The effect of assimilating satellite-derived soil moisture data in SiBCASA on simulated carbon fluxes in Boreal Eurasia

Hydrology and Earth System Sciences

Volumn 20, Issue 2, 2016, Pages 605-624

  Van Der Molen, M K ^a   De Jeu, R A M ^b,c   Wagner, W ^d   Van Der Velde, I R ^a   Kolari, P ^e   Kurbatova, J ^f   Varlagin, A ^f   Maximov, T C ^g   Kononov, A V ^g   Ohta, T ^h   Kotani, A ^h   Krol, M C ^a   Peters, W ^a,i  

^a WAGENINGEN UNIVERSITY   (Netherlands)

^b VU UNIVERSITY AMSTERDAM   (Netherlands)

^c Transmissivity B V   (Netherlands)

^d VIENNA UNIVERSITY OF TECHNOLOGY   (Austria)

^e UNIVERSITY OF HELSINKI   (Finland)

^f SEVERTSOV INSTITUTE OF ECOLOGY AND EVOLUTION   (Russian Federation)

^g INSTITUTE FOR BIOLOGICAL PROBLEMS OF CRYOLITHOZONE   (Russian Federation)

^h NAGOYA UNIVERSITY   (Japan)

ⁱ UNIVERSITY OF GRONINGEN   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

DROUGHT; MOISTURE; SATELLITES; SOIL SURVEYS; SOILS; VEGETATION;

CARBON CYCLES; CARBON FLUXES; GLOBAL CARBON CYCLE; INTERANNUAL VARIATION; PASSIVE MICROWAVES; SITU SOIL MOISTURES; SUMMER MONTHS; VEGETATION MODEL;

SOIL MOISTURE;

ANNUAL VARIATION; ASCAT; BIOMASS; CARBON FIXATION; CARBON FLUX; DROUGHT; GLOBAL PERSPECTIVE; IN SITU MEASUREMENT; NUMERICAL MODEL; SOIL MOISTURE; VEGETATION COVER;

EURASIA; EUROPE;

EID: 84957600528     PISSN: 10275606     EISSN: 16077938     Source Type: Journal    
DOI: 10.5194/hess-20-605-2016     Document Type: Article

References (78)

