Publications

Technical Memoranda

  • Endsley K.A., J. S. Kimball, T. Kundig, R. H. Reichle, J. V. Ardizzone, (2026). Validation Assessment for the Soil Moisture Active Passive (SMAP) Level 4 Carbon (L4_C) Data Product Version 8. NASA/TM‒20260000965. Vol. 66, 46pp

  • Endsley K.A., J. S. Kimball, T, Kundig, R. H. Reichle, J. V. Ardizzone, (2023). Validation Assessment for the Soil Moisture Active Passive (SMAP) Level 4 Carbon (L4_C) Data Product Version 7. NASA/TM-2023-104606. Vol. 65, 56pp

  • Reichle R. H., Q. Liu, J. V. Ardizzone, M. Bechtold, W. T. Crow, G. J. M. De Lannoy, J. S. Kimball, R. D. Koster, (2023). Soil Moisture Active Passive (SMAP) Project Assessment Report for Version 7 of the L4_SM Data Product. NASA/TM-2023-104606. Vol. 64, 91pp

  • Kemppinen O., P. R. Colarco, P. Castellanos, (2022). GEOS aerosol optical table calculation package GEOSmie. NASA/TM-2023-104606. Vol. 63, 81pp

  • Chang Y., S. Schubert, R. Koster, A. Molod, Y.-K. Lim, (2022). Climate Characteristics of the Atmospheric Analysis Increments from the GEOS S2S V3 AOGCM Replayed to MERRA-2. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 62, 147pp

  • Kimball J., K.A. Endsley, T. Kundig, J.Glassy, R. H. Reichle ,J. V. Ardizzone, (2022). Validation Assessment for the Soil Moisture Active Passive (SMAP) Level 4 Carbon (L4_C) Data Product Version 6. ASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2022-104606. Vol. 61, 45pp

  • Reichle R., Q. Liu, R. D. Koster, J. V. Ardizzone, A. Colliander, W. T. Crow, G. J. M. De Lannoy, J. S. Kimball, (2022). Soil Moisture Active Passive (SMAP) Project Assessment Report for Version 6 of the L4_SM Data Product. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 60, 72pp

  • Reichle R. H., Q. Liu, (2021). Observation-Corrected Precipitation for the SMAP Level 4 Soil Moisture (Version 6) Product and the GEOS R21C Reanalysis. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 59, 32pp

  • Reichle R., Q. Liu, R. D. Koster, J. V. Ardizzone, A. Colliander, W. T. Crow, G. J. M. De Lannoy, J. S. Kimball, (2021). Soil Moisture Active Passive (SMAP) Project Assessment Report for Version 5 of the L4_SM Data Product. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 58, 60pp

  • Chang Y., S. Schubert, R. Koster, A. Molod, (2021). Tendency Bias Correction in the GEOS AGCM. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 57, 78pp

  • Kimball J., K.A. Endsley, T. Kundig, J. Glassy, R. H. Reichle, J. V. Ardizzone, (2021). Validation Assessment for the Soil Moisture Active Passive (SMAP) Level 4 Carbon (L4_C) Data Product Version 5. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 56, 31pp

  • Schubert S., Y.-K. Lim, A. Molod, A. Collow, (2021). A Phenomenon-Based Decomposition of Model-Based Estimates of Boreal Winter ENSO Variability. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2021-104606. Vol. 55, 88pp

  • Carvalho D., W. McCarty, (2020). Position Estimation of Atmospheric Motion Vectors for Observation System Simulation Experiments. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2019-104606. Vol. 54, 44pp

  • Schubert S., A. Borovikov, Y.-K. Lim, A. Molod, (2019). Ensemble Generation Strategies Employed in the GMAO GEOS-S2S Forecast System. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2019-104606. Vol. 53, 75pp

  • Reichle R. H., Q. Liu, R. D. Koster, J. V. Ardizzone, A.Colliander, W. T. Crow, G.J. M. De Lannoy, J. S. Kimball, (2018). Soil Moisture Active Passive (SMAP) Project Assessment Report for Version 4 of the L4_SM Data Product. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2018-104606. Vol. 52, 72pp

  • Akella S., M. Suarez, (2018). The Atmosphere-Ocean Interface Layer of NASA's Goddard Earth Observing System Model and Data Assimilation System. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2018-104606. Vol. 51, 42pp

