Gas transfer velocities (QuikSCAT normalized radar backscatter) from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)

<p>SO-GasEx Gas transfer velocities (QuikSCAT normalized radar backscatter)</p>
<p>Gas transfer velocities (normalized to Sc=660) derived from QuikSCAT normalized radar backscatter (QSk1p4p1 data set)</p>
<p>Each day's worth of data has (as columns):<br />
date, time, lon, lat, u, v, k, num_k, k46, num_k46, k54, num_k54, kLM, kW, kWM, kN<br />
<br />
u and v are the east-west and north-south U10 wind velocities for that time and location.<br />
k is the Glover radar-based estimate for transfer velocity.<br />
num_* refers to the number of individual QuikSCAT radar returns used.<br />
46 and 54 refer to the inner and outer dual, conically scanning radar pencil beams.<br />
<br />
kLM, kW, kWM, and kN refer to transfer velocities derived from QuikSCAT wind speeds [sqrt(u2+v2)]<br />
using Liss-Merlivat'86, Wanninkhof'92, Wanninkhof and McGillis'99, and Nightingale'00 respectively.<br />
<br />
The data are spatially distributed in Wind Vector Cells (WVC) of roughly 25 km2.<br />
There are 4 to 6 views of at least part of the SO GasEx area each day<br />
<br />
For these data, the area is defined as 30-50&deg; W, 40-60&deg; S.<br />
Potentially, there are 6400 data points per time/date data set.<br />
<br />
The times are given in UTC.</p>

SO-GasEx 气体传输速率（QuikSCAT归一化雷达后向散射）
基于QuikSCAT归一化雷达后向散射（QSk1p4p1数据集）推导得到的、归一化至施密特数（Schmidt Number, Sc）660的气体传输速率
单日数据集包含如下列字段：日期、时间、经度（lon）、纬度（lat）、u、v、k、num_k、k46、num_k46、k54、num_k54、kLM、kW、kWM、kN

u与v分别为对应时刻及位置下的东西向与南北向U10海面10米高度风速分量。
k为基于雷达的Glover法气体传输速率估算值。
带num_*前缀的字段代表所用的单次QuikSCAT雷达回波数量。
46与54分别代表锥形扫描雷达的内、外双笔形波束。

kLM、kW、kWM与kN分别为基于QuikSCAT风速（即u²与v²之和的平方根），通过Liss-Merlivat'86、Wanninkhof'92、Wanninkhof与McGillis'99以及Nightingale'00四种模型推导得到的气体传输速率。

该数据集以约25平方千米的风矢量单元（Wind Vector Cells, WVC）进行空间分布。
每日至少可获取SO-GasEx研究区域内4至6组观测数据。

本数据集对应的研究区域范围为西经30°至50°、南纬40°至60°。
单时间/日期数据集理论上可包含6400个数据点。

所有时间均采用协调世界时（UTC）。