1. Baldocchi, D., Falge, E., Gu, L. H., Olson, R., Hollinger, D., Running, S., Anthoni, P., Bernhofer, C., Davis, K., Evans, R., Fuentes, J., Goldstein, A., Katul, G., Law, B., Lee, X. H., Malhi, Y., Meyers, T., Munger, W., Oechel, W., U, K. T. P., Pilegaard, K., Schmid, H. P., Valentini, R., Verma, S., Vesala, T., Wilson, K., and Wofsy, S.: FLUXNET: A new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor, and energy flux densities, B. Am. Meteorol. Soc., 82, 2415-2434, 2001.
2. Bartalis, Z., Wagner, W., Naeimi, V., Hasenauer, S., Scipal, K., Bonekamp, H., Figa, J., and Anderson, C.: Initial soil moisture retrievals from the METOP-A Advanced Scatterometer (ASCAT), Geophys. Res. Lett., 34, L20401, doi:10.1029/2007gl031088, 2007.
3. Champagne, C., Berg, A., Belanger, J., McNairn, H., and De Jeu, R.: Evaluation of soil moisture derived from passive microwave remote sensing over agricultural sites in Canada using groundbased soil moisture monitoring networks, Int. J. Remote Sens., 31, 3669-3690, doi:10.1080/01431161.2010.483485, 2010.
4. Chen, Y., Yang, K., Qin, J., Zhao, L., Tang, W., and Han, M.: Evaluation of AMSR-E retrievals and GLDAS simulations against observations of a soil moisture network on the central Tibetan Plateau, J. Geophys. Res.-Atmos., 118, 4466-4475, doi:10.1002/jgrd.50301, 2013.
5. Ciais, P., Reichstein, M., Viovy, N., Granier, A., Ogee, J., Allard, V., Aubinet, M., Buchmann, N., Bernhofer, C., Carrara, A., Chevallier, F., De Noblet, N., Friend, A. D., Friedlingstein, P., Grunwald, T., Heinesch, B., Keronen, P., Knohl, A., Krinner, G., Loustau, D., Manca, G., Matteucci, G., Miglietta, F., Ourcival, J. M., Papale, D., Pilegaard, K., Rambal, S., Seufert, G., Soussana, J. F., Sanz, M. J., Schulze, E. D., Vesala, T., and Valentini, R.: Europe-wide reduction in primary productivity caused by the heat and drought in 2003, Nature, 437, 529-533, doi:10.1038/nature03972, 2005.
6. Collatz, G. J., Ball, J. T., Grivet, C., and Berry, J. A.: Physiological and environmental regulation of stomatal conductance, photosynthesis and transpiration: a model that includes a laminar boundary layer, Agr. Forest Meteorol., 54, 107-136, 1991.
7. Dai, A.: Drought under global warming: A review, Wiley Interdisciplinary Reviews: Climate Change, 2, 45-65, doi:10.1002/wcc.81, 2011.
8. De Jeu, R. A. M. and Owe, M.: Further validation of a new methodology for surface moisture and vegetation optical depth retrieval, Int. J. Remote Sens., 24, 4559-4578, doi:10.1080/0143116031000095934, 2003.
9. de Jeu, R. A. M., Wagner, W., Holmes, T., Dolman, A., van de Giesen, N., and Friesen, J.: Global Soil Moisture Patterns Observed by Space Borne Microwave Radiometers and Scatterometers, Surv. Geophys., 29, 399-420, doi:10.1007/s10712-008- 9044-0, 2008.
10. De Jeu, R. A. M., Holmes, T. R. H., Panciera, R., and Walker, J. P.: Parameterization of the land parameter retrieval model for L-band observations using the NAFE'05 data set, IEEE Geosci. Remote Sens. Lett., 6, 630-634, doi:10.1109/lgrs.2009.2019607, 2009.
11. de Wit, A. J. W. and van Diepen, C. A.: Crop model data assimilation with the Ensemble Kalman filter for improving regional crop yield forecasts, Agr. Forest Meteorol., 146, 38-56, doi:10.1016/j.agrformet.2007.05.004, 2007.
12. Dolman, A. J., Maximov, T. C., Moors, E. J., Maximov, A. P., Elbers, J. A., Kononov, A. V., Waterloo, M. J., and van der Molen, M. K.: Net ecosystem exchange of carbon dioxide and water of far eastern Siberian Larch (Larix cajanderii) on permafrost, Biogeosciences, 1, 133-146, doi:10.5194/bg-1-133-2004, 2004.
