The CarbonTracker Data Assimilation Shell (CTDAS) v1.0: Implementation and global carbon balance 2001-2015

Geoscientific Model Development

Volumn 10, Issue 7, 2017, Pages 2785-2800

  Van Der Laan Luijkx, Ingrid T ^a,b   Van Der Velde, Ivar R ^a,c,d,e   Van Der Veen, Emma ^a   Tsuruta, Aki ^f   Stanislawska, Karolina ^f   Babenhauserheide, Arne ^g   Fang Zhang, Hui ^h,i   Liu, Yu ^j   He, Wei ^e,k   Chen, Huilin ^d,e   Masarie, Kenneth A ^c,m   Krol, Maarten C ^a,b,l   Peters, Wouter ^a,e  

^a WAGENINGEN UNIVERSITY   (Netherlands)

^b UTRECHT UNIVERSITY   (Netherlands)

^c EARTH SYSTEM RESEARCH LABORATORY   (United States)

^d UNIVERSITY OF COLORADO   (United States)

^e UNIVERSITY OF GRONINGEN   (Netherlands)

^f FINNISH METEOROLOGICAL INSTITUTE   (Finland)

^g KARLSRUHE INSTITUTE OF TECHNOLOGY   (Germany)

^h INSTITUTE OF GEOGRAPHIC SCIENCES AND NATURAL RESOURCES RESEARCH   (China)

ⁱ UNIVERSITY OF CHINESE ACADEMY OF SCIENCES   (China)

^j ETH ZURICH   (Switzerland)

^k NANJING UNIVERSITY   (China)

^l SRON NETHERLANDS INSTITUTE FOR SPACE RESEARCH   (Netherlands)

^m SkyData Solutions LLC   (United States)

more..

Author keywords

[No Author keywords available]

Indexed keywords

ATMOSPHERE-BIOSPHERE INTERACTION; ATMOSPHERIC GAS; CARBON BALANCE; CARBON BUDGET; CARBON CYCLE; CARBON DIOXIDE ENRICHMENT; CARBON EMISSION; CARBON FLUX; CARBON SINK; DATA ASSIMILATION; FOSSIL FUEL; SOFTWARE; SOURCE-SINK DYNAMICS; TRACE GAS;

EID: 85024856899     PISSN: 1991959X     EISSN: 19919603     Source Type: Journal    
DOI: 10.5194/gmd-10-2785-2017     Document Type: Article

References (53)

