Sciences and Exploration Directorate

Timothy Lahmers



Org Code: 617

Mail Code: 617
Greenbelt, MD 20771


Brief Bio

Timothy Lahmers is an Assistant Research Scientist (NASA/GSFC/UMD-ESSIC). As a NASA Postdoctoral Program (NPP) fellow prior to joining ESSIC, he gained experience validating the NASA LIS/WRF-Hydro system. He has experience configuring LIS/WRF-Hydro for research and quasi-operations as well as executing the LIS system for DA experiments. As a core member of the LIS/WRF-Hydro development team, he helped to oversee the testing, development, and release of the LIS/WRF-Hydro system. From his Ph.D. at the University of Arizona, he also has experience calibrating distributed hydrologic models with custom configurations and investigating the impacts of surface hydrology on the atmosphere through high resolution coupled atmospheric and hydrologic models.



Lahmers, T. M., S. V. Kumar, K. A. Locke, et al. S. Wang, A. Getirana, M. L. Wrzesien, P.-W. Liu, and S. K. Ahmad. 2023. Interconnected hydrologic extreme drivers and impacts depicted by remote sensing data assimilation Scientific Reports 13 (1): 3411 [10.1038/s41598-023-30484-4]

Ahmad, S. K., S. V. Kumar, T. M. Lahmers, et al. S. Wang, P. Liu, M. L. Wrzesien, R. Bindlish, A. Getirana, K. A. Locke, T. R. Holmes, and J. A. Otkin. 2022. Flash Drought Onset and Development Mechanisms Captured with Soil Moisture and Vegetation Data Assimilation Water Resources Research [10.1029/2022wr032894]

Lahmers, T. M., S. V. Kumar, D. Rosen, et al. A. Dugger, D. J. Gochis, J. A. Santanello, C. Gangodagamage, and R. Dunlap. 2022. Assimilation of NASA's Airborne Snow Observatory Snow Measurements for Improved Hydrological Modeling: A Case Study Enabled by the Coupled LIS/WRF‐Hydro System Water Resources Research 58 (3): e2021WR029867 [10.1029/2021wr029867]

Lahmers, T. M., P. Hazenberg, H. Gupta, et al. C. Castro, D. Gochis, A. Dugger, D. Yates, L. Read, L. Karsten, and Y.-H. Wang. 2021. Evaluation of NOAA National Water Model Parameter Calibration in Semi-Arid Environments Prone to Channel Infiltration Journal of Hydrometeorology 22 (11): 2939–2969 [10.1175/jhm-d-20-0198.1]

Lahmers, T. M., C. L. Castro, and P. Hazenberg. 2020. Effects of Lateral Flow on the Convective Environment in a Coupled Hydrometeorological Modeling System in a Semiarid Environment Journal of Hydrometeorology 21 (4): 615-642 [10.1175/jhm-d-19-0100.1]

Lahmers, T. M., H. Gupta, C. L. Castro, et al. D. J. Gochis, D. Yates, A. Dugger, D. Goodrich, and P. Hazenberg. 2019. Enhancing the Structure of the WRF-Hydro Hydrologic Model for Semiarid Environments Journal of Hydrometeorology 20 (4): 691-714 [10.1175/jhm-d-18-0064.1]

Luong, T. M., C. L. Castro, H.-I. Chang, et al. T. Lahmers, D. K. Adams, and C. A. Ochoa-Moya. 2017. The More Extreme Nature of North American Monsoon Precipitation in the Southwestern United States as Revealed by a Historical Climatology of Simulated Severe Weather Events Journal of Applied Meteorology and Climatology 56 (9): 2509-2529 [10.1175/jamc-d-16-0358.1]

Lahmers, T. M., C. L. Castro, D. K. Adams, et al. Y. L. Serra, J. J. Brost, and T. Luong. 2016. Long-Term Changes in the Climatology of Transient Inverted Troughs over the North American Monsoon Region and Their Effects on Precipitation Journal of Climate 29 (17): 6037-6064 [10.1175/jcli-d-15-0726.1]

Troch, P. A., T. Lahmers, A. Meira, et al. R. Mukherjee, J. W. Pedersen, T. Roy, and R. Valdés‐Pineda. 2015. Catchment coevolution: A useful framework for improving predictions of hydrological change? Water Resources Research 51 (7): 4903-4922 [10.1002/2015wr017032]

Zamora, R. J., E. P. Clark, E. Rogers, M. B. Ek, and T. M. Lahmers. 2014. An Examination of Meteorological and Soil Moisture Conditions in the Babocomari River Basin before the Flood Event of 2008 Journal of Hydrometeorology 15 (1): 243-260 [10.1175/jhm-d-12-0142.1]