13. Dolman, A. J., Shvidenko, A., Schepaschenko, D., Ciais, P., Tchebakova, N., Chen, T., van der Molen, M. K., Belelli Marchesini, L., Maximov, T. C., Maksyutov, S., and Schulze, E.-D.: An estimate of the terrestrial carbon budget of Russia using inventory-based, eddy covariance and inversion methods, Biogeosciences, 9, 5323-5340, doi:10.5194/bg-9-5323-2012, 2012.
14. Draper, C. S., Mahfouf, J. F., and Walker, J. P.: An EKF assimilation of AMSR-E soil moisture into the ISBA land surface scheme, J. Geophys. Res.-Atmos., 114, D20104, doi:10.1029/2008jd011650, 2009a.
15. Draper, C. S., Walker, J. P., Steinle, P. J., de Jeu, R. A. M., and Holmes, T. R. H.: An evaluation of AMSR-E derived soil moisture over Australia, Remote Sens. Environ., 113, 703-710, doi:10.1016/j.rse.2008.11.011, 2009b.
16. Entekhabi, D., Njoku, E. G., O'Neill, P. E., Kellogg, K. H., Crow, W. T., Edelstein, W. N., Entin, J. K., Goodman, S. D., Jackson, T. J., Johnson, J., Kimball, J., Piepmeier, J. R., Koster, R. D., Martin, N., McDonald, K. C., Moghaddam, M., Moran, S., Reichle, R., Shi, J. C., Spencer, M. W., Thurman, S. W., Tsang, L., and Van Zyl, J.: The soil moisture active passive (SMAP) mission, Proc. IEEE, 98, 704-716, doi:10.1109/jproc.2010.2043918, 2010.
17. Farquhar, G. D. von Caemmerer, S., and Berry, J. A.: A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species, Planta, 149, 78-90, doi:10.1007/bf00386231, 1980.
18. Goetz, S. J., MacK, M. C., Gurney, K. R., Randerson, J. T., and Houghton, R. A.: Ecosystem responses to recent climate change and fire disturbance at northern high latitudes: Observations and model results contrasting northern Eurasia and North America, Environ. Res. Lett., 2, 045031, doi:10.1088/1748- 9326/2/4/045031, 2007.
19. Griesfeller, A., Lahoz, W. A., d. Jeu, R. A. M., Dorigo, W., Haugen, L. E., Svendby, T. M., and Wagner, W.: Evaluation of satellite soil moisture products over Norway using ground-based observations, Int. J. Appl. Earth Obs. Geoinf., 45, 155-164, doi:10.1016/j.jag.2015.04.016, 2016.
20. Han, E., Crow, W. T., Holmes, T., and Bolten, J.: Benchmarking a soil moisture data assimilation system for agricultural drought monitoring, J. Hydrometeorol., 15, 1117-1134, doi:10.1175/jhm-d-13-0125.1, 2014.
21. Högström, E., Trofaier, A., Gouttevin, I., and Bartsch, A.: Assessing Seasonal Backscatter Variations with Respect to Uncertainties in Soil Moisture Retrieval in Siberian Tundra Regions, Remote Sensing, 6, 8718-8738, 2014.
22. Ilvesniemi, H., Pumpanen, J., Duursma, R., Hari, P., Keronen, P., Kolari, P., Kulmala, M., Mammarella, I., Nikinmaa, E., Rannik, Ü., Pohja, T., Siivola, E., and Vesala, T.: Water balance of a boreal scots pine forest, Boreal Environ. Res., 15, 375-396, 2010.
23. Imaoka, K., Kachi, M., Fujii, H., Murakami, H., Hori, M., Ono, A., Igarashi, T., Nakagawa, K., Oki, T., Honda, Y., and Shimoda, H.: Global change observation mission (GCOM) for monitoring carbon, water cycles, and climate change, Proc, IEEE, 98, 717- 734, doi:10.1109/jproc.2009.2036869, 2010.
24. Jafarov, E. and Schaefer, K.: The importance of a surface organic layer in simulating permafrost thermal and carbon dynamics, The Cryosphere Discuss., 9, 3137-3163, doi:10.5194/tcd-9- 3137-2015, 2015.
25. Katul, G., Manzoni, S., Palmroth, S., and Oren, R.: A stomatal optimization theory to describe the effects of atmospheric CO2 on leaf photosynthesis and transpiration, Ann. Bot., 105, 431-442, doi:10.1093/aob/mcp292, 2010.
26. Kerr, Y. H., Waldteufel, P., Wigneron, J. P., Martinuzzi, J. M., Font, J., and Berger, M.: Soil moisture retrieval from space: The Soil Moisture and Ocean Salinity (SMOS) mission, IEEE T. Geosci. Remote Sens., 39, 1729-1735, doi:10.1109/36.942551, 2001.
27. Kolari, P., Kulmala, L., Pumpanen, J., Launiainen, S., Llvesniemi, H., Hari, P., and Nikinmaa, E.: CO2 exchange and component CO2 fluxes of a boreal Scots pine forest, Boreal Environ. Res., 14, 761-783, 2009.