1. Anderson, J., Hoar, T., Raeder, K., Liu, H., Collins, N., Torn, R., and Avellano, A.: The data assimilation research testbed a community facility, B. Am. Meteorol. Soc., 90, 1283-1296, https://doi.org/10.1175/2009BAMS2618.1, 2009.
2. Arellano, A. F., Hess, P. G., Edwards, D. P., and Baumgardner, D.: Constraints on black carbon aerosol distribution from Measurement of Pollution in the Troposphere (MOPITT) CO, Geophys. Res. Lett., 37, L17801, https://doi.org/10.1029/2010GL044416, 2010.
3. Babenhauserheide, A., Basu, S., Houweling, S., Peters, W., and Butz, A.: Comparing the CarbonTracker and TM5-4DVar data assimilation systems for CO2 surface flux inversions, Atmos. Chem. Phys., 15, 9747-9763, https://doi.org/10.5194/acp-15-9747-2015, 2015.
4. Basu, S., Guerlet, S., Butz, A., Houweling, S., Hasekamp, O., Aben, I., Krummel, P., Steele, P., Langenfelds, R., Torn, M., Biraud, S., Stephens, B., Andrews, A., and Worthy, D.: Global CO2 fluxes estimated from GOSAT retrievals of total column CO2, Atmos. Chem. Phys., 13, 8695-8717, https://doi.org/10.5194/acp-13-8695-2013, 2013.
5. Bruhwiler, L. M. P., Michalak, A. M., Peters, W., Baker, D. F., and Tans, P.: An improved Kalman Smoother for atmospheric inversions, Atmos. Chem. Phys., 5, 2691-2702, https://doi.org/10.5194/acp-5-2691-2005, 2005.
6. Chevallier, F., Ciais, P., Conway, T. J., Aalto, T., Anderson, B. E., Bousquet, P., Brunke, E. G., Ciattaglia, L., Esaki, Y., Fröhlich, M., Gomez, A., Gomez-Pelaez, A. J., Haszpra, L., Krummel, P. B., Langenfelds, R. L., Leuenberger, M., Machida, T., Maignan, F., Matsueda, H., Morguí, J. A., Mukai, H., Nakazawa, T., Peylin, P., Ramonet, M., Rivier, L., Sawa, Y., Schmidt, M., Steele, L. P., Vay, S. A., Vermeulen, A. T., Wofsy, S., and Worthy, D.: CO2 surface fluxes at grid point scale estimated from a global 21 year re-Analysis of atmospheric measurements, J. Geophys. Res., 115, D21307, https://doi.org/10.1029/2010JD013887, 2010.
7. Combe, M.: Modeling the coupled exchange of water and CO2 over croplands, PhD thesis, Wageningen University, Wageningen, the Netherlands, 2016.
8. Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., and Bauer, P.: The ERA-Interim reanalysis: configuration and perfor mance of the data assimilation system, Q. J. Roy. Meteor. Soc., 137, 553-597, https://doi.org/10.1002/qj.828, 2011.
9. Dlugokencky and Tans: Trends in Atmospheric Carbon Dioxide, NOAA/ESRL, available at: www.esrl.noaa.gov/gmd/ccgg/trends/, last access: 12 May 2017.
10. EDGAR4.2 Database: Emission Database for Global Atmospheric Research (EDGAR), release version 4.2, European Commission, Joint Research Centre (JRC)/PBL Netherlands Environmental Assessment Agency, available at: http://edgar.jrc.ec.europa.eu (last access: 14 July 2017), 2011.
11. Giglio, L., Randerson, J. T., and van der Werf, G. R.: Analysis of daily, monthly, and annual burned area using the fourthgeneration global fire emissions database (GFED4), J. Geophys. Res.-Biogeo., 118, 317-328, https://doi.org/10.1002/jgrg.20042, 2013.
