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UPPER-AIR  OBSERVATION PUBLICATIONS
MRS  OPERATION

Aerographers Mate, Module 02-Miscellaneous Observations and Codes
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Q4.   What   is   the   significant   difference   between   a radiosonde   observation   and   a   rawinsonde observation? Q5.  What are the two types of upper-air observations still  conducted  by  Navy  and  Marine  Corps personnel? Q6.  An  aircraft  deployed  radiosonde  is  known  by what term? Q7.  What  publication  outlines  procedures  for  all United  States  civilian  and  military  upper-air observations? MINI  RAWINSONDE  SYSTEM LEARNING  OBJECTIVES:  Describe   the procedures  used  to  conduct  an  upper-air observation   using   the   Mini   Rawinsonde System  (MRS).  Explain  the  correct  balloon preparation   procedures.   Identify   the modifications that must be made to the MRS- evaluated   data   to   conform   to   WMO international a n d    r e g i o n a l coding requirements,  as  well  as  national  requirements. Figure  1-2.—  AN/UMQ-12  MRS  data  receiver/processor  and case. The AN/UMQ-12 mini rawinsonde system (MRS) is   a   highly   compact,   portable   system   ideal   for shipboard, mobile team, and field use. It consists of a relatively   lightweight   (66-pound)   computerized receiver/processor   (fig.   1-2)   mounted   in   a   rugged, shock-absorbing  case. The  system  also  includes  an RM-20  UHF  telemetry  antenna  that  receives  data signals from the Vaisala RS-80 radiosonde transmitter, which  is  carried  aloft  by  the  balloon  (fig.  1-3).  Most MRS units are now equipped with a GPS antenna that is Figure  1-3.—Vaisala  RS-80  series  radiosonde  instrument. 1-4







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