...technique
As discussed in LHW, for future scatterometers this requirement may be relaxed.

...chaco
Chaco - Drought deciduous lowland (and submontane) woodland. The Gran Chaco region is found in Bolivia, along the plain between the Paraguay and Parana rivers in Paraguay, and along the Rio Paraguay in southern Brazil. This woodland is typically multi-canopied and deciduous, with cactus located in drier areas. There are many climatic and edaphic variations on a local scale which are not differentiated on the map.

...caatinga
Caatinga - Semi-deciduous thorn scrub with succulents. It is found in north-eastern Brazil in areas where the climate is subhumid to arid. It is bordered on the east by the northern variety of campos cerrados and on the east by the coastal Atlantic forest and related degraded formations. Climax caatinga formations are ligneous, drought-deciduous, thickly branched, narrow leafed, and sometimes thorned. The physiognomy of caatinga is variable. In some areas it may resemble shrubland steppe, and in other regions may be a dense scrubland with canopies reaching ten meters. Cactus may also be found.

...pantanal
Pantanal - A phytogeographical complex covering over 100,000 km along the Rio Paraguay and its tributaries in Brazil, Bolivia, and Paraguay. The Pantanal region is primarily a humid savanna of hygrophytic grassland of which 80%is flooded during the rainy season (Oct.-March). In areas of higher local relative relief, pantanal includes shrubs, woodland, and riparian forests along the banks of the rivercourses.

...(N)
Campos cerrados (N) - Medium-tall grassland with several species of broad-leaved evergreen trees and shrubs. These trees and shrubs average 5 meters in height, have thick bark, twisted branches, and partially deciduous leaves which may be hairy and leathery. Anthropogenic change, edaphic factors, and fire in the campos cerrados (N) make the landscape extremely variable.

...(S)
Campos cerrados (S) - Medium-tall grassland with several species of broad-leaved evergreen trees and shrubs. This formation is located in Southern Brazil and north-central Paraguay. It is distinguished from campos cerrados (N) by its shorter dry season and a definite cool season. In general, it possesses a denser understory than the northern campos cerrados. Primarily grassland with sedges, shorter palms are sometimes common.

...sujos
Campos sujos - ``Dirty Grassland''. A prairie grassland with scattered shrubs. Within the study area of this paper, they are located along the upper Rio Branco in northern Brazil.

...limpos
Campos limpos - Tall prairie grassland nearly devoid of shrubs and trees. Within the study area, these areas are mixed with campos sujos in northern Brazil.

long@pepper.ee.byu.edu
Fri Sep 30 08:49:46 MDT 1994