12. Gurney, K. R., Law, R. M., Denning, A. S., Rayner, P. J., Baker, D., Bousquet, P., Bruhwiler, L., Chen, Y. H., Clals, P., Fan, S., Fung, I. Y., Gloor, M., Heimann, M., Higuchi, K., John, J., Maki, T., Maksyutov, S., Masarie, K., Peylin, P., Prather, M., Pak, B. C., Randerson, J., Sarmiento, J., Taguchi, S., Takahashi, T., and Yuen, C. W.: Towards robust regional estimates of CO2 sources and sinks using atmospheric transport models, Nature, 415, 626-630, https://doi.org/10.1038/415626a, 2002.
13. He, W., van der Velde, I. R., Andrews, A. E., Sweeney, C., Tans, P., van der Laan-Luijkx, I. T., Baker, I., Ju, W., Peters, W., and Chen, H.: CTDAS-Lagrange v1.0: A high-resolution data assimilation system for regional carbon dioxide observations, in preparation, 2017.
14. Huijnen, V., Williams, J., van Weele, M., van Noije, T., Krol, M., Dentener, F., Segers, A., Houweling, S., Peters, W., de Laat, J., Boersma, F., Bergamaschi, P., van Velthoven, P., Le Sager, P., Eskes, H., Alkemade, F., Scheele, R., Nédélec, P., and Pätz, H.-W.: The global chemistry transport model TM5: description and evaluation of the tropospheric chemistry version 3.0, Geosci. Model Dev., 3, 445-473, https://doi.org/10.5194/gmd-3-445-2010, 2010.
15. Jacobson, A. R., Mikaloff Fletcher, S. E., Gruber, N., Sarmiento, J. L., and Gloor, M.: A joint atmosphere-ocean inversion for surface fluxes of carbon dioxide: 1. Methods and global-scale fluxes, Global Biogeochem. Cy., 21, GB1019, https://doi.org/10.1029/2005GB002556, 2007.
16. Janssens, I. A., Freibauer, A., Ciais, P., Smith, P., Nabuurs, G. J., Folberth, G., Schlamadinger, B., Hutjes, R. W. A., Ceulemans, R., Schulze, E. D., Valentini, R., and Dolman, A. J.: Europes terrestrial biosphere absorbs 7 to 12% of European anthropogenic CO2emissions, Science, 300, 1538-1542, https://doi.org/10.1126/science.1083592, 2003.
17. Jiang, F., Chen, J. M., Zhou, L., Ju, W., Zhang, H., Machida, T., Ciais, P., Peters, W., Wang, H., Chen, B., Liu, L., Zhang, C., Matsueda, H., and Sawa, Y.: A comprehensive estimate of recent carbon sinks in China using both top-down and bottom-up approaches, Sci. Rep., 6, 22130, https://doi.org/10.1038/srep22130, 2016.
18. Joos, F., Roth, R., Fuglestvedt, J. S., Peters, G. P., Enting, I. G., von Bloh, W., Brovkin, V., Burke, E. J., Eby, M., Edwards, N. R., Friedrich, T., Frölicher, T. L., Halloran, P. R., Holden, P. B., Jones, C., Kleinen, T., Mackenzie, F. T., Matsumoto, K., Meinshausen, M., Plattner, G.-K., Reisinger, A., Segschneider, J., Shaffer, G., Steinacher, M., Strassmann, K., Tanaka, K., Timmermann, A., andWeaver, A. J.: Carbon dioxide and climate impulse response functions for the computation of greenhouse gas metrics: A multi-model analysis, Atmos. Chem. Phys., 13, 2793-2825, https://doi.org/10.5194/acp-13-2793-2013, 2013.
19. Kang, J.-S., Kalnay, E., Miyoshi, T., Liu, J., and Fung, I.: Estimation of surface carbon fluxes with an advanced data assimilation methodology, J. Geophys. Res., 117, D24101, https://doi.org/10.1029/2012JD018259, 2012.
20. Krol, M., Houweling, S., Bregman, B., van den Broek, M., Segers, A., van Velthoven, P., Peters, W., Dentener, F., and Bergamaschi, P.: The two-way nested global chemistry-Transport zoom model TM5: Algorithm and applications, Atmos. Chem. Phys., 5, 417-432, https://doi.org/10.5194/acp-5-417-2005, 2005.
