Meteorology and sea surface temperature (MET) 15 minute averaged data from fourteen R/V Endeavor and R/V Oceanus cruises in the Gulf of Maine and Georges Bank area during 1997 (GB project)
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<h2>Continuous along track meteorology and sea surface data,<br /> 15 minute averaged values, 1997</h2> <pre> <strong>Processed by:</strong> Richard Payne Woods Hole Oceanographic Institution Woods Hole, MA 20543 <a href=\"mailto:rpayne@whoi.edu\">rpayne@whoi.edu</a> Additional <a href=\"http://globec.whoi.edu/globec-dir/data_doc/additional_endeavor_processing_details.html\">data processing notes</a> are available. </pre> <p>The sea surface temperature as measured by the hull sensor is not shown since the sea surface temperature as measured via the engine inlet (field name is temp_ss1) is more accurate.</p> <h3>Processing Notes</h3> <ol> <li>Concatenate daily 1 minute files into one file for whole cruise</li> <li>Edit file for obvious bad data, i.e., missing data, garbage characters, etc.</li> <li>Run program which reformats data. Output parameters:<br /> Year day, lat, long, Speed made good, course made good, gyro 1 & 2, Edo speed, Edo indicator, port wind speed, starboard ws, port wind azimuth, starboard waz, air temp, relative humidity, barometric pressure, sea surface temp @5m & 1m depth, Edo depth, Chirp sonar depth.</li> <li>Put plots of all parameters on screen and look for obvious single bad points. Edit in basic concatenated file. Except I have not edited depths.</li> <li>Iterate steps 2-4 until no more obvious bad points.</li> <li>Run second program which computes true wind speed and direction from speed and course made good, gyros, larger of port or starboard ws and accompanying wind azimuth. Outputs are year day, lat lon, speed and course made good, gyro, relative ws and direction, true ws and direction, air temp, relative humidity, barometric pressure, short- and long-wave radiation,5m and 1m sea surface temps, Edo depth, Chirp sonar depth, Edo speed, Edo indicator.</li> <li>Check plots of true wind speed and direction to make sure they look ok.</li> <li>Run vector averaging program which produces 60 minute series. The program uses 60 consecutive records and does not check for missing records. I have not carried depths since hourly averages do not seem useful nor Edo speeds since they seem pretty generally useless. Output parameters are: Year day, lat, long, true wind speed and direction, air temp, relative humidity, barometric pressure, short- and long-wave radiation, sea surface temp @ 5m & 1m.</li> </ol> <p>The data quality is generally pretty poor on the Oceanus cruises. OC297 and OC298 have no SOG, COG, or gyro so I could not correct the winds. I almost set the TWS, TWD to 0 but decided to leave them in as RWS, RWD. One could get a semiqualitative feel for the winds. OC301 had gyro but no SOG, COG so I computed them from the GPS position differences. It came out better than I expected. Warn users to be skeptical about the Oceanus data.</p> <p><em>From: Richard E. Payne / 11 Apr 1997 09:05:25 -0400<br /> Updated: April 29, 2004; G.Heimerdinger </em></p>
<h2>沿航迹连续采集的气象与海面数据，1997年，15分钟均值数据集</h2> <pre> <strong>处理者：</strong> 理查德·佩恩（Richard Payne） 伍兹霍尔海洋研究所（Woods Hole Oceanographic Institution） 美国马萨诸塞州伍兹霍尔，邮编20543 <a href="mailto:rpayne@whoi.edu">rpayne@whoi.edu</a> 可查阅<a href="http://globec.whoi.edu/globec-dir/data_doc/additional_endeavor_processing_details.html">额外数据处理说明</a>。 </pre> <p>船体传感器采集的海面温度未纳入本数据集，因通过发动机进气口测量的海面温度（字段名为temp_ss1）精度更高。</p> <h3>处理说明</h3> <ol> <li>将每日1分钟分辨率的文件拼接为整个航次的单文件</li> <li>对文件中明显的异常数据（如缺失值、乱码等）进行编辑修正</li> <li>运行数据格式化程序，输出参数包括：年积日、纬度、经度、对地航速（Speed Made Good）、对地航向（Course Made Good）、陀螺仪1与2数据、Edo测速数据、Edo状态指示器、左舷风速、右舷风速、左舷风向方位角、右舷风向方位角、气温、相对湿度、大气压力、5米与1米水深处海面温度、Edo测深数据、Chirp声呐测深数据</li> <li>将所有参数绘制成可视化图表，筛查单个异常点，并在基础拼接文件中进行修正，本次未对水深数据进行编辑</li> <li>重复步骤2至4，直至无明显异常点残留</li> <li>运行第二套程序，基于对地航速、对地航向、陀螺仪数据、左右舷风速的较大值及对应风向方位角计算真实风速（True Wind Speed, TWS）与真实风向（True Wind Direction, TWD）。输出参数包括：年积日、纬度、经度、对地航速与航向、陀螺仪数据、相对风速（Relative Wind Speed, RWS）与相对风向（Relative Wind Direction, RWD）、真实风速与风向、气温、相对湿度、大气压力、短波与长波辐射、5米与1米水深海面温度、Edo测深数据、Chirp声呐测深数据、Edo测速数据、Edo状态指示器</li> <li>对真实风速与风向的可视化图表进行校验，确保结果合理</li> <li>运行矢量平均程序生成60分钟序列数据。该程序会对连续60条记录进行平均，且未对缺失记录进行校验。我未保留水深数据，因小时均值的水深数据实用性较低；同样未保留Edo测速数据，因其整体可用性较差。输出参数包括：年积日、纬度、经度、真实风速与风向、气温、相对湿度、大气压力、短波与长波辐射、5米与1米水深海面温度</li> </ol> <p>海洋研究船Oceanus的航次数据整体质量较差。OC297与OC298航次未提供对地航速（Speed Over Ground, SOG）、对地航向（Course Over Ground, COG）及陀螺仪数据，因此无法对风向风速进行校正。我曾考虑将真实风速与真实风向设为0，但最终决定保留为相对风速与相对风向，使用者可据此对风力状况获得半定性的参考。OC301航次提供了陀螺仪数据，但未提供SOG与COG，因此我通过GPS位置差计算得到这两项参数，结果优于预期。请使用者对Oceanus航次的数据保持审慎态度。</p> <p><em>来源：理查德·E·佩恩（Richard E. Payne） / 1997年4月11日 09:05:25 -0400<br />更新：2004年4月29日；G·海默丁格（G.Heimerdinger）</em></p>
