LCZO -- Meteorology -- Daily -- Sabana Field Station -- (2001-2010)

Description of data preparation performed on data from 2001 to 2007 (end).

Cleaning Data
In the original form of Sabana data (both daily and hourly data), instrument frequently recorded minimum value of TIRRa and Total PFD as negative values and maximum value of RH as over 100%. Unquestionably, these are unrealistic values. Thus, they were replaced by 0 (zero) for TIRRa and Total PFD minimum values and 100% for RH maximum values.

Defected Data
There were noticeable defect of Total PFD values in 2003 and 2006 (both daily and hourly data). Specifically, in 2003, defected Total PFD values were from January 1st (Day # = 1) through September 3rd (Day # = 247) and, in 2006, they were from March 24th (Day # = 83) through October 31st (Day # = 304). Therefore, four year (2001, 2002, 2004, and 2005) monthly averages were calculated and multiplier was developed based on the ratio of [four year average] / [2003 (or 2006) defected data]. Detail calculation of this can be seen in the Modification file (MS Excel file). Accordingly, columns denoted as “Modified Total PFD” are results of this modification. However, note that red and black colors within the column indicate modified and non-modified (original) values, respectively.

Missing Data
There were large numbers of data missing in both daily and hourly dataset which are outlined below. Additionally, there were couples of significantly noticeable defected values in some columns which were omitted from the dataset. Thus, missing and omitted data were left as blank (no values).

Grizelle González - Project Leader, Research Unit

USDA FS - International Institute of Tropical Forestry

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