Downward Longwave Irradiance (DLI) estimates at the Earth's surface, derived from the GOES-E geostationary satellite. The algorithm uses a bulk parameterization with Numerical Weather Prediction model outputs and satellite cloud data to calculate clear-sky DLI. Data is remapped to a 0.05-degree regular grid, with daily values representing the integration of all hourly values within a UT day.
Use Cases
- Modeling surface energy budgets by integrating daily DLI values with other radiative fluxes.
- Analyzing cloud radiative forcing by comparing clear-sky DLI estimates with cloud-corrected values.
- Validating climate model outputs for downward longwave radiation using the 0.05-degree gridded satellite product.
- Studying diurnal and seasonal cycles of surface longwave radiation from the integrated hourly data.
Strengths
- Data is derived from the operational GOES-E geostationary satellite, providing consistent observation.
- Spatial resolution is defined at a 0.05-degree regular grid for systematic analysis.
Limitations
- The bulk parameterization algorithm relies on NWP model outputs, introducing potential model bias.
- Sample size, temporal coverage, and specific geographic bounds are not provided in the description.
Provenance
- Source
- EUMETSAT
- Collection Method
- Derived from GOES-E satellite data using a parameterization algorithm with NWP and cloud information.
- Geography
- Coverage area of the GOES-E geostationary satellite, likely focused on the Americas and adjacent oceans.