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How is Asia’s climate changing Prof. Dr. Edvin Aldrian (LA, Chapter 14) Director of Center for Research and Development BMKG Indonesia © Yann Arthus-Bertrand / Altitude Presented at Launch of the IPCC’s Fifth Assessment Report (Synthesis) at the LEDS Asia Forum, Jogjakarta 10 – 11 Nopember 2014 BMKG Outline • Observed Changes • Regional Projections • Evidences of Climate Change in Indonesia • Climate Change Information System in Indonesia Chapters of Relevance Chapter 2 Observations: Atmosphere and Surface Chapter 12 Long-term Climate Change: Projections, Commitments and Irreversibility Chapter 14 Climate Phenomena and their Relevance for Future Regional Climate Change Annex I Atlas of Global and Regional Climate Projections Observed Changes Temperature Precipitation between AR4 and AR5 Change in Extremes Observed Changes Temperature Observed Changes Observed changes in Precipitation – AR4 vs. AR5 AR5 AR4 Projected Changes Projected Changes in Temperature and Precipitation Projected Changes Changes in Extremes Changes in Extremes Projected Changes Annual Precipitation Regional examples Monsoons ENSO Tropical Cyclones ATLAS Portraying regional climate change in WGI – through important climate phenomena Global Monsoon Regional Changes Monsoon systems Regional Changes Projected Future Changes in the Variability of El Niño/Southern Oscillation (ENSO) Precipitation Temperature Standard Deviation of NINO3 Tropical phenomena: Convergence Zones Rainfall Change (medium confidence) “wet-get-wetter” over CZ regions Figure 14.9: Seasonal cycle of zonal-mean tropical precipitation change (2081– 2100 in RCP8.5 minus 1986–2005) in CMIP5 multimodel ensemble mean. Eighteen CMIP5 models were used. Stippling indicates that more than 90% models agree on the sign of MME change. The red curve represents the meridional maximum of the climatological rainfall. Adapted from Huang et al. (2013). The seasonal-mean rainfall is projected to increase on the ITCZ equatorward flank “warmer-get-wetter” over oceans Figure 14.8: Upper panel: Annual-mean precipitation percentage change (∆P/P in green/gray shade and white contours at 20% intervals), and relative SST change (colour contours at intervals of 0.2°C; negative shaded) to the tropical (20S–20N) mean warming in RCP8.5 projections, shown as 23 CMIP5 model ensemble mean. More warming and rainfall at north of the equator. Less zonal SST gradient across the equatorial Pacific that contribute to the weakened Walker cells. Regional Changes Tropical cyclones Fig. AI.3 Annex I: Atlas of Global and Regional Climate Projections 35 regions 42 global climate models 2 variables Temperature, Precipitation 4 scenarios Principles Governing IPCC Work RCPs 2.6, 4.5, 6.0, 8.5 (1998, 2003, 2006) temp: DJF, JJA (for temp) precip: AMJJAS, ONDJFM Maps for 3 time horizons 2016-35, 2046-65, 2081-2100 reference period 1986-2005 Fig. AI.4 2 seasons Evidences of Climate Change In INDONESIA BMKG HISTORY OF ICE in PAPUA 1936-2000 BMKG Prentice, 2007 PUNCAK JAYA 1936 1991 2009 May 15, 2010 2001 W. Northwall Firn BMKG E. Northwall Firn Carstensz BMKG ICE & CLIMATE, HOW? “LAPIS LEGIT” BMKG Ice Core research Project BMKG The glaciers of Puncak Jaya, Papua, Indonesia. The proposed drill sites are marked in red (Klein & Kaplan, 2006) W. Northwall Firn Core Site E.Northwall Firn Core Site Southwall Hanging Glacier Core Site Core Site BMKG Ice Core research Project BMKG Biak 30 29 Consistent distribution - Mean shift per decade - Variances are relatively the same 28 27 26 25 24 T2 data 90-00 T3 data 00-10 T1 data 80-90 0.45 4000 6000 8000 10000 0.4 12000 0.35 0.3 Density 2000 0.25 0.2 0.15 0.1 0.05 0 24 25 26 27 Data 28 29 30 BMKG ‘Advanced’ QC: homogenization Original time series with significant (confidence = 95%) changepoints 30 29 Rationalization: 28 • Series is homogenized with respect 27 to the last segment (base period). 