v1.11 and EDGAR v4.2.
Analysis of 10 years (2000–2009) of Carbon Tracker (CT-2010) model CO2 fluxes gives insights...
Citation