- Related Research Areas
- Atmospheric Composition, Weather
Overview. The proposed project aims to develop, validate and provide the MAP community with an observation-driven integrated modeling system that represents aerosol, cloud, precipitation and land processes at satellite-resolved scales. In this project, we define “satellite-resolved” scales as being within a typical mesoscale atmospheric modeling grid (roughly 1-25 km), although this work is designed to bridge the continuum between local (microscale), regional (mesoscale) and global (synoptic) processes. We assert that representing the full coupling between aerosol, cloud, precipitation and land processes is critical for predicting local, regional, and global water and energy cycles, in addition to high-impact phenomena such as floods, hurricanes, mesoscale convective systems, droughts, and monsoons. Therefore, scientists at GSFC and MSFC propose to provide an integrated modeling system built upon the Weather Research and Forecasting (WRF) model that unifies and incorporates NASA’s unique experience and capabilities validating, simulating and assimilating current earth science satellite observations (e.g., Terra, Aqua, Aura, TRMM, Cloudsat, CALIPSO) into models to support observationally-based improvements of Earth system model components. This capability will provide a foundation for demonstrating the potential and actual impacts of future NASA Earth science Decadal Survey missions such as SMAP and Icesat-II. Relevance. This proposal is directly relevant to the MAP themes 1) Integrated studies of weather and climate and 3) Atmospheric chemistry. In particular, this proposal contributes to the development of an observation-driven modeling environment that can be configured for local and regional applications. Through its interaction with and interfaces to the MAP-supported global GEOS-5 system, we will support coupled model investigations across a continuum of spatial and temporal scales to examine the representation of Earth system processes including land-atmosphere interaction, moisture transport, cloud-radiation feedbacks, and aerosol-cloud-radiation processes. Approach. As part of the overarching goal to provide an observation-driven integrated modeling system at satellite-resolved scales, we will further develop and support NASA-oriented capabilities in the Advanced Research WRF model by fully integrating the GSFC Land Information System (LIS--already coupled to WRF), the WRF/Chem enabled version of the GOddard Chemistry Aerosols Radiation Transport model (GOCART), and the Goddard Satellite Data Simulation Unit (SDSU) into a single NASA Unified WRF. Several prototypes for this system have already been demonstrated, including several NASA-developed sub-components which have already been coupled with WRF individually, e.g., Goddard microphysical schemes, radiative transfer processes (including explicit interaction between clouds and radiation), the LIS land surface modeling and land data assimilation system, the GOCART global aerosol transport model, and a real-time forecasting system using Goddard Earth Observing System (GEOS) global analyses as initial and boundary conditions. This proposal will unify these prototype systems into a single, validated and documented modeling capability for NASA/MAP and the broader scientific community.
Project PI: Christa Peters-Lidard/NASA Goddard Space Flight Center
NASA/Goddard Space Flight Center, Hydrological Sciences. Branch, Code 974, Greenbelt, MD 20771
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