ECMWF Modeled Diurnal Precipitation and Fluxes for Amazon 1999

Rondonia, Brazil, is the focus of this dataset providing the mean diurnal cycle of precipitation, near-surface thermodynamics, and surface fluxes. Data were generated from 12- to 36-hour short-range forecasts using the European Centre for Medium-Range Weather Forecasts (ECMWF) operational model from fall 2000. It was produced for two LBA field campaigns, WETAMC and TRMM, conducted during January and February of 1999.

Use Cases

• Validating and bias-checking atmospheric model outputs against mean hourly precipitation observations.
• Analyzing the diurnal cycle of surface heat fluxes and near-surface air temperature in a tropical rainforest environment.
• Studying land-atmosphere coupling during the Amazon wet season using modeled thermodynamic variables.

Strengths

• Data originates from a high-resolution operational ECMWF model with T319 truncation and 60 vertical levels.
• Includes observational data for model bias checking, specifically mean hourly precipitation.
• Covers two coordinated field campaigns (WETAMC and TRMM) providing a focused temporal scope.

Limitations

• Key metadata conflicts: 'last updated' dates are 1999-03-31 on NASA Earthdata and 2026-03-13 on Data.gov.
• Specific column names, row counts, and file sizes are not provided by any source.
• Model version is from the year 2000, which may not reflect current state-of-the-art parameterizations.

Provenance

Source

European Centre for Medium-Range Weather Forecasts (ECMWF) model, processed by NASA.

Collection Method

12- to 36-hour short-range forecasts from daily 1200 UTC analyses, run for specific LBA field campaigns.

Time Range

January - February 1999

Freshness

2026-03-13 01:10:51.388844

Geography

Rondonia, Brazil, Amazonia