26 • Each quantile category is corrected 25 w.r.t. base period 24 • Trends are preserved 23 22 0 2000 4000 6000 8000 10000 12000 14000 6000 8000 10000 12000 14000 Homogenized time series (red) 30 29 28 27 26 25 24 23 22 0 2000 4000 SIGNAL OF GLOBAL WARMING IN LOCAL SST (ALDRIAN, 2007) BMKG 32 SST SCS y = 0.0208x + 28.92 31 Celcius 30 29 28 27 26 Suhu muka laut China Selatan 25 Linear (Suhu Suhumuka mukalaut lautChina ChinaSelatan) Selatan The detection of global warming is easy in shallow ocean like South China sea (0 – 5N, 105E – 110E). The increase of SST over this area is 0.0208ºC. In hundred years (2105) it is projected to reach 31.3ºC. Will SST rise even further then? 2006 2006 2005 2004 2003 2003 2002 2001 2001 2000 1999 1999 1998 1997 1996 1996 1995 1994 1994 1993 1992 1991 1991 1990 1989 1989 1988 1987 2002 1986 2006 1986 1999 1985 1995 1984 1992 1984 1988 1983 1985 1982 1982 24 31 30.5 30 29.5 29 28.5 28 27.5 27 26.5 26 2016 2009 2002 1995 1988 1982 1975 1968 1961 1954 1947 1941 1934 1927 1920 1913 1906 y = 0.00002x + 28.413 R2 = 0.0913 1900 SST (Celsius) Sea Surface Temperature Indonesia 1900-2009 (5.5 LS - 4.5 LS, 108 BT - 109 BT), source JRA-25 Tahun SST Trend Increase of 0.024 – 0.03oC / 100 years Sea Surface Temperature Indonesia 1900-2009 (12 LS - 8 LU, 95 BT - 141 BT), source JRA-25 30 29.5 28.5 28 y = 0.00002x + 28.16 R2 = 0.139 27.5 27 Tahun 2016 2009 2002 1995 1988 1982 1975 1968 1961 1954 1947 1941 1934 1927 1920 1913 1906 26.5 1900 SST (Celsius) 29 BMKG Lokasi stasiun SEA LEVEL RISE Kenaikan muka laut (mm/tahun) Sumber Cilacap (selatan Jawa Tengah) 1.30 Hadikusuma, 1993 Belawan (Sumatera Utara) 7.83 ITB, 1990 Jakarta 4.38 ITB, 1990 7.00 Berdasarkan data from 19842006 Semarang (jawa Tengah) 9.37 ITB. 1990 5.00 Berdasarkan data from 19842006 Surabaya (Jawa Timur) 1.00 Berdasarkan data from 19842006 Sumatra Timur 5.47 ITB, 1990 Lampung 4.15 P3O-LIPI, 1991 BMKG Ambient CO2 measurement Trend= 2.67ppm (logarithmic) Est Dec 2020+ 399.06 ppm Est Dec 2020 -26%=392.63 ppm BMKG Ambient CH4 Concentration BMKG Reduction of GHG concentration during Nyepi Hindu day Nama Lokasi : Koordinat : Metode & Frekuensi Data : Alat Data GRK : : Negara Singaraja Karangasem Bedugul Denpasar 8º 20’ 24”S, 114º 36’ 59”E 8º 6’ 57,2”S, 115º 4’ 50,1”E 8º 21’ 53,4”S, 115º 36’ 39,0”E 8º 15’ 1,8”S, 115º 9’ 8,2”E 8º 40’ 44,2”S, 115º 13’ 56,6”E Indirect Measurement (Sampling); Daily Data (14.00 WITA) Direct Measurement; Continuous Monitoring; (Data tiap 5 menit) Flask Sampler CO2, CH4 Flask Sampler CO2, CH4 Flask Sampler CO2, CH4 Flask Sampler CO2, CH4 WolfPack® & IRIS 4600 CO2, N2O BMKG Reduction of GHG concentration during Nyepi Hindu day 535 420 515 495 8 Maret 475 9 Maret 455 10 Maret 435 11 Maret Sebelum 415 12 Maret Saat Nyepi 395 Setelah 375 0:00 CO2 (ppm) 400 390 380 13 Maret 14 Maret 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 Jam 370 360 Negara Karangasem Bedugul LOKASI 342 Singaraja 341 8 Maret 340 N2O (ppb) CO2 (ppm) 410 9 Maret 339 10 Maret 338 11 Maret 337 12 Maret 336 13 Maret 335 0:00 14 Maret 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 Jam Average reduction 33% 21:36 Climate Change Information System For Sectoral Use in INDONESIA BMKG Development of Climate Change Information System BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG Development of Synoptic chart and analyses BMKG BMKG 44 BMKG BMKG 45 Further Information www.climatechange2013.org © Yann Arthus-Bertrand / Altitude BMKG