  • Todling R., A. El Akkraoui, (2018). The GMAO Hybrid Ensemble-Variational Atmospheric Data Assimilation System: Version 2.0. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2018-104606. Vol. 50, 184pp

  • Kim J., S. Akella, A. M. da Silva, R. Todling, W. McCarty, (2018). Preliminary evaluation of influence of aerosols on the simulation of brightness temperature in the NASA's Goddard Earth Observing System Atmospheric Data Assimilation System. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2018-104606. Vol. 49, 44pp

  • Errico Ronald M., Nikki C. Privé, David Carvalho, Meta Sienkiewicz, Amal El Akkraoui, Jing Guo, Ricardo Todling, Will McCarty, William M. Putman, Arlindo da Silva, Ronald Gelaro, Isaac Moradi, (2017). Description of the GMAO OSSE for Weather Analysis Software Package: Version 3. NASA/TM-2017-104606. Vol. 48, 156pp

  • Collow A. B., S. P. Mahanama, M. G. Bosilovich, R. D. Koster, S. D. Schubert, (2017). An Evaluation of Teleconnections Over the United States in an Ensemble of AMIP Simulations with the MERRA-2 Configuration of the GEOS Atmospheric Model. NASA/TM-2017-104606. Vol. 47, 68pp

  • McCarty W., L. Coy, R. Gelaro, A. Huang, D. Merkova, E. B. Smith, M. Seinkiewicz, K. Wargan, (2016). MERRA-2 Input Observations: Summary and Assessment. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2016-104606. Vol. 46, 61pp

  • Randles C. A., A. M. da Silva, V. Buchard ,A. Darmenov, P. R. Colarco, V. Aquila, H. Bian, E. P. Nowottnick, X. Pan, A. Smirnov, H. Yu, R. Govindaraju, (2016). The MERRA-2 Aerosol Assimilation. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2016-104606. Vol. 45, 143pp

  • Akella S., R.Todling, M. Suarez, (2016). Estimation of the Ocean Skin Temperature using the NASA GEOS Atmospheric Data Assimilation System. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2016-104606. Vol. 44, 88pp

  • Bosilovich M., S. Akella, L.Coy, R. Cullather, C. Draper, R. Gelaro, R. Kovach, Q. Liu, A. Molod, P. Norris, K. Wargan, W. Chao, R. H. Reichle, L. Takacs, Y. Vikhliaev, S. Bloom, A. Collow, S. Firth, (2015). MERRA-2: Initial Evaluation of the Climate. NASA/TM-2015-104606. Vol. 43, 139pp

  • Kimball J. S., L. A. Jones, J. Glassy, E. N. Stavros, N. Madani, R. H. Reichle, T. Jackson, A. Colliander, (2015). Soil Moisture Active Passive (SMAP) Project Calibration and Validation for the L4_C Beta-Release Data Product. NASA/TM-2015-104606. Vol. 42, 37pp

  • Schubert S., W. Pozzi, K. Mo, E. F. Wood, K. Stahl, M. Hayes, J. Vogt, S. Seneviratne, R. Stewart, R. Pulwarty, R. Stefanski, (2015). GDIS Workshop Report. NASA/TM-2015-104606. Vol. 41, 40pp

  • Reichle R. H., G. J. M. De Lannoy, Q. Liu, A. Colliander, A. Conaty, T. Jackson, J. Kimball, R. D. Koster, (2015). Soil Moisture Active Passive (SMAP) Project Assessment Report for the Beta-Release L4_SM Data Product. NASA/TM-2015-104606. Vol. 40

  • Mahanama S. P., R. D. Koster, G. Walker, L. Takacs, R. H. Reichle, G. De Lannoy, Q. Liu, B. Zhao, M. J. Suarez, (2015). Land Boundary Conditions for the Goddard Earth Observing System Model Version 5 (GEOS-5) Climate Modeling System - Recent Updates and Data File Descriptions. NASA/TM-2015-104606. Vol. 39, 55pp

  • Darmenov A., A. da Silva, (2015). The Quick Fire Emissions Dataset (QFED): Documentation of versions 2.1, 2.2 and 2.4. NASA/TM-2015-104606. Vol. 38 (pp212)

