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A28    SCIENCE
                Thursday 7 February 2019

            Third of Himalayan glaciers can no longer be saved: study




            By BINAJ GURUBACHARYA                                                                                               study’s  external  reviewers.
             Associated Press                                                                                                   The  study  said  that  even
            KATHMANDU,  Nepal  (AP)                                                                                             if  the  most  ambitious  Paris
            —  One-third  of  Himalayan                                                                                         climate  accord  goal  of
            glaciers  will  melt  by  the                                                                                       limiting  global  warming  to
            end of the century due to                                                                                           1.5 degrees Celsius (2.7 de-
            climate  change,  threaten-                                                                                         grees  Fahrenheit)  by  the
            ing water sources for 1.9 bil-                                                                                      end  of  the  century  were
            lion people, even if current                                                                                        met,  more  than  a  third  of
            efforts  to  reduce  climate                                                                                        the  region’s  glaciers  will
            change  succeed,  an  as-                                                                                           be lost. If the global rise in
            sessment warns.                                                                                                     temperature were 2 C (3.6
            If global efforts to curb cli-                                                                                      F), two-thirds of Himalayan
            mate  change  fail,  the  im-                                                                                       glaciers will melt, it said.
            pact  could  be  far  worse:                                                                                        The  2015  Paris  Agreement
            a  loss  of  two-thirds  of  the                                                                                    was  a  landmark  moment
            region’s  glaciers  by  2100,                                                                                       in international diplomacy,
            said  the  Hindu  Kush  Hima-                                                                                       bringing  together  govern-
            laya  Assessment  released                                                                                          ments  with  vastly  differ-
            Monday  by  the  Interna-                                                                                           ent  views  to  tackle  global
            tional Centre for Integrated                                                                                        warming.  It  set  a  headline
            Mountain Development.                                                                                               target  of  keeping  aver-
            “Global  warming  is  on                                                                                            age  global  temperatures
            track to transform the frigid,    In this Monday, Feb. 22, 2016 file photo, trekkers pass through a glacier at the Mount Everest   from rising by more than 2
            glacier-covered  mountain    base camp, Nepal.                                                                      C,  or  1.5  C  if  possible.  Ac-
            peaks  of  the  Hindu  Kush                                                                        Associated Press  cording to a recent report
            Himalayas  cutting  across  dia, Nepal, China, Bhutan,  could  range  from  flooding  Dhaka, described the find-    by  the  Intergovernmental
            eight  countries  to  bare  Bangladesh and Myanmar.  from  the  increased  runoff  ings  of  the  report  as  “very  Panel on Climate Change,
            rocks  in  a  little  less  than  The  area,  which  includes  to  increased  air  pollution  alarming,”  especially  for  emissions of the most abun-
            a  century,”  said  Philippus  the world’s tallest mountain  from  black  carbon  and  downstream  nations  such  dant greenhouse gas, car-
            Wester  of  the  center,  who  peaks,  has  glaciers  that  dust deposited on the gla-  as Bangladesh.              bon  dioxide,  would  need
            led the report.              feed  into  river  systems  in-  ciers.                   “All  the  countries  affected  to  be  reduced  to  a  level
            The  five-year  study  looked  cluding the Indus, Ganges,  Saleemul  Huq,  director  of  need  to  prioritize  tack-  the  planet  can  absorb  —
            at  the  effects  of  climate  Yangtze,  Irrawaddy  and  the  International  Center  ling  this  upcoming  prob-    known  as  net  zero  —  by
            change  on  a  region  that  Mekong.                      for  Climate  Change  and  lem before it reaches crisis  2050 to keep global warm-
            cuts  across  Asia  through  The  assessment  said  that  Development,  an  environ-   proportions,” he said in an  ing at 1.5 C as envisaged in
            Afghanistan,  Pakistan,  In-  the  impact  of  the  melting  mental  research  center  in  email. Huq was one of the  the agreement.q

            2018 was 4th warmest, but next 5 years could break records




             By SETH BORENSTEIN          2018 was the fourth-warm-                                                              Schmidt. The U.S. tempera-
              AP Science Writer          est year on record behind                                                              ture  in  2018  was  the  14th
             WASHINGTON (AP) — While  2016, 2015 and 2017.                                                                      warmest  on  average,  said
             2018 was the fourth-warm-   The U.S. government’s Na-                                                              NOAA  climate  monitoring
             est  year  on  record,  British  tional Oceanic and Atmo-                                                          chief Deke Arndt.
             meteorologists are predict-  spheric Administration said                                                           Last year was also the third
             ing  the  next  five  years  will  2018’s  average  tempera-                                                       wettest  on  record  in  the
             be  much  hotter,  maybe  ture  was  58.42  degrees                                                                U.S.  Nine  eastern  states
             even record-breaking.       (14.69  Celsius),  which  is                                                           had  their  wettest  years  on
             Two  U.S.  agencies,  the  1.42 degrees (0.79 Celsius)                                                             record,  “an  exclamation
             United Kingdom Met Office  warmer than the 20th cen-                                                               point  on  a  trend  of  big
             and the World Meteorolog-   tury average. Much of Eu-                                                              rain” in the age of climate
             ical Organization analyzed  rope had its warmest years                                                             change, Arndt said.
             global   temperatures   in  on  record.  Records  go     This  map  made  available  by  NASA  in  February  2019  shows   There were 14 weather and
             slightly  different  ways,  but  back to 1880.           global surface temperature anomalies for 2014-2018.       climate  disasters  that  cost
             each  came  to  the  same  NASA  and  NOAA  climate                                               Associated Press  more  than  $1  billion,  for  a
             conclusion    Wednesday:  scientists said even though    2018 was a tad cooler than  physics.” Outside scientists,  total  of  $91  billion,  Arndt
                                                                      the  three  previous  years  such  as  Natalie  Mahow-    said.  At  least  247  people
                                                                      that’s  mostly  due  to  ran-  ald  of  Cornell  University,  died  in  those  disasters.
                                                                      dom weather variations.      said  the  forecast  is  consis-  That’s  the  fourth-highest
                                                                      “Never  mind  the  little  wig-  tent with what researchers  number  of  billion-dollar  di-
                                                                      gles from year to year. The  know  about  warming  and  sasters and the fourth-high-
                                                                      trend  is  going  relentlessly  natural variability.      est  dollar  amount,  taking
                                                                      up,  and  it  will  continue  to  The   obvious   long-term  inflation  into  account.  The
                                                                      do  so,”  Potsdam  Institute  trend  of  steady  warming  damage  included  Hurri-
                                                                      climate   scientist   Stefan  makes it easier to more ac-  cane  Michael’s  $25  billion
                                                                      Rahmstorf said in an email.  curately predict near future  tally  and  $24  billion  each
                                                                      “Those  who  live  in  denial  warming,  said  NASA  chief  from  Hurricane  Florence
                                                                      of this fact are in denial of  climate   scientist   Gavin  and the western wildfires.q
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