[{"type":"article-journal","title":"PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model","issued":{"date-parts":[["2019"]]},"volume":"11","issue":"7","page":"2130-2162","container-title":"Journal of advances in modeling earth systems","DOI":"10.1029\/2018MS001574","author":[{"family":"Bechtold","given":"M."},{"family":"De Lannoy","given":"G. J. M."},{"family":"Koster","given":"R. D."},{"family":"Reichle","given":"R. H."},{"family":"Mahanama","given":"S. P."},{"family":"Bleuten","given":"W."},{"family":"Bourgault","given":"M. A."},{"family":"Br\u00fcmmer","given":"C."},{"family":"Burdun","given":"I."},{"family":"Desai","given":"A. R."},{"family":"Devito","given":"K."},{"family":"Gr\u00fcnwald","given":"T."},{"family":"Grygoruk","given":"M."},{"family":"Humphreys","given":"E. R."},{"family":"Klatt","given":"J."},{"family":"Kurbatova","given":"J."},{"family":"Lohila","given":"A."},{"family":"Munir","given":"T. M."},{"family":"Nilsson","given":"M. B."},{"family":"Price","given":"J. S."},{"family":"R\u00f6hl","given":"M."},{"family":"Schneider","given":"A."},{"family":"Tiemeyer","given":"B."}],"publisher":"American Geophysical Union (AGU)","ISSN":"1942-2466","abstract":"Peatlands are poorly represented in global Earth system modeling frameworks. Here we add a peatland\u2010specific land surface hydrology module (PEAT\u2010CLSM) to the Catchment Land Surface Model (CLSM) of the NASA Goddard Earth Observing System (GEOS) framework. The amended TOPMODEL approach of the original CLSM that uses topography characteristics to model catchment processes is discarded, and a peatland\u2010specific model concept is realized in its place. To facilitate its utilization in operational GEOS efforts, PEAT\u2010CLSM uses the basic structure of CLSM and the same global input data. Parameters used in PEAT\u2010CLSM are based on literature data. A suite of CLSM and PEAT\u2010CLSM simulations for peatland areas between 40\u00b0N and 75\u00b0N is presented and evaluated against a newly compiled data set of groundwater table depth and eddy covariance observations of latent and sensible heat fluxes in natural and seminatural peatlands. CLSM's simulated groundwater tables are too deep and variable, whereas PEAT\u2010CLSM simulates a mean groundwater table depth of \u22120.20 m (snow\u2010free unfrozen period) with moderate temporal fluctuations (standard deviation of 0.10 m), in significantly better agreement with in situ observations. Relative to an operational CLSM version that simply includes peat as a soil class, the temporal correlation coefficient is increased on average by 0.16 and reaches 0.64 for bogs and 0.66 for fens when driven with global atmospheric forcing data. In PEAT\u2010CLSM, runoff is increased on average by 38% and evapotranspiration is reduced by 19%. The evapotranspiration reduction constitutes a significant improvement relative to eddy covariance measurements.","kit-publication-id":"1000096687"}]