  • Takacs L., M. Suarez, R. Todling, (2015). Maintaining Atmospheric Mass and Water Balance Within Reanalysis. NASA/TM-2014-104606. Vol. 37 (pp39)

  • Gelaro R., W. M. Putman, S. Pawson, C. Draper, A. Molod, P. M. Norris, L. Ott, N. Privé, O. Reale, D. Achuthavarier, M. Bosilovich, V. Buchard, W. Chao, L. Coy, R. Cullather, A. da Silva, (2015). Evaluation of the 7-km GEOS-5 Nature Run. NASA/TM-2014-104606. Vol. 36

  • Reichle R. H., Q. Liu, (2014). Observation-Corrected Precipitation Estimates in GEOS-5. NASA/TM-2014-104606. Vol. 35

  • Keppenne C. L., M. M. Rienecker, R. M. Kovach, G. Vernieres, (2014). Background error covariance estimation using information from a single model trajectory with application to ocean data assimilation into the GEOS-5 coupled model. NASA/TM-2014-104606. Vol. 34

  • Rousseaux C. S., W. W. Gregg, (2014). The effects of chlorophyll assimilation on carbon fluxes in a global biogeochemical model. NASA/TM-2014-104696. Vol. 33 (22)

  • Provencal S., P. Kishcha, E. Elhacham, A. M. da Silva, P. Alpert, (2014). Estimates of AOD Trends (2002 - 2012) over the World's Major Cities based on the MERRA Aerosol Reanalysis. NASA/TM-2014-104606. Vol. 32, 40pp

  • Gregg W. W., N. W. Casey, C. S. Rousseaux, (2013). Global surface ocean carbon estimates in a model forced by MERRA. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA TM-2013-104606. Vol. 31, 39pp

  • Vernieres G., M. Rienecker, R. Kovach, C. Keppenne, (2012). The GEOS-iODAS: Description and Evaluation. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA TM—2012-104606. Vol. 30, 61pp

  • Rienecker M.M., D. Dee, J. Woollen, G. P. Compo, K. Onogi, R. Gelaro, M. G. Bosilovich, A. da Silva, S. Pawson, S. Schubert, M. Suarez, D. Barker, H. Kamahori, R. Kistler, S. Saha, (2012). Atmospheric Reanalyses - Recent Progress and Prospects for the Future. A Report from a Technical Workshop, April 2010. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA TM-2012-104606. Vol. 29, 56pp

  • Molod A., L. Takacs, M. Suarez, J. Bacmeister, I.-S. Song, A. Eichmann, (2012). The GEOS-5 Atmospheric General Circulation Model: Mean Climate and Development from MERRA to Fortuna. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA TM—2012-104606. Vol. 28, 117pp

  • Rienecker M.M., M. J. Suarez, R. Todling, J. Bacmeister, L. Takacs, H.-C. Liu, W. Gu, M. Sienkiewicz, R. D. Koster, R. Gelaro, I. Stajner, J. E. Nielsen, (2008). The GEOS-5 Data Assimilation System - Documentation of Versions 5.0.1, 5.1.0, and 5.2.0. Technical Report Series on Global Modeling and Data Assimilation. Vol. 27, 1-118pp

  • Bloom S., A. da Silva, D. Dee, M. Bosilovich, J.-D. Chern, S. Pawson, S. Schubert, M. Sienkiewicz, I. Stajner, W.-W. Tan, M.-L. Wu, (2005). Documentation and Validation of the Goddard Earth Observing System (GEOS) Data Assimilation System - Version 4. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 26 (NASA/), 1-187pp

  • Waliser D., S. Schubert, A. Kumar, K. Weickmann, R. Dole, (2003). Modeling, Simulation, and Forecasting of Subseasonal Variability. NASA Technical Report Series on Global Modeling and Data Assimilation, NASA/TM-2016-104606. Vol. 25, 70pp

  • Rienecker M., A. Troccoli, C. Keppenne, G. Johnson, (2003). Temperature Data Assimilation with Salinity Corrections: Validation for the NSIPP Ocean Data Assimilation System in the Tropical Pacific Ocean, 1993-1998. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 24, 1-39pp

  • Schubert S., R. Dole, H. van den Dool, M. Suarez, D. Waliser, (2002). Prospects for Improved Forecasts of Weather and Short-Term Climate Variability on Subseasonal (2-Week to 2-Month) Time Scales. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 23, 1-163pp

