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The magnificent Chilean Andes as seen from the CCAT Observatory site on Cerro Chajnantor

The magnificent Chilean Andes as seen from the CCAT Observatory site on Cerro Chajnantor

Descending from the summit

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OVERVIEW

Weather stations have been deployed at several sites of interest to the CCAT Project.  The data are available in text files in two formats.

Format 1 (.txt)

Format produced by weather station data logger.  Data in columns, separated by commas.  Comment lines prefaced "#".  Occasional extraneous text at ends of lines (mostly excised).

Column Quantity Unit Remark
1 unit    id number
2 date yy/mm/dd  
3 time hh:mm:ss  time zone depends on unit
4 wind speed
(average)		 m s-1  average in 15 min interval
5 wind direction (average) degrees from North  average in 15 min interval
6 wind direction variation degrees

 standard deviation in 15 min interval
7 wind speed (peak) m s-1  peak in 15 min interval
8 temperature oC  
9 relative humidity %  
10 pressure mbar  
11 battery V  
12 zero    

 

SUMMARY 2006 MAY - 2014 November

 

Quantity  
Quartiles
 
Cumul. Distrib.
Variations
  Min.
  25%
  Med.
  75%
  Max.
Diurnal
Seasonal
Temperature [°C] -24.8 -9.4 -5.9 -2.8 8.9
pdf
pdf
pdf
Pressure [mbar] 500 516 518 519 524
Relative Humidity [%]   10 24 50  
Absolute Humidity [g m-3]   0.3 0.7 1.5 6.3
Wind Speed (peak)† [m s-1]   7.9 11.5 15.1 204.7
Wind Speed (ave.)† [m s-1]   2.0 3.8 6.2 26.7

† Wind speed peak and average in 15 min intervals.

Events

2012 October 27 15:04 UT - Clock 1 min ahead; rest to UT.
2011 November 5 16:38 UT - Clock 2 min ahead; reset to UT.
2010 April 4 17:05 UT - Clock 2 min ahead; reset to UT.
2010 January 26 17:56 UT - Replace anemometer.
2009 September 27 14:59 UT - Anemometer broken.
2009 March 19 15:08 UT - Clock 3 min ahead; reset to UT.
2006 May 11 - Unit 2 installed, clock set to UT.
 

Yearly and monthly summaries


2014

Month Time Series Distributions Data Diurnal
2014 pdf pdf   pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf


2013

Month Time Series Distributions Data Diurnal
 2013 pdf pdf   pdf
 December pdf pdf txt.zip pdf
 November pdf pdf txt.zip pdf
 October pdf pdf txt.zip pdf
 September pdf pdf txt.zip pdf
 August pdf pdf txt.zip pdf
 July pdf pdf txt.zip pdf
 June pdf pdf txt.zip pdf
 May pdf pdf txt.zip pdf
 April pdf pdf txt.zip pdf
 March pdf pdf txt.zip

pdf
 February pdf pdf txt.zip pdf
 January pdf pdf txt.zip pdf


2012

Month Time Series Distributions Data Diurnal
2012 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf


2011

Month Time Series Distributions Data Diurnal
2011 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf

2010

Month Time Series Distributions Data Diurnal
2010 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf

2009

Month Time Series Distributions Data Diurnal
2009 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf

2008

Month Time Series Distributions Data Diurnal
2008 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf

2007

Month Time Series Distributions Data Diurnal
2007 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf
April pdf pdf txt.zip pdf
March pdf pdf txt.zip pdf
February pdf pdf txt.zip pdf
January pdf pdf txt.zip pdf

2006

Month Time Series Distributions Data Diurnal
2006 pdf pdf   pdf
December pdf pdf txt.zip pdf
November pdf pdf txt.zip pdf
October pdf pdf txt.zip pdf
September pdf pdf txt.zip pdf
August pdf pdf txt.zip pdf
July pdf pdf txt.zip pdf
June pdf pdf txt.zip pdf
May pdf pdf txt.zip pdf