21. Le Quéré, C., Moriarty, R., Andrew, R. M., Canadell, J. G., Sitch, S., Korsbakken, J. I., Friedlingstein, P., Peters, G. P., Andres, R. J., Boden, T. A., Houghton, R. A., House, J. I., Keeling, R. F., Tans, P., Arneth, A., Bakker, D. C. E., Barbero, L., Bopp, L., Chang, J., Chevallier, F., Chini, L. P., Ciais, P., Fader, M., Feely, R. A., Gkritzalis, T., Harris, I., Hauck, J., Ilyina, T., Jain, A. K., Kato, E., Kitidis, V., Klein Goldewijk, K., Koven, C., Landschötzer, P., Lauvset, S. K., Lefèvre, N., Lenton, A., Lima, I. D., Metzl, N., Millero, F., Munro, D. R., Murata, A., Nabel, J. E. M. S., Nakaoka, S., Nojiri, Y., OBrien, K., Olsen, A., Ono, T., Pérez, F. F., Pfeil, B., Pierrot, D., Poulter, B., Rehder, G., Rödenbeck, C., Saito, S., Schuster, U., Schwinger, J., Séférian, R., Steinhoff, T., Stocker, B. D., Sutton, A. J., Takahashi, T., Tilbrook, B., van der Laan-Luijkx, I. T., van der Werf, G. R., van Heuven, S., Vandemark, D., Viovy, N., Wiltshire, A., Zaehle, S., and Zeng, N.: Global Carbon Budget 2015, Earth Syst. Sci. Data, 7, 349-396, https://doi.org/10.5194/essd-7-349-2015, 2015a.
22. Le Quéré, C., Moriarty, R., Andrew, R. M., Peters, G. P., Ciais, P., Friedlingstein, P., Jones, S. D., Sitch, S., Tans, P., Arneth, A., Boden, T. A., Bopp, L., Bozec, Y., Canadell, J. G., Chini, L. P., Chevallier, F., Cosca, C. E., Harris, I., Hoppema, M., Houghton, R. A., House, J. I., Jain, A. K., Johannessen, T., Kato, E., Keeling, R. F., Kitidis, V., Klein Goldewijk, K., Koven, C., Landa, C. S., Landschötzer, P., Lenton, A., Lima, I. D., Marland, G., Mathis, J. T., Metzl, N., Nojiri, Y., Olsen, A., Ono, T., Peng, S., Peters, W., Pfeil, B., Poulter, B., Raupach, M. R., Regnier, P., Rödenbeck, C., Saito, S., Salisbury, J. E., Schuster, U., Schwinger, J., Séférian, R., Segschneider, J., Steinhoff, T., Stocker, B. D., Sutton, A. J., Takahashi, T., Tilbrook, B., van der Werf, G. R., Viovy, N., Wang, Y.-P., Wanninkhof, R., Wiltshire, A., and Zeng, N.: Global carbon budget 2014, Earth Syst. Sci. Data, 7, 47-85, https://doi.org/10.5194/essd-7-47-2015, 2015b.
23. Le Quéré, C., Andrew, R. M., Canadell, J. G., Sitch, S., Korsbakken, J. I., Peters, G. P., Manning, A. C., Boden, T. A., Tans, P. P., Houghton, R. A., Keeling, R. F., Alin, S., Andrews, O. D., Anthoni, P., Barbero, L., Bopp, L., Chevallier, F., Chini, L. P., Ciais, P., Currie, K., Delire, C., Doney, S. C., Friedlingstein, P., Gkritzalis, T., Harris, I., Hauck, J., Haverd, V., Hoppema, M., Klein Goldewijk, K., Jain, A. K., Kato, E., Körtzinger, A., Landschötzer, P., Lefèvre, N., Lenton, A., Lienert, S., Lombardozzi, D., Melton, J. R., Metzl, N., Millero, F., Monteiro, P. M. S., Munro, D. R., Nabel, J. E. M. S., Nakaoka, S.-I., OBrien, K., Olsen, A., Omar, A. M., Ono, T., Pierrot, D., Poulter, B., Rödenbeck, C., Salisbury, J., Schuster, U., Schwinger, J., Séférian, R., Skjelvan, I., Stocker, B. D., Sutton, A. J., Takahashi, T., Tian, H., Tilbrook, B., van der Laan-Luijkx, I. T., van der Werf, G. R., Viovy, N., Walker, A. P., Wiltshire, A. J., and Zaehle, S.: Global Carbon Budget 2016, Earth Syst. Sci. Data, 8, 605-649, https://doi.org/10.5194/essd-8-605-2016, 2016.
24. Liu, J., Fung, I., Kalnay, E., Kang, J.-S., Olsen, E. T., and Chen, L.: Simultaneous assimilation of AIRS Xco2 and meteorological observations in a carbon climate model with an ensemble Kalman filter, J. Geophys. Res., 117, D05309, https://doi.org/10.1029/2011JD016642, 2012.