28. Kotani, A., Kononov, A. V., Ohta, T., and Maximov, T. C.: Temporal variations in the linkage between the net ecosystem exchange of water vapour and CO2 over boreal forests in eastern Siberia, Ecohydrology, 7, 209-225, 2014.
29. Krol, M. C., Peters, W., Hooghiemstra, P., George, M., Clerbaux, C., Hurtmans, D., McInerney, D., Sedano, F., Bergamaschi, P., El Hajj, M., Kaiser, J. W., Fisher, D., Yershov, V., and Muller, J. P.: How much CO was emitted by the 2010 fires around Moscow?, Atmos. Chem. Phys., 13, 4737-4747, doi:10.5194/acp-13-4737- 2013, 2013.
30. Kurbatova, J., Li, C., Varlagin, A., Xiao, X., and Vygodskaya, N.: Modeling carbon dynamics in two adjacent spruce forests with different soil conditions in Russia, Biogeosciences, 5, 969-980, doi:10.5194/bg-5-969-2008, 2008.
31. Liu, Y. Y., van Dijk, A., de Jeu, R. A. M., and Holmes, T. R. H.: An analysis of spatiotemporal variations of soil and vegetation moisture from a 29-year satellite-derived data set over mainland Australia, Water Resour. Res., 45, W07405, doi:10.1029/2008wr007187, 2009.
32. Liu, Y. Y., Parinussa, R. M., Dorigo, W. A., De Jeu, R. A. M., Wagner, W., M. Van Dijk, A. I. J., McCabe, M. F., and Evans, J. P.: Developing an improved soil moisture dataset by blending passive and active microwave satellite-based retrievals, Hydrol. Earth Syst. Sci., 15, 425-436, doi:10.5194/hess-15-425-2011, 2011.
33. Liu, Y. Y., Dorigo, W. A., Parinussa, R. M., De Jeu, R. A. M., Wagner, W., McCabe, M. F., Evans, J. P., and Van Dijk, A. I. J. M.: Trend-preserving blending of passive and active microwave soil moisture retrievals, Remote Sens. Environ., 123, 280-297, doi:10.1016/j.rse.2012.03.014, 2012.
34. Mammarella, I., Launiainen, S., Gronholm, T., Keronen, P., Pumpanen, J., Rannik, Ü., and Vesala, T.: Relative humidity effect on the high-frequency attenuation of water vapor flux measured by a closed-path eddy covariance system, J. Atmos. Ocean. Tech., 26, 1856-1866, doi:10.1175/2009jtecha1179.1, 2009.
35. McGuire, A. D., Anderson, L. G., Christensen, T. R., Scott, D., Laodong, G., Hayes, D. J., Martin, H., Lorenson, T. D., Macdonald, R. W., and Nigel, R.: Sensitivity of the carbon cycle in the Arctic to climate change, Ecol. Monogr., 79, 523-555, doi:10.1890/08-2025.1, 2009.
36. Milyukova, I. M., Kolle, O., Varlagin, A. V., Vygodskaya, N. N., Schulze, E. D., and Lloyd, J.: Carbon balance of a southern taiga spruce stand in European Russia, Tellus B, 54, 429-442, doi:10.1034/j.1600-0889.2002.01387.x, 2002.
37. Miralles, D. G.: Evaporation in the global water cycle: Analysing land evaporation using satellite observations PhD, Department of Hydrology and Geo-Environmental Sciences, VU University Amsterdam, Amsterdam, 126 pp., 2011.
38. Miralles, D. G., De Jeu, R. A. M., Gash, J. H., Holmes, T. R. H., and Dolman, A. J.: Magnitude and variability of land evaporation and its components at the global scale, Hydrol. Earth Syst. Sci., 15, 967-981, doi:10.5194/hess-15-967-2011, 2011a.
39. Miralles, D. G., Holmes, T. R. H., De Jeu, R. A. M., Gash, J. H., Meesters, A. G. C. A., and Dolman, A. J.: Global land-surface evaporation estimated from satellite-based observations, Hydrol. Earth Syst. Sci., 15, 453-469, doi:10.5194/hess-15-453-2011, 2011b.
40. Miralles, D. G., Teuling, A. J., Van Heerwaarden, C. C., and De Arellano, J. V. G.: Mega-heatwave temperatures due to combined soil desiccation and atmospheric heat accumulation, Nat. Geosci., 7, 345-349, doi:10.1038/ngeo2141, 2014.
41. Mittelbach, H. and Seneviratne, S. I.: A new perspective on the spatio-temporal variability of soil moisture: temporal dynamics versus time-invariant contributions, Hydrol. Earth Syst. Sci., 16, 2169-2179, doi:10.5194/hess-16-2169-2012, 2012.