  • Gregg W.W., (2002). A Coupled Ocean-Atmosphere Radiative Model for Global Ocean Biogeochemical Models. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 22, 1-31pp

  • Keppene C. L., M. Rienecker, (2001). Design and Implementation of a Parallel Multivariate Ensemble Kalman Filter for the Poseidon Ocean General Circulation Model. NASA Technical Memorandum 104606. Vol. 21

  • Chang Y., S. D. Schubert, S. J. Lin, S. Nebuda, B.-W. Shen, (2001). The Climate of the FVCCM-3 Model. Technical Report Series on Global and Data Assimilation. Vol. 20

  • Chou M.-D., M. Suarez, X.-Z. Liang, M. M.-H. Yan, (2001). A Thermal Infrared Radiation Parameterization for Atmospheric Studies. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 19

  • Pegion P. J., S. D. Schubert, M. Suarez, (2000). An Assessment of the Predictability of Northern Winter Seasonal Means with the NSIPP 1 AGCM. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 18

  • Bacmeister J., S. D. Schubert, M. Suarez, P. J. Pegion, (2000). Atlas of Seasonal Means Simulated by the NSIPP 1 Atmospheric GCM. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 17

  • Takacs L., W. Sawyer, M. J. Suarez, M. S. Fox-Rabinowitz, (1999). Filtering Techniques on a Stretched Grid General Circulation Model. NASA Technical Memorandum 104606. Vol. 16

  • Chou M.-D., M. Suarez, (1999). A Solar Radiation Parameterization for Atmospheric Studies. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 15

  • Bosilovich M. G., S. D. Schubert, (1998). A Comparison of GEOS Assimilated Data with FIFE Observations. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 14

  • Min W., S. Schubert, (1997). Interannual Variability and Potential Predictability in Reanalysis Products. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 13

  • Chang A., L. Chiu, (1997). Comparison of Satellite Global Rainfall Algorithms. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 12

  • Yang W., I. M. Navon, R. Todling, (1997). Documentation of the Tangent and Adjoint Models of the Relaxed Arakawa-Schubert Moisture Parameterization Package of the NASA GEOS-1 GCM. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 11

  • Takacs L., M. Suarez, (1996). Dynamical Aspects of Climate Simulations Using the GEOS General Circulation Model. NASA Technical Memorandum 104606. Vol. 10

  • Koster R. D., M. J. Suarez, (1996). Energy and Water Balance Calculations in the Mosaic LSM. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 9

  • Yang W., I. M. Navon, (1995). Documentation of the Tangent Linear Model and Its Adjoint of the Adiabatic Version of the NASA GEOS-1 C-Grid GCM (Version 5.2). Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 8

  • Schubert S. D., R. Rood, (1995). Proceedings of the Workshop on the GEOS-1 Five-Year Assimilation. NASA Technical Memorandum 104606. Vol. 7

  • Schubert S. D., C. K. Park, C. Y. Wu, W. Higgins, Y. Kondratyeva, A. Molod, L. L. Takacs, M. Seablom, R. B. Rood, (1995). A Multiyear Assimilation with the GEOS-1 System: Overview and Results. NASA Technical Memorandum 104606. Vol. 6

  • Suarez M., L. L. Takacs, (1995). Documentation of the Aries-GEOS Dynamical Core: Version 2. NASA Technical Memorandum 104606. Vol. 5

  • Pfaendtner J., S. Bloom, D. Lamich, M. Seablom, M. Sienkiewicz, J. Stobie, A. da Silva, (1995). Documentation of the Goddard Earth Observing System (GEOS) Data Assimilation System: Version 1. NASA Technical Memorandum 104606. Vol. 4

  • Chou M.-D., M. J. Suarez, X.-Z. Liang, M. Yan, (1994). An Efficient Thermal Infrared Radiation Parameterization for Use in General Circulation Models. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 3

  • Li Y., S. Moorthi, J. R. Bates, (1994). Direct Solution of the Implicit Formulation of Fourth Order Horizontal Diffusion for Gridpoint Models on the Sphere. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 2

  • Takacs L., A. Molod, T. Wang, (1994). Documentation of the Goddard Earth Observing System (GEOS) General Circulation Model: Version 1. Technical Report Series on Global Modeling and Data Assimilation 104606. Vol. 1