i
Assimilation of GOES-R Geostationary Lightning Mapper Flash Extent Density Data in GSI EnKF for the Analysis and Short-Term Forecast of a Mesoscale Convective System
-
Published Date:
2020
Source:Mon. Wea. Rev. (2020) 148 (5): 2111–2133.
- File Format:
- RIS
This document cannot be previewed automatically as it exceeds 5 MB
Please click the thumbnail image to view the document.
Details:
-
Personal Author:
-
Description:The recently launched Geostationary Operational Environmental Satellite “R-series” (GOES-R) satellites carry the Geostationary Lightning Mapper (GLM) that measures from space the total lightning rate in convective storms at high spatial and temporal frequencies. This study assimilates, for the first time, real GLM total lightning data in an ensemble Kalman filter (EnKF) framework. The lightning flash extent density (FED) products at 10-km pixel resolution are assimilated. The capabilities to assimilate GLM FED data are first implemented into the GSI-based EnKF data assimilation (DA) system and tested with a mesoscale convective system (MCS). FED observation operators based on graupel mass or graupel volume are used. The operators are first tuned through sensitivity experiments to determine an optimal multiplying factor to the operator, before being used in FED DA experiments FEDM and FEDV that use the graupel-mass or graupel-volume-based operator, respectively. Their results are compared to a control experiment (CTRL) that does not assimilate any FED data. Overall, both DA experiments outperform CTRL in terms of the analyses and short-term forecasts of FED and composite/3D reflectivity. The assimilation of FED is primarily effective in regions of deep moist convection, which helps improve short-term forecasts of convective threats, including heavy precipitation and lightning. Direct adjustments to graupel mass via observation operator as well as adjustments to other model state variables through flow-dependent ensemble cross covariance within EnKF are shown to work together to generate model-consistent analyses and overall improved forecasts.
-
Keywords:
-
Document Type:
-
Funding:
-
Main Document Checksum:urn:sha256:207a730ee92e7a645094c2eecaf79619ac351f4a96df2b08a3e41b1c11b44086
- File Type:
-
Supporting Files:No Additional Files
Related Documents:
-
-
Personal Author:Fierro, Alexandre O. ; Wang, Yunheng ; ...Published Date:2019Source:Mon. Wea. Rev. (2019) 147 (11): 4045–4069.Description:The assimilation of water vapor mass mixing ratio derived from total lightning data from the Geostationary Lightning Mapper (GLM) within a three-dimen...
Personal Author:Weckwerth, Tammy M., 1966- ; Hanesiak, John ; ...Published Date:2019Source:Bull. Amer. Meteor. Soc. (2019) 100 (11): 2223–2239.Description:Nocturnal convection initiation (NCI) is more difficult to anticipate and forecast than daytime convection initiation (CI). A major component of the P...
Personal Author:Zrnić, Dušan S. ; Zhang, Pengfei ; ...Published Date:2020Source:Atmosphere 2020, 11(4), 363.Description:Weather surveillance radars routinely detect smoke of various origin. Of particular significance to the meteorological community are wildfires in fore...
Personal Author:Zrnić, Dušan S. ; Zhang, P. ; ...Published Date:2020Source:Bull. Amer. Meteor. Soc. (2020) 101 (2): E90–E108.Description:High-sensitivity weather radars easily detect nonmeteorological phenomena characterized by weak radar returns. Fireworks are the example presented her...
Personal Author:Anderson-Frey, Alexandra K. ; Brooks, Harold ;Published Date:2019Source:Wea. Forecasting (2019) 34 (6): 1999–2015.Description:Deadly tornadoes are rare events, but that level of rarity varies with many factors. In this work, we summarize and update past research on tornado fa...
Personal Author:Erlingis, Jessica M. ; Gourley, Jonathan J. ; ...Published Date:2019Source:J. Hydrometeor. (2019) 20 (8): 1511–1531.Description:Backward trajectories were derived from North American Regional Reanalysis data for 19 253 flash flood reports published by the National Weather Servi...
Personal Author:Stratman, Derek R. ; Yussouf, Nusrat ; ...Published Date:2020Source:Wea. Forecasting (2020) 35 (1): 193–214.Description:A potential replacement candidate for the aging operational WSR-88D infrastructure currently in place is the phased array radar (PAR) system. The curr...
Personal Author:Lai, Anwei ; Gao, Jidong ; ...Published Date:2019Source:Mon. Wea. Rev. (2019) 147 (8): 2877–2900.Description:To improve severe thunderstorm prediction, a novel pseudo-observation and assimilation approach involving water vapor mass mixing ratio is proposed to...