42. Mladenova, I. E., Jackson, T. J., Njoku, E., Bindlish, R., Chan, S., Cosh, M. H., Holmes, T. R. H., de Jeu, R. A. M., Jones, L., Kimball, J., Paloscia, S., and Santi, E.: Remote monitoring of soil moisture using passive microwave-based techniques - Theoretical basis and overview of selected algorithms for AMSR-E, Remote Sens. Environ., 144, 197-213, doi:10.1016/j.rse.2014.01.013, 2014.
43. Moffat, A. M., Papale, D., Reichstein, M., Hollinger, D. Y., Richardson, A. D., Barr, A. G., Beckstein, C., Braswell, B. H., Churkina, G., Desai, A. R., Falge, E., Gove, J. H., Heimann, M., Hui, D., Jarvis, A. J., Kattge, J., Noormets, A., and Stauch, V. J.: Comprehensive comparison of gap-filling techniques for eddy covariance net carbon fluxes, Agr. Forest Meteorol., 147, 209-232, doi:10.1016/j.agrformet.2007.08.011, 2007.
44. Morales, P., Sykes, M. T., Prentice, I. C., Smith, P., Smith, B., Bugmann, H., Zierl, B., Friedlingstein, P., Viovy, N., Sabaté, S., Sánchez, A., Pla, E., Gracia, C. A., Sitch, S., Arneth, A., and Ogee, J.: Comparing and evaluating process-based ecosystem model predictions of carbon and water fluxes in major European forest biomes, Global Change Biol., 11, 2211-2233, doi:10.1111/j.1365-2486.2005.01036.x, 2005.
45. Muskett, R. R. and Romanovsky, V. E.: Groundwater storage changes in arctic permafrost watersheds from GRACE and insitu measurements, Environ. Res. Lett., 4, 045009, doi:10.1088/1748-9326/4/4/045009, 2009.
46. Naeimi, V., Scipal, K., Bartalis, Z., Hasenauer, S., and Wagner, W.: An Improved Soil Moisture Retrieval Algorithm for ERS and METOP Scatterometer Observations, IEEE T. Geosci. Remote, 47, 1999-2013, doi:10.1109/tgrs.2008.2011617, 2009.
47. Naeimi, V., Paulik, C., Bartsch, A., Wagner, W., Kidd, R., Park, S. E., Elger, K., and Boike, J.: ASCAT surface state flag (SSF): Extracting information on surface freeze/thaw conditions from backscatter data using an empirical threshold-analysis algorithm, IEEE T. Geosci. Remote, 50, 2566-2582, doi:10.1109/tgrs.2011.2177667, 2012a.
48. Naeimi, V., Paulik, C., Bartsch, A., Wagner, W., Kidd, R., Sang-Eun, P., Elger, K., and Boike, J.: ASCAT Surface State Flag (SSF): Extracting Information on Surface Freeze/Thaw Conditions From Backscatter Data Using an Empirical Threshold-Analysis Algorithm, IEEE T. Geosci. Remote, 50, 2566-2582, doi:10.1109/tgrs.2011.2177667, 2012b.
49. Ohta, T., Maximov, T. C., Dolman, A. J., Nakai, T., Molen, M. K. v. d., Kononov, A. V., Maximov, T., Hiyama, T., Iijima, Y., Moors, E. J., and Tanaka, H.: Interannual variation of water balance and summer evapotranspiration in an eastern Siberian larch forest over a 7-year period (1998-2006), Agr. Forest Meteorol., 148, 1941-1953, 2008.
50. Ohta, T., Kotani, A., Iijima, Y., Maximov, T. C., Ito, S., Hanamura, M., Kononov, A. V., and Maximov, A. P.: Effects of waterlogging on water and carbon dioxide fluxes and environmental variables in a Siberian larch forest, 1998-2011, Agr. Forest Meteorol., 188, 64-75, doi:10.1016/j.agrformet.2013.12.012, 2014.
51. Oki, T., Imaoka, K., and Kachi, M.: AMSR instruments on GCOMW1/ 2: Concepts and applications, International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, Hawaii, USA, 1363-1366, 2010.
52. Owe, M., de Jeu, R., and Holmes, T.: Multisensor historical climatology of satellite-derived global land surface moisture, J. Geophys. Res.-Earth, 113, F01002, doi:10.1029/2007JF000769, 2008.
53. Papale, D., Reichstein, M., Aubinet, M., Canfora, E., Bernhofer, C., Kutsch, W., Longdoz, B., Rambal, S., Valentini, R., Vesala, T., and Yakir, D.: Towards a standardized processing of Net Ecosystem Exchange measured with eddy covariance technique: algorithms and uncertainty estimation, Biogeosciences, 3, 571-583, doi:10.5194/bg-3-571-2006, 2006.