25. Liu, Y.: CarbonTracker Switzerland: A high resolution Ensemble Kalman Filter System to constrain biospheric CO2 fluxes in central Europe, DISS. ETH NO. 23728, PhD thesis, ETH Zörich, Zörich, Switzerland, https://doi.org/10.3929/ethz-A-010893766, 2017.
26. ObsPack: Cooperative Global Atmospheric Data Integration Project, Multi-laboratory compilation of atmospheric carbon dioxide data for the period 1957-2015, obspack-co2-1-GLOBALVIEWplus-v2.1-2016-09-02, NOAA Earth System Research Laboratory, Global Monitoring Division, https://doi.org/10.15138/G3059Z, 2016.
27. Olson, J. S., Watts, J. A., and Allison, L. J.: MajorWorld Ecosystem Complexes Ranked by Carbon in Live Vegetation: A Database (NDP-017), Tech. rep., Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, https://doi.org/10.3334/CDIAC/lue.ndp017.2006, 2002.
28. Oney, B., Henne, S., Gruber, N., Leuenberger, M., Bamberger, I., Eugster, W., and Brunner, D.: The CarboCount CH sites: characterization of a dense greenhouse gas observation network, Atmos. Chem. Phys., 15, 11147-11164, https://doi.org/10.5194/acp-15-11147-2015, 2015.
29. Peters, W., Miller, J. B., Whitaker, J., Denning, A. S., Hirsch, A., Krol, M. C., Zupanski, D., Bruhwiler, L., and Tans, P. P.: An ensemble data assimilation system to estimate CO2 surface fluxes from atmospheric trace gas observations, J. Geophys. Res., 110, 1-18, https://doi.org/10.1029/2005JD006157, 2005.
30. Peters, W., Jacobson, A. R., Sweeney, C., Andrews, A. E., Conway, T. J., Masarie, K., Miller, J. B., Bruhwiler, L. M. P., Pétron, G., Hirsch, A. I., Worthy, D. E. J., van der Werf, G. R., Randerson, J. T., Wennberg, P. O., Krol, M. C., and Tans, P. P.: An atmospheric perspective on North American carbon dioxide exchange: CarbonTracker, P. Natl. Acad. Sci. USA, 104, 18925-18930, https://doi.org/10.1073/pnas.0708986104, 2007.
31. Peters, W., Krol, M. C., van der Werf, G. R., Houweling, S., Jones, C. D., Hughes, J., Schaefer, K., Masarie, K. A., Jacobson, A. R., Miller, J. B., Cho, C. H., Ramonet, M., Schmidt, M., Ciattaglia, L., Apadula, F., Heltai, D., Meinhardt, F., di Sarra, A. G., Piacentino, S., Sferlazzo, D., Aalto, T., Hatakka, J., Ström, J., Haszpra, L., Meijer, H. A. J., van der Laan, S., Neubert, R. E. M., Jordan, A., Rodó, X., Morguí, J.-A., Vermeulen, A. T., Popa, E., Rozanski, K., Zimnoch, M., Manning, A. C., Leuenberger, M., Uglietti, C., Dolman, A. J., Ciais, P., Heimann, M., and Tans, P. P.: Seven years of recent European net terrestrial carbon dioxide exchange constrained by atmospheric observations, Glob. Change Biol., 16, 1317-1337, https://doi.org/10.1111/j.1365-2486.2009.02078.x, 2010.
32. Peylin, P., Law, R. M., Gurney, K. R., Chevallier, F., Jacobson, A. R., Maki, T., Niwa, Y., Patra, P. K., Peters, W., Rayner, P. J., Rödenbeck, C., van der Laan-Luijkx, I. T., and Zhang, X.: Global atmospheric carbon budget: results from an ensemble of atmospheric CO2 inversions, Biogeosciences, 10, 6699-6720, https://doi.org/10.5194/bg-10-6699-2013, 2013.
33. Prather, M. J., Holmes, C. D., and Hsu, J.: Reactive greenhouse gas scenarios: systematic exploration of uncertainties and the role of atmospheric chemistry, Geophys. Res. Lett., 39, L09803, https://doi.org/10.1029/2012GL051440, 2012.
