**MET SERVICES**

File STN/649/64

**SYNOPTIC OR CLIMATE STATION INSPECTION REPORT**

**Name of Station**: ***Gobabeb*** **Station No:** 68106

**Observer's name**: Calvin Sisamu **Person interviewed**: Calvin Sisamu

Site and enclosure (any changes in site, exposure, layout of
instruments, general condition or alterations since last visit):

First visit, the instruments enclosure is situated a few meters in a met
square on the north of Research center.

**RAINGAUGES**

[MANUAL GAUGE]{.underline}

GAUGE A GAUGE B

Diameter Test Diameter Test

  ------------------------------- ---------------------------------------
  **GAUGE**                       **REPLACEMENT**

  1\. 126.42mm                    1\.

  2\. 126.71mm                    2\.

  Mean: 126.57mm                  Mean:
  ------------------------------- ---------------------------------------

+-------------------------------------+-------------+------------------+
| **Inner can tested for leaks**?     | ## Leaking  | ## Not Leaking   |
|                                     |             |                  |
| Yes                                 |             | x                |
+-------------------------------------+-------------+------------------+
| **Outer can tested for leaks?**     |             | x                |
|                                     |             |                  |
| Yes                                 |             |                  |
+-------------------------------------+-------------+------------------+
| **Funnel tested for leaks?**        |             | x                |
|                                     |             |                  |
| Yes                                 |             |                  |
+-------------------------------------+-------------+------------------+

(For standard 5" gauge tolerances allowed are: mean of any two diameters
+/- 0.010" or +/-0.3mm. For any single diameter +/- 0.020" or +/- 0.5mm)

**Gauge Replaced:** No Replacement Type:
\_no\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**Measuring Glass Condition**: 20mm broken Replaced: no

**Maintenance/Repairs**

Leveling of the plastic gauge was not done but the observers were to
look into the gauge in a way to level it.

## AUTOMATIC RAINGAUGE

  --------------------------- -------------------------------------------
  **Type**                    Casella - London

  **Serial No**               04340

  **General condition**       Not working

  **State of Rim**            Good

  **Is Rim Level?**           Yes

  **Height of rim above       130cm
  ground**                    
  --------------------------- -------------------------------------------

Is gauge calibrated correctly? (Provide details of measured quantities
and attach copy chart used in calibration)

Calibration is not done because the automatic rain gauge is not working.

**Maintenance/Repairs carried out**:

None.

**SCREENS**

  ------------------------- ---------------------------------------------
  **Type**                  standard

  **Condition of Screen**   The screen is old and may need replacement

  **Condition of Stand**    good
  ------------------------- ---------------------------------------------

**Repairs carried out and action taken**:

None.

**THERMOMETERS**

<table style="width:100%;">
<colgroup>
<col style="width: 13%" />
<col style="width: 10%" />
<col style="width: 9%" />
<col style="width: 9%" />
<col style="width: 8%" />
<col style="width: 8%" />
<col style="width: 8%" />
<col style="width: 8%" />
<col style="width: 11%" />
<col style="width: 13%" />
</colgroup>
<tbody>
<tr class="odd">
<td><h2 id="thermometer">Thermometer</h2></td>
<td><strong>Serial No. /Make</strong></td>
<td><strong>Check Therm</strong></td>
<td><p><strong>Station</strong></p>
<p><strong>Therm</strong></p></td>
<td><p><strong>Check</strong></p>
<p><strong>Therm</strong></p></td>
<td><strong>Station Therm</strong></td>
<td><strong>Check Therm</strong></td>
<td><strong>Station Therm</strong></td>
<td><strong>Mean difference</strong></td>
<td><strong>Serial no. of replacement</strong></td>
</tr>
<tr class="even">
<td><strong>Inspector’s Therm</strong></td>
<td>GTH 175 PT</td>
<td>22.8</td>
<td></td>
<td>22.9</td>
<td></td>
<td>23.0</td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td><strong>Maximum</strong></td>
<td>Lambrecht 2793/9</td>
<td></td>
<td>25.0</td>
<td></td>
<td>25.0</td>
<td></td>
<td>25.0</td>
<td>-2.1</td>
<td>No replacement</td>
</tr>
<tr class="even">
<td><strong>Minimum</strong></td>
<td>Lambrecht 5287/04</td>
<td></td>
<td>22.8</td>
<td></td>
<td>22.8</td>
<td></td>
<td>23.0</td>
<td>+0.03</td>
<td>No replacement</td>
</tr>
<tr class="odd">
<td><strong>Dry Bulb</strong></td>
<td>C.W. Price 1607/90</td>
<td></td>
<td>22.8</td>
<td></td>
<td>22.8</td>
<td></td>
<td>23.0</td>
<td>+0.03</td>
<td>No replacement</td>
</tr>
<tr class="even">
<td><strong>Wet Bulb</strong></td>
<td>Lambrecht 5908/74</td>
<td></td>
<td>22.5</td>
<td></td>
<td>22.9</td>
<td></td>
<td>22.9</td>
<td>+0.13</td>
<td>No replacement</td>
</tr>
<tr class="odd">
<td><strong>Grass Minimum</strong></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>

