3-year trends to August 2013

Parametric plots of smoothed climate variables at Manilla
“Still warm and dry”Trends to August 2013.

The raw value of maximum temp anomaly for August was lower than for July. Other variables were typical of “drought”, except for minimum temp, which was normal.

The fully-smoothed data point for February 2013 completes a summer season that moved away from drought. By February, smoothed values of anomalies for rainfall, temperature range, and minimum temperature had returned to normal, but dew point was still very low, and cloudiness and subsoil temperature were high.

El Niño – Southern Oscillation (ENSO)

The first points on these graphs (September 2010) just catch the La Niña event of spring 2010, which was followed by another La Niña event in spring 2011. At Manilla, both events produced extremely low daily maximum temperature. The 2010 event produced extremes of cloudiness, humidity (high dew point), narrow daily temperature range, and low subsoil temperature. The 2011 event produced quite different results: extremely high rainfall and extremely cold nights.

Note:
Fully smoothed data – Gaussian smoothing with half-width 6 months – are plotted in red, partly smoothed data uncoloured, and raw data for the last data point in orange. January data points are marked by squares.
Blue diamonds and the dashed blue rectangle show the extreme values in the fully smoothed data record since September 1999.

3-year trends to July 2013

Parametric plots of smoothed climate variables at Manilla
“Very warm days and nights”Trends to July 2013.

Raw values for July showed a big jump towards hot and dry for most variables, but dew point anomaly fell only to zero. Minimum temperature and subsoil temperature fell back a little from extremely high anomaly values in June.

The fully-smoothed data point for January 2013 continues a drift towards normal from the mild drought of October.

Note:
Fully smoothed data – Gaussian smoothing with half-width 6 months – are plotted in red, partly smoothed data uncoloured, and raw data for the last data point in orange. January data points are marked by squares.
Blue diamonds and the dashed blue rectangle show the extreme values in the fully smoothed data record since September 1999.

3-year trends to December 2010

Parametric plots of smoothed climate variables at Manilla

“Still More Flooding Rains”

Trends to December 2010

December 2010 raw data points are yet again in the “Flooding Rains” area in the bottom left corner of five of the six graphs. Anomaly values of rainfall, cloudy days, Dew Point, temperature range and subsoil temperature are extreme. The Minimum temperature anomaly is stuck near zero.

Note:
Fully smoothed data – Gaussian smoothing with half-width 6 months – are plotted in red, partly smoothed data uncoloured, and raw data for the last data point in orange. January data points are marked by squares.
Blue diamonds and the dashed blue rectangle show the extreme values in the fully smoothed data record since September 1999.

3-year trends to November 2010

Parametric plots of smoothed climate variables at Manilla
“Near a “flooding rains” peak?”

Trends to November 2010

Data points for climate anomalies in the autumn months (MAM) of 2010 are now fully smoothed.

  • In autumn 2010 the smoothed maximum temperature anomaly fell much faster than it had risen in the previous autumn (clearer on the second and fourth graphs). Partially smoothed later values suggest that an extreme negative temperature anomaly came in October 2010.
  • Rainfall anomalies are plotted (inverted) on the y-axis of the first graph. Fully-smoothed autumn values rose with falling maximum temperature, but remained negative. Later values generally rose rapidly to an extreme positive raw value of +38 mm in November.
  • During autumn of 2010 the anomaly of percent cloudy days rose to a new record for fully-smoothed values. It continued to rise to an apparent extreme in October 2010.
  • Early morning dew point was positive and rising in autumn. It seems to have peaked at less than a record value in September 2010.
  • The anomaly of daily temperature range fell during autumn to a new negative record for smoothed data. It continued to fall to an apparent negative peak in September 2010.
  • In autumn daily minimum anomalies fell little below the peak of December 2009. Later they traced an arc through the “Equable” zone of the graph, ending near zero.
  • The autumn subsoil temperature anomaly was near zero and scarcely falling. It then accelerated downwards to an apparent extreme in October 2010.

Note:
Fully smoothed data – Gaussian smoothing with half-width 6 months – are plotted in red, partly smoothed data uncoloured, and raw data for the last data point in orange. January data points are marked by squares.
Blue diamonds and the dashed blue rectangle show the extreme values in the fully smoothed data record since September 1999.

3-year trends to October 2010

Parametric plots of smoothed climate variables at Manilla
“More Flooding Rains”

Trends to October 2010

The October 2010 data, marked with orange diamonds, are again in the “Flooding Rains” area in the bottom left corner of five of the six graphs. Anomaly values of rainfall, cloudy days, Dew Point, temperature range and subsoil temperature are extreme. The Minimum temperature anomaly is now near zero but falling rapidly.

Note:
Fully smoothed data – Gaussian smoothing with half-width 6 months – are plotted in red, partly smoothed data uncoloured, and raw data for the last data point in orange. January data points are marked by squares.
Blue diamonds and the dashed blue rectangle show the extreme values in the fully smoothed data record since September 1999.