34. Prinn, R. G., Weiss, R. F., Miller, B. R., Huang, J., Alyea, F. N., Cunnold, D. M., Fraser, P. J., Hartley, D. E., and Simmonds, P. G.: Atmospheric trends and lifetime of CH3CCI3 and global OH concentrations, Science, 269, 187-192, https://doi.org/10.1126/science.269.5221.187, 1995.
35. Raeder, K., Anderson, J. L., Collins, N., Hoar, T. J., Kay, J. E., Lauritzen, P. H., and Pincus, R.: DART/CAM: An ensemble data assimilation system for CESM atmospheric models, J. Climate, 25, 6304-6317, https://doi.org/10.1175/JCLI-D-11-00395.1, 2012.
36. Reuter, M., Buchwitz, M., Hilker, M., Heymann, J., Schneising, O., Pillai, D., Bovensmann, H., Burrows, J. P., Bösch, H., Parker, R., Butz, A., Hasekamp, O., ODell, C. W., Yoshida, Y., Gerbig, C., Nehrkorn, T., Deutscher, N. M., Warneke, T., Notholt, J., Hase, F., Kivi, R., Sussmann, R., Machida, T., Matsueda, H., and Sawa, Y.: Satellite-inferred European carbon sink larger than expected, Atmos. Chem. Phys., 14, 13739-13753, https://doi.org/10.5194/acp-14-13739-2014, 2014.
37. Rödenbeck, C., Houweling, S., Gloor, M., and Heimann, M.: CO2 flux history 1982-2001 inferred from atmospheric data using a global inversion of atmospheric transport, Atmos. Chem. Phys., 3, 1919-1964, https://doi.org/10.5194/acp-3-1919-2003, 2003.
38. Thompson, R. L., Patra, P. K., Chevallier, F., Maksyutov, S., Law, R. M., Ziehn, T., van der Laan-Luijkx, I. T., Peters, W., Ganshin, A., Zhuravlev, R., Maki, T., Nakamura, T., Shirai, T., Ishizawa, M., Saeki, T., Machida, T., Poulter, B., Canadell, J. G., and Ciais, P.: Top-down assessment of the Asian carbon budget since the mid 1990s, Nat. Commun., 7, 10724, https://doi.org/10.1038/ncomms10724, 2016.
39. Tiedtke, M.: A comprehensive mass flux scheme for cumulus parameterization in large-scale models, Mon. Weather Rev., 117, 1779-1800, https://doi.org/10.1175/1520-0493(1989)1171779:ACMFSF2.0.CO;2, 1989.
40. Tremolet, Y., Hofstadler, A., and Deconinck, W.: OOPS as a common framework for research and Operations, ECMWF 14th Workshop on Meteorological Operational Systems, Reading, UK, 18-20 November, available at: https://www.ecmwf.int/en/elibrary/13852-oops-common-framework-research-And-operations (last access: 14 July 2017), 2013.
41. Tsuruta, A., Aalto, T., Backman, L., Peters, W., Krol, M., van der Laan-Luijkx, I. T., Hatakka, J., Heikkinen, P., Duglokencky, E. J., Spahni, R., and Paramonova, N. N.: Evaluating atmospheric methane inversion model results for Pallas, northern Finland, Boreal Environ. Res., 20, 506-525, 2015.
42. Tsuruta, A., Aalto, T., Backman, L., Hakkarainen, J., van der Laan-Luijkx, I. T., Krol, M. C., Spahni, R., Houweling, S., Laine, M., Dlugokencky, E., Gomez-Pelaez, A. J., van der Schoot, M., Langenfelds, R., Ellul, R., Arduini, J., Apadula, F., Gerbig, C., Feist, D. G., Kivi, R., Yoshida, Y., and Peters, W.: Global methane emission estimates for 2000-2012 from Carbon-Tracker Europe-CH4 v1.0, Geosci. Model Dev., 10, 1261-1289, https://doi.org/10.5194/gmd-10-1261-2017, 2017.
