Pre-LBA Carbon in the Amazon River Experiment (CAMREX) Data

The objective of CAMREX (Carbon in the Amazon River Experiment) project which was conducted from 1982 through 1991, was been to define by mass balances and direct measurements those processes which control the distribution of bioactive elements (C, N, P and O) in the mainstem of the Amazon River in Brazil. The CAMREX dataset represents a time series unique in its length and detail for very large river systems. The central sampling strategy has been to obtain representative flux-weighted water samples for comprehensive chemical analysis and to make rate measurements over 18 different sites within a 2000 km reach of the Brazilian Amazon mainstem, including major intervening tributaries. Samples have now been collected on 13 different cruises (1982-1991) during contrasting hydrographic stages. Data or images are provided for (1) water chemistry, (2) daily river discharge, (3) monthly estimates for 1989 of some model drivers and structure including NPP, Evapotranspiration, Precipitation, Temperature, and AVHRR data, (4) daily precipitation, and (5) air temperature anomalies. The processed, quality controlled and integrated data in the documented Pre-LBA Data sets were originally published as a set of three CD_ROMs (Marengo and Victoria, 1998) but are now archived individually.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated April 13, 2026, 20:22 (UTC)
Created April 1, 2025, 18:26 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 4e9f4b60-38d8-4e8d-98f5-e78d8fe1c50e
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/904
license https://www.usa.gov/government-works
modified 2026-04-06T22:16:02Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash c77cbc2ec59a038bffcd941623fd845411aa71d2aad93e200a7706da8a185ec2
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-80.0,"NorthBoundingCoordinate":4.0,"EastBoundingCoordinate":-50.0,"SouthBoundingCoordinate":-20.0}],"CARTESIAN"]
temporal 1982-01-01/1991-12-31
theme {"Earth Science"}