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UPDATED LAUNCH TIME.

Enter the observation date and time on a Station Information label.  Peel off the sticker and place it on the sonde on the side to the left of the battery compartment and mailing instructions tab.  The arrows on the sticker should point to the mailing instructions.

Fill in the appropriate information on the RRS paper log sheet.  Begin with the Ascension Number, the observer’s initials, and the date and time (in UTC).  The radiosonde serial number can be found on the bottom of the instrument.  Write down the type of balloon used, its lot number, and how much gas was put into the balloon (“Lift”).  Place marks in the column confirming the use a balloon, parachute, and a train regulator (“REEL”) if used.  Place the sonde on the baseline stand.

Fill in the same information from the log sheet in the Administrative Display of the RWS software (Figure 1.10).  Confirm the proper Ascension Number, date and time, and Release Number.  Enter the observer’s initials and click “Next.”

Figure 1.10—Administrative Display window.

Figure 1.11—Equipment Display window.

In the Equipment Display, enter the radiosonde serial number (Figure 1.11).  Select the proper balloon type and enter the lot number.  Enter the gas amount put into the balloon.  Select “Yes” if a train regulator and/or a parachute were used.  Click "Next."

Click “Refresh.”  Enter cloud and present weather conditions (Figure 1.12).  The cloud/weather group is a nine digit code that applies a temperature correction for solar radiation.  The code consists of the following:

NhCLhCMCHWWWW

Nh =   Amount of sky covered in oktas (eighths) by low clouds, or if no low clouds are present, coverage by middle clouds.

CL =   Type of low cloud

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