43. L. V., Domingues, L. G., Correia, C. S. C., Miller, J. B., Gloor, M., van Leeuwen, T. T., Kaiser, J. W., Wiedinmyer, C., Basu, S., Clerbaux, C., and Peters, W.: Response of the Amazon carbon balance to the 2010 drought derived with Carbon-Tracker South America, Global Biogeochem. Cy., 29, 1092 1108, https://doi.org/10.1002/2014GB005082, 2015.
44. van der Veen, E.: Optimizing transport properties in TM5 using SF6, Masters thesis, Wageningen University, University of Twente, Enschede, the Netherlands, available at: http://essay. utwente.nl/65459/(last access: 14 July 2017), 2013.
45. van der Velde, I. R.: Studying biosphere-Atmosphere exchange of CO2 through Carbon-13 stable isotopes, PhD thesis, Wageningen University, Wageningen, the Netherlands, 2015.
46. van der Velde, I. R., Miller, J. B., Schaefer, K., van der Werf, G. R., Krol, M. C., and Peters, W.: Terrestrial cycling of 13CO2 by photosynthesis, respiration, and biomass burning in SiBCASA, Biogeosciences, 11, 6553-6571, https://doi.org/10.5194/bg-11-6553-2014, 2014.
47. van der Velde, I. R., Miller, J. B., van der Molen, M. K., Tans, P. P., Vaughn, B. H., White, J. W. C., Schaefer, K., and Peters, W.: A multi-species data assimilation system to retrieve information on land-Atmosphere exchange processes, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2017-84, in review, 2017.
48. van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Kasibhatla, P. S., and Arellano Jr., A. F.: Interannual variability in global biomass burning emissions from 1997 to 2004, Atmos. Chem. Phys., 6, 3423-3441, https://doi.org/10.5194/acp-6-3423-2006, 2006.
49. van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Mu, M., Kasibhatla, P. S., Morton, D. C., DeFries, R. S., Jin, Y., and van Leeuwen, T. T.: Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997-2009), Atmos. Chem. Phys., 10, 11707-11735, https://doi.org/10.5194/acp-10-11707-2010, 2010.
50. Wolf, S., Keenan, T. F., Fisher, J. B., Baldocchi, D. D., Desai, A. R., Richardson, A. D., Scott, R. L., Law, B. E., Litvak, M. E., Brunsell, N. A., Peters, W., and van der Laan-Luijkx, I. T.: Warm spring reduced carbon cycle impact of the 2012 US summer drought, P. Natl. Acad. Sci. USA, 113, 5880-5885, https://doi.org/10.1073/pnas.1519620113, 2016.
51. Zhang, H. F., Chen, B. Z., van der Laan-Luijkx, I. T., Chen, J., Xu, G., Yan, J. W., Zhou, L. X., Fukuyama, Y., Tans, P. P., and Peters, W.: Net terrestrial CO2 exchange over China during 2001-2010 estimated with an ensemble data assimilation system for atmospheric CO2, J. Geophys. Res., 119, 3500-3515, https://doi.org/10.1002/2013JD021297, 2014a.
52. Zhang, H. F., Chen, B. Z., van der Laan-Luijk, I. T., Machida, T., Matsueda, H., Sawa, Y., Fukuyama, Y., Langenfelds, R., van der Schoot, M., Xu, G., Yan, J. W., Cheng, M. L., Zhou, L. X., Tans, P. P., and Peters, W.: Estimating Asian terrestrial carbon fluxes from CONTRAIL aircraft and surface CO2 observations for the period 2006-2010, Atmos. Chem. Phys., 14, 5807-5824, https://doi.org/10.5194/acp-14-5807-2014, 2014b.
53. Zupanski, D., Denning, A. S., Uliasz, M., Zupanski, M., Schuh, A. E., Rayner, P. J., Peters, W., and Corbin, K. D.: Carbon flux bias estimation employing Maximum Likelihood Ensemble Filter (MLEF), J. Geophys. Res., 112, D17107, https://doi.org/10.1029/2006JD008371, 2007. Geosci. Model