Data

Prescott Index derived from 1" SRTM DEM-S

Terrestrial Ecosystem Research Network
Austin, Jenet ; Gallant, John
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=10.4225/08/53EB2D0EAE377&rft.title=Prescott Index derived from 1" SRTM DEM-S&rft.identifier=10.4225/08/53EB2D0EAE377&rft.publisher=Commonwealth Scientific and Industrial Research Organisation&rft.description=The Prescott Index is a measure of water balance that has proven to be a useful in soil mapping both to stratify study areas for sampling and as a quantitative predictor of soil properties (Prescott, 1949; McKenzie et al, 2000). The index was designed to give an indication of the intensity of leaching by excess water and is calculated using long-term average precipitation P and potential evaporation E, both expressed as mean monthly values in mm (mean annual values divided by 12): PI = 0.445P / E^0.75 The evaporation was estimated from temperature and net radiation; the net radiation was computed by the SRAD solar radiation model using the smoothed 1 arc-second resolution DEM-S (ANZCW0703014016) and includes both regional climatic influences and local topographic effects. Precipitation and temperature were obtained from national climate surfaces averaged over the same time period as the climatic information used in the radiation calculations (1981-2006). The Prescott Index has no units. Larger values indicate wetter conditions. The 3 arc-second resolution version of the Prescott Index has been produced from the 1 arc-second resolution surface, by aggregating the cells in a 3x3 window and taking the mean value.&rft.creator=Austin, Jenet &rft.creator=Gallant, John &rft.date=2014&rft.edition=v2&rft.relation=http://hdl.handle.net/102.100.100/14052&rft.coverage=northlimit=-10; southlimit=-44; westlimit=113; eastLimit=154; projection=EPSG:4326&rft_rights=Creative Commons Attribution 3.0 Australia&rft_rights=No limitations to public access&rft_rights=Data is accessible online and may be reused in accordance with licence conditions&rft_subject=Prescott Index&rft_subject=LAND Topography Models&rft_subject=ECOLOGY Landscape&rft_subject=TERN_Soils&rft_subject=Land Surface&rft_subject=Australia&rft_subject=Environmental Management&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=ENVIRONMENTAL SCIENCE AND MANAGEMENT&rft_subject=Landscape Ecology&rft_subject=ECOLOGICAL APPLICATIONS&rft_subject=Land capability and soil productivity&rft_subject=Pedology and pedometrics&rft_subject=Soil Sciences not elsewhere classified&rft_subject=SOIL SCIENCES&rft_subject=Natural Resource Management&rft_subject=TERN Landscapes&rft_subject=Soil and Landscape Grid&rft.type=dataset&rft.language=English Access the data
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Brief description

The Prescott Index is a measure of water balance that has proven to be a useful in soil mapping both to stratify study areas for sampling and as a quantitative predictor of soil properties (Prescott, 1949; McKenzie et al, 2000). The index was designed to give an indication of the intensity of leaching by excess water and is calculated using long-term average precipitation P and potential evaporation E, both expressed as mean monthly values in mm (mean annual values divided by 12): PI = 0.445P / E^0.75 The evaporation was estimated from temperature and net radiation; the net radiation was computed by the SRAD solar radiation model using the smoothed 1 arc-second resolution DEM-S (ANZCW0703014016) and includes both regional climatic influences and local topographic effects. Precipitation and temperature were obtained from national climate surfaces averaged over the same time period as the climatic information used in the radiation calculations (1981-2006). The Prescott Index has no units. Larger values indicate wetter conditions. The 3 arc-second resolution version of the Prescott Index has been produced from the 1 arc-second resolution surface, by aggregating the cells in a 3x3 window and taking the mean value.

Notes

Credit
All Rights (including copyright) CSIRO Australia 2012.

Created: 2014-08-13

Issued: 2014-08-13

Modified: 2014-08-13

Data time period: 2000-02-11 to 2000-02-22

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Subjects
Australia | Ecological Applications | ECOLOGY Landscape | Environmental Science and Management | Environmental Sciences | Environmental Management | LAND Topography Models | Land Surface | Land capability and soil productivity | Landscape Ecology | Natural Resource Management | Pedology and pedometrics | Prescott Index | Soil Sciences | Soil Sciences Not Elsewhere Classified | Soil and Landscape Grid | TERN Landscapes | TERN_Soils |

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  • global : a8605fdc-7dc5-50c5-a27b-58698d05f807
ACN 633 798 857