If the inspector's thermometer is a Digitron 3204SR & PRT enter
pre-visit and post visit checks below: Mean Diff.

<table style="width:100%;">
<colgroup>
<col style="width: 16%" />
<col style="width: 9%" />
<col style="width: 10%" />
<col style="width: 9%" />
<col style="width: 7%" />
<col style="width: 9%" />
<col style="width: 9%" />
<col style="width: 9%" />
<col style="width: 6%" />
<col style="width: 9%" />
</colgroup>
<tbody>
<tr class="odd">
<td><strong>Inspector’s thermometer</strong></td>
<td></td>
<td><p>Date</p>
<p><strong>29/09/06</strong></p></td>
<td>Dtron</td>
<td>Insp.</td>
<td><p>Dtron</p>
<p>22.9</p></td>
<td><p>Insp.</p>
<p>23.1</p></td>
<td><p>Dtron</p>
<p>22.95</p></td>
<td><p>Insp.</p>
<p>22.3</p></td>
<td>+0.28</td>
</tr>
<tr class="even">
<td><strong>Inspector’s thermometer</strong></td>
<td></td>
<td><p>Date</p>
<p><strong>16/10/06</strong></p></td>
<td><p>Dtron</p>
<p>24.1</p></td>
<td><p>Insp.</p>
<p>24.1</p></td>
<td><p>Dtron</p>
<p>24.0</p></td>
<td><p>Insp.</p>
<p>24.0</p></td>
<td><p>Dtron</p>
<p>23.9</p></td>
<td><p>Insp.</p>
<p>23.9</p></td>
<td>+-0.0</td>
</tr>
<tr class="odd">
<td colspan="3"><strong>Inspector’s thermometer calibration due
date</strong></td>
<td colspan="4">27/02/07</td>
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>

**Condition of Thermometers, wick and reservoir**:

With the exception of the maximum thermometer which showed a high a
margin of temperature difference from the traveling standard, all other
thermometers are in good working condition. The wet bulb wick and
reservoir are kept clean.

**Condition of Earth Thermometers, Tubes and Plot:**

All earth thermometers are available except the 100cm. The 120cm is
broken and may be replaced.

**Action taken and work carried out**:

None.

**BAROMETERS**

  ----------------------- ----------------------- -----------------------
  **TYPE**                **SERIAL NUMBER**       **CONDITION**

  No Borometer                                    
  ----------------------- ----------------------- -----------------------

**Comparisons made with inspector's Barometer**?

**Correction cards held on Station**?

**Are Correction Cards correct for type of observation prepared by
Station**?

**Action taken**:

**NON AUTOGRAPHIC INSTRUMENTS**

### SUNSHINE RECORDER

Type: Campbell Stokes Serial No. not available

**Condition of Recorder and Mast and any action taken:**

The sunshine recorder is mounted on a steel base 127cm above the ground
and installed in the met square. The instrument is working and out of
obstruction.