54. Peters, W., Jacobson, A. R., Sweeney, C., Andrews, A. E., Conway, T. J., Masarie, K., Miller, J. B., Bruhwiler, L. M. P., Petron, 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, doi:10.1073/pnas.0708986104, 2007.
55. 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., Helta, D., Meinhardt, F., di Sarra, A. G., Piacentino, S., Sferlazzo, D., Aalto, T., Hatakka, J., Strom, J., Haszpra, L., Meijer, H. A. J., van de Laan, S., Neubert, R. E. M., Jordan, A., Rodo, X., Morgui, 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, Global Change Biol., 16, 1317-1337, doi:10.1111/j.1365- 2486.2009.02078.x, 2010.
56. Potter, C. S., Randerson, J. T., Field, C. B., Matson, P. A., Vitousek, P. M., Mooney, H. A., and Klooster, S. A.: Terrestrial ecosystem production: A process model based on global satellite and surface data, Global Biogeochem. Cy., 7, 811-841, doi:10.1029/93gb02725, 1993.
57. Raich, J. W., Rastetter, E. B., Melillo, J. M., Kicklighter, D. W., Steudler, P. A., Peterson, B. J., Grace, A. L., Iii, B. M., and Vörösmarty, C. J.: Potential Net Primary Productivity in South America: Application of a Global Model, Ecol. Appl., 1, 399-429, doi:10.2307/1941899, 1991.
58. Rannik, U., Keronen, P., Hari, P., and Vesala, T.: Estimation of forest-atmosphere CO2 exchange by eddy covariance and profile techniques, Agr. Forest Meteorol., 126, 141-155, doi:10.1016/j.agrformet.2004.06.010, 2004.
59. Reichle, R. H. and Koster, R. D.: Bias reduction in short records of satellite soil moisture, Geophys. Res. Lett., 31, L19501, doi:10.1029/2004gl020938, 2004.
60. Reichle, R. H., and Koster, R. D.: Global assimilation of satellite surface soil moisture retrievals into the NASA catchment land surface model, Geophys. Res. Lett., 32, 1-4, doi:10.1029/2004gl021700, 2005.
61. Reichle, R. H., Koster, R. D., Liu, P., Mahanama, S. P. P., Njoku, E. G., and Owe, M.: Comparison and assimilation of global soil moisture retrievals from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E) and the Scanning Multichannel Microwave Radiometer (SMMR), J. Geophys. Res.-Atmos., 112, D09108, doi:10.1029/2006jd008033, 2007.
62. Reichstein, M., Falge, E., Baldocchi, D., Papale, D., Aubinet, M., Berbigier, P., Bernhofer, C., Buchmann, N., Gilmanov, T., Granier, A., Grünwald, T., Havránková, K., Ilvesniemi, H., Janous, D., Knohl, A., Laurila, T., Lohila, A., Loustau, D., Matteucci, G., Meyers, T., Miglietta, F., Ourcival, J. M., Pumpanen, J., Rambal, S., Rotenberg, E., Sanz, M., Tenhunen, J., Seufert, G., Vaccari, F., Vesala, T., Yakir, D., and Valentini, R.: On the separation of net ecosystem exchange into assimilation and ecosystem respiration: Review and improved algorithm, Global Change Biol., 11, 1424-1439, doi:10.1111/j.1365-2486.2005.001002.x, 2005.
63. Reichstein, M., Ciais, P., Papale, D., Valentini, R., Running, S., Viovy, N., Cramer, W., Granier, A., Ogee, J., Allard, V., Aubinet, M., Bernhofer, C., Buchmann, N., Carrara, A., Grunwald, T., Heimann, M., Heinesch, B., Knohl, A., Kutsch, W., Loustau, D., Manca, G., Matteucci, G., Miglietta, F., Ourcival, J. M., Pilegaard, K., Pumpanen, J., Rambal, S., Schaphoff, S., Seufert, G., Soussana, J. F., Sanz, M. J., Vesala, T., and Zhao, M.: Reduction of ecosystem productivity and respiration during the European summer 2003 climate anomaly: a joint flux tower, remote sensing and modelling analysis, Global Change Biol., 13, 634-651, doi:10.1111/j.1365-2486.2006.01224.x, 2007.
