CLIMATE INDICES OF KENTEN CLIMATOLOGY STATION, BMKG-SOUTH SUMATERA

Presented by:Dara KasihairaniStaff of Observation and InformationKenten Climatology Station, BMKG - South SumateraApril 2nd – 5th 2012, Citeko-Bogor

OUTLINE

Kenten Climatology Station Profile Kenten’s Climate Indices :

- Temperature- Rain

Conclusion

KEN

TEN

CLIM

ATO

LO

GY

STATIO

N

Located at 02 ⁰ 55' 38, 3’’S and 104 ⁰ 46' 19, 0''E, about 10 KM from the centre of Palembang City, South Sumatera.

Established in 1975 and started its operational in 1976.

Area: 1.6 hectare

KENTEN MET GARDEN

In the perspective of the global warming issue and proves of the climate change, Kenten’s data shows its climate variability and the trend of its changing over the 35 years operational.

RClimDex (1.0) is designed to provide a user friendly interface to compute indices of climate extremes recommended by the CCl/CLIVAR Expert Team for Climate Change Detection Monitoring and Indices (ETCCDMI).

20 indices from Kenten’s Data computed by.

RCLIMDEX (1.0)

TXN AND TXXMONTHLY MINIMUM & MAXIMUM VALUE OF DAILY MAXIMUM

TEMP (ºC)

TNN AND TNXMONTHLY MINIMUM & MAXIMUM VALUE OF DAILY MINIMUM

TEMP (ºC)

TX10P AND TX90PPERCENTAGE OF DAYS WHEN TX<10TH AND TX>90TH

PERCENTILE

TN10P AND TN90PPERCENTAGE OF DAYS WHEN TN<10TH AND TN>90TH

PERCENTILE (DAYS)

DTRMONTHLY MEAN DIFFERENCE BETWEEN TX AND

TN (ºC)

RX1-DAY AND RX5-DAYMONTHLY MAXIMUM 1-DAY AND CONSECUTIVE 5-DAY

PRECIPITATION (MM)

R10MM, R20MM, R50MMANNUAL COUNT OF DAYS WHEN PRCP>=10MM, 20MM, AND 50MM

(DAYS)

R95P AND R99PANNUAL TOTAL PRCP WHEN RR>95TH AND RR>99TH

PERCENTILE (MM)

PRCPTOTANNUAL TOTAL PRCP IN WET DAYS

(RR>=1MM)

SDIIANNUAL TOTAL PRECIPITATION DIVIDED BY THE

NUMBER OF WET DAYS (DEFINED AS PRCP>=1.0MM) IN THE YEAR (MM/DAY)

CDD AND CWD

Maximum number of consecutive days with RR<1mm (Days)

Maximum number of consecutive days with RR>=1mm (Days)

TABLE OF INDICES TRENDIndices Year Period Slope Slope Deviation P-Value

TXx 1976-2011 0.031 0.01 0.005

TXn 1976-2011 0.016 0.015 0.274

TNx 1976-2011 0.039 0.008 0

TNn 1976-2011 0.057 0.011 0

TX10p 1976-2011 -0.253 0.077 0.003

TX90p 1976-2011 0.567 0.134 0

TN10p 1976-2011 -0.766 0.1 0

TN90p 1976-2011 0.815 0.124 0

DTR 1976-2011 -0.016 0.007 0.027

RX1-Day 1976-2011 0.273 0.455 0.553

RX5-Day 1976-2011 1.375 0.681 0.052

R10mm 1976-2011 -0.03 0.196 0.879

R20mm 1976-2011 -0.069 0.149 0.646

R50mm 1976-2011 0.098 0.064 0.131

R95p 1976-2011 9.256 4.379 0.042

R99p 1976-2011 2.872 1.963 0.153

PRCPTOT 1976-2011 5.372 7.347 0.47

SDII 1976-2011 0.06 0.032 0.069

CDD 1976-2011 0.236 0.237 0.153

CWD 1976-2011 -0.043 0.071 0.47

The increasing trend- TXx,- TNx,- TNn,- TN90p,- TX90p,and - R95p.

The decreasing trend- TN10p, and - TX10p

CONTACT PERSON

KENTEN CLIMATOLOGY STATION

JL.RESIDEN H.AMALUDDIN SAKO-KENTEN,PALEMBANG 30164, PO. BOX. 1191 PHONE: +62711 811642FAX: +62711 810831EMAIL: staklim_knt@yahoo.com