### CUP COUNTER ANEMOMETER

**Type:** Cassela **Serial No**. Not available

**Condition of Anemometer and Mast and any action (note results of spin
test):**

This instrument is in good condition.

### WIND VANE

**Type:** This is the Pressure Plate and wind vane **Orientation:**
magnetic north

**Action taken**:

No action was taken.

### EVAPORIMETER

**Type:** Class A evaporation Pan **Height above ground level**: 18cm

**Dipstick Number and Condition of instrument:** A graduated ruler is
being used. Advised to use standard mesh wire to cover the pan.

**Action Taken, give details of measurements of any two random 0.1mm
graduations on dipstick,(use calipers):**

**[CLOUD SEARCHLIGHT]{.underline}:** This instrument is not available.

**Type: Maker &**

**No.**

**Location of instrument:**

**Condition of instrument and any action taken:**

**[Additional instruments:]{.underline}**

Dew collector. This is manufactured in Israel.

**AUTOGRAPHIC INSTRUMENTS**

**[THERMOGRAPH :]{.underline}**

Type: Serial Number:

Condition of instrument and maintenance carried out:

**[HYGROGRAPH]{.underline}**

Type: Serial Number:

Condition of instrument and maintenance carried out:

### THERMOHYGROGRAPH

**Type: Weekly** **Serial Number**:

**Condition of instrument and maintenance carried out:**

One of the pens is broken hence the instrument needs to be replaced.

### 

### BAROGRAPH

**Type:** Weekly **Serial Number**: 3.0812.10.000

**Condition of instrument and maintenance carried out**: The instrument
is in good working condition and is well maintained but the instrument
pressure reading showed a significant difference when compared to the
traveling standard barometer. The instrument was adjusted.

#### **ANEMOGRAPH** 

Type: not available. Serial Number:

Condition of instrument and maintenance carried out:

### SOLAR RADIATION

Sensor Type: not available Serial Number:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Sensor Type:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Serial Number: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Sensor Type:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Serial Number: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Recorder Type:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Serial Number: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Condition of instrument and maintenance carried out:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**[Additional Instruments:]{.underline}**

Automatic Weather Station and Dew collector are available at this
station.

**VISUAL OBSERVATIONS AND GENERAL**

**[Wind direction (check correct use of the Beaufort Scale, bearings
known?)]{.underline}**

A pressure plate is used at this station and Beaufort scale is available
and observers are conversant with it.

**[Visibility (marks known, table on station?)]{.underline}**

The sand dunes lying 35km on the Southern side of the station and a hill
on the Western side about 50km from the station are used as visibility
marks.

**[Cloud amounts, heights and types:]{.underline}** The table is
available

**(Heights of surrounding hills known, is there [a cloud book and cloud
chart on station?)]{.underline}**

A cloud chart is available and heights of nearby hills are
known**[.]{.underline}**

**[Field books 301s and remarks:]{.underline}**

Field books are available and are adequately stalked and observations
are well recorded.

**[Synoptic/Metar Coding(Practical test, comments, action taken. Is more
training required?)]{.underline}**

This is a research station and observers are not employees of Namibian
Meteorological Service.

### Supplies, are there adequate supplies on station?

1 year supply is provided in advance.

[I**nstrument care, management and maintenance: **]{.underline}

Regular maintenance is done three times in a year.

**[Sketch, photograph and horizon profile of site:]{.underline}**

See attachment.

**[Are hydrogen and balloon filling procedures being correctly
followed?]{.underline}**

Not available at the station.

**[Other items and general remarks on impression and ability of
observer(s):]{.underline}**

Observers are mainly students. Three observations are done per day and
send via email to Met Station in Windhoek. In general the station is
well situated and instruments are well maintained

**RECOMMENDATIONS** **ACTION COMPLETED**

  -------------------------------------------- --------------------------
  Pressure Plate to be replaced with a         
  conventional wind system                     

  120 cm soil thermometer to be replaced.      

  Automatic rain gauge to be replaced.         
  -------------------------------------------- --------------------------

**Inspected by: D. F. MOLOTSI and E. MAGAGWA Date: 06/10/2006**