64. Robock, A., Vinnikov, K. Y., Srinivasan, G., Entin, J. K., Hollinger, S. E., Speranskaya, N. A., Liu, S., and Namkhai, A.: The Global Soil Moisture Data Bank, B. Am. Meteorol. Soc., 81, 1281-1299, 2000.
65. Schaefer, K., Collatz, G. J., Tans, P., Denning, A. S., Baker, I., Berry, J., Prihodko, L., Suits, N., and Philpott, A.: Combined simple biosphere/carnegie-ames-stanford approach terrestrial carbon cycle model, J. Geophys. Res.-Biogeo., 113, G03034, doi:10.1029/2007jg000603, 2008.
66. Schepaschenko, D. G., Mukhortova, L. V., Shvidenko, A. Z., and Vedrova, E. F.: The pool of organic carbon in the soils of Russia, Eurasian Soil Sci., 46, 107-116, doi:10.1134/s1064229313020129, 2013.
67. Sellers, P. J., Randall, D. A., Collatz, G. J., Berry, J. A., Field, C. B., Dazlich, D. A., Zhang, C., Collelo, G. D., and Bounoua, L.: A revised land surface parameterization (SiB2) for atmospheric GCMs. Part I: Model formulation, J. Climate, 9, 676-705, 1996.
68. Tarnocai, C., Canadell, J. G., Schuur, E. A. G., Kuhry, P., Mazhitova, G., and Zimov, S. C. G.: Soil organic carbon pools in the northern circumpolar permafrost region, Global Biogeochem. Cy., 23, GB2023, doi:10.1029/2008gb003327, 2009.
69. van der Molen, M. K., Dolman, A. J., Ciais, P., Eglin, T., Gobron, N., Law, B. E., Meir, P., Peters, W., Phillips, O. L., Reichstein, M., Chen, T., Dekker, S. C., Doubková, M., Friedl, M. A., Jung, M., van den Hurk, B. J. J. M., de Jeu, R. A. M., Kruijt, B., Ohta, T., Rebel, K. T., Plummer, S., Seneviratne, S. I., Sitch, S., Teuling, A. J., van der Werf, G. R., and Wang, G.: Drought and ecosystem carbon cycling, Agr. Forest Meteorol., 151, 765-773, 2011.
70. 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, doi:10.5194/bg-11-6553-2014, 2014.
71. Verhoef, A. and Egea, G.: Modeling plant transpiration under limited soil water: Comparison of different plant and soil hydraulic parameterizations and preliminary implications for their use in land surface models, Agr. Forest Meteorol., 191, 22-32, doi:10.1016/j.agrformet.2014.02.009, 2014.
72. Verstraeten, W. W., Veroustraete, F., Wagner, W., van Roey, T., Heyns, W., Verbeiren, S., and Feyen, J.: Remotely sensed soil moisture integration in an ecosystem carbon flux model. The spatial implication, Climatic Change, 103, 117-136, doi:10.1007/s10584-010-9920-8, 2010.
73. Vetter, M., Churkina, G., Jung, M., Reichstein, M., Zaehle, S., Bondeau, A., Chen, Y., Ciais, P., Feser, F., Freibauer, A., Geyer, R., Jones, C., Papale, D., Tenhunen, J., Tomelleri, E., Trusilova, K., Viovy, N., and Heimann, M.: Analyzing the causes and spatial pattern of the European 2003 carbon flux anomaly using seven models, Biogeosciences, 5, 561-583, doi:10.5194/bg-5- 561-2008, 2008.
74. Vey, S., Steffen, H., Müller, J., and Boike, J.: Inter-annual water mass variations from GRACE in central Siberia, J. Geodesy, 87, 287-299, doi:10.1007/s00190-012-0597-9, 2013.
75. Wagner, W., Lemoine, G., and Rott, H.: A method for estimating soil moisture from ERS Scatterometer and soil data, Remote Sens. Environ., 70, 191-207, doi:10.1016/s0034- 4257(99)00036-x, 1999.
76. Way, J., Zimmermann, R., Rignot, E., McDonald, K., and Oren, R.: Winter and spring thaw as observed with imaging radar at BOREAS, J. Geophys. Res.-Atmos., 102, 29673-29684, doi:10.1029/96jd03878, 1997.
77. Wegmüller, U.: The effect of freezing and thawing on the microwave signatures of bare soil, Remote Sens. Environ., 33, 123-135, doi:10.1016/0034-4257(90)90038-N, 1990.
78. Williams, M., Richardson, A. D., Reichstein, M., Stoy, P. C., Peylin, P., Verbeeck, H., Carvalhais, N., Jung, M., Hollinger, D. Y., Kattge, J., Leuning, R., Luo, Y., Tomelleri, E., Trudinger, C. M., and Wang, Y. -P.: Improving land surface models with FLUXNET data, Biogeosciences, 6, 1341-1359, doi:10.5194/bg-6-1341-2009, 2009.