Personal Author:Wang, Yunheng ; Gao, Jidong ; ...Published Date:2019Source:Wea. Forecasting (2019) 34 (6): 1807–1827.Description:A real-time, weather adaptive, dual-resolution, hybrid Warn-on-Forecast (WoF) analysis and forecast system using the WRF-ARW forecast model has been d...
Personal Author:Hux, Jiaxi ; Rosenfeld, Daniel ; ...Published Date:2020Source:J. Appl. Meteor. Climatol. (2020) 59 (6): 1051–1068.Description:This study analyzes the microphysics and precipitation pattern of Hurricanes Harvey (2017) and Florence (2018) in both the eyewall and outer rainband ...
Personal Author:Jahn, David E. ; Gallus, William A. ; ...Published Date:2019Source:Atmosphere 2019, 10(12), 727.Description:Climate studies based on global climate models (GCMs) project a steady increase in annual average temperature and severe heat extremes in central Nort...
Personal Author:Kerr, Christopher A. ; Wang, Xuguang ;Published Date:2020Source:Mon. Wea. Rev. (2020) 148 (3): 877–890.Description:The potential future installation of a multifunction phased-array radar (MPAR) network will provide capabilities of case-specific adaptive scanning. K...
Personal Author:Nai, Feng ; Curtis, Christopher ; ...Published Date:2020Source:J. Atmos. Oceanic Technol. (2020) 37 (6): 1103–1116.Description:Severe thunderstorms and their associated tornadoes pose significant threats to life and property, and using radar data to accurately measure the rota...
Personal Author:Lawson, John R. ; Galllus, William A. ; ...Published Date:2020Source:Atmosphere 2020, 11(4), 384.Description:The bow echo, a mesoscale convective system (MCS) responsible for much hail and wind damage across the United States, is associated with poor skill in...
Personal Author:Galarneau, Thomas J. ; Xubin, Zeng ;Published Date:2020Source:Mon. Wea. Rev. (2020) 148 (6): 2479–2502.Description:A synoptic analysis and soil moisture (SM) sensitivity experiment is conducted on the record-breaking rainstorm in Texas associated with Hurricane Har...
Personal Author:Jones, Thomas A. ; Skinner, Patrick ; ...Published Date:2020Source:Mon. Wea. Rev. (2020) 148 (5): 1829–1859.Description:The increasing maturity of the Warn-on-Forecast System (WoFS) coupled with the now operational GOES-16 satellite allows for the first time a comprehen...
Personal Author:Dawson, Daniel T. ; Roberts, Brett ; ...Published Date:2019Source:Mon. Wea. Rev. (2019) 147 (11): 3935–3954.Description:In idealized, horizontally homogeneous, cloud model simulations of convective storms, the action of surface friction can substantially modify the near...
Personal Author:Loken, Eric D. ; Clark, Adam J. ; ...Published Date:2019Source:Wea. Forecasting (2019) 34 (6): 2017–2044.Description:Most ensembles suffer from underdispersion and systematic biases. One way to correct for these shortcomings is via machine learning (ML), which is adv...
Personal Author:Flora, Montgomery L. ; Skinner, Patrick S. ; ...Published Date:2019Source:Wea. Forecasting (2019) 34 (6): 1721–1739.Description:An object-based verification method for short-term, storm-scale probabilistic forecasts was developed and applied to mesocyclone guidance produced by ...
Personal Author:Davies-Jones, Robert ; Wood, Vincent T. ; ...Published Date:2020Source:J. Atmos. Oceanic Technol. (2020) 37 (6): 1117–1133.Description:Formulas are obtained for observed circulation around and contraction rate of a Doppler radar grid cell within a surface of constant launch angle. The...
-
You May Also Like:
-
Personal Author:Hu, Junjun ; Fierro, Alexandre O. ; ...Published Date:2020Source:Mon. Wea. Rev. (2020) 148 (3): 1005–1028.Description:The recent successful deployment of the Geostationary Lightning Mapper (GLM) on board the Geostationary Operational Environmental Satellite R series (...
Personal Author:Elsenheimer, Cynthia B. ; Gravelle, Chad M. ;Published Date:2019Source:Wea. Forecasting (2019) 34 (5): 1587–1600.Description:In 2001, the National Weather Service (NWS) began a Lightning Safety Awareness Campaign to reduce lightning-related fatalities in the United States. A...