接受检索的字段数少于MARS Web API中请求的字段数？

Question

我试图从2018年的ECMWF MARS Web API下载提前25天的预测。这些预测（WAEF控制预测）仅在星期一和星期四发布，在这里我遇到了使用以下方法获取数据的问题MARS Web API。

我尝试请求直观的2018-01-01/to/2018-12-31，但由于每周有5天没有任何要检索的字段，因此请求失败。

我的MARS请求文件如下：

retrieve,
class=od,
date=2018-01-01/to/2018-12-31,
expver=1,
param=229.140/245.140,
step=600/624/648/672,
stream=waef,
time=00:00:00,
type=cf,
target="output.grib"

这导致以下响应：

...
mars - INFO   - 20190215.100826 - Welcome to MARS
mars - INFO   - 20190215.100826 - MARS Client build stamp: 20190130224336
mars - INFO   - 20190215.100826 - MARS Client version: 6.23.3
mars - INFO   - 20190215.100826 - MIR version: 1.1.2
mars - INFO   - 20190215.100826 - Using ecCodes version 2.10.1
mars - INFO   - 20190215.100826 - Using odb_api version: 0.15.9 (file format version: 0.5)
mars - INFO   - 20190215.100826 - Maximum retrieval size is 30.00 G
retrieve,target="output.grib",stream=waef,param=229.140/245.140,padding=0,step=600/624/648/672,expver=1,time=00:00:00,date=2018-01-01/to/2018-12-31,type=cf,class=odmars - WARN   - 20190215.100826 - For wave data, LEVTYPE forced to Surface
mars - INFO   - 20190215.100826 - Automatic split by date is on
mars - INFO   - 20190215.100826 - Request has been split into 12 monthly retrievals

mars - INFO   - 20190215.100826 - Processing request 1

RETRIEVE,
    CLASS      = OD,
    TYPE       = CF,
    STREAM     = WAEF,
    EXPVER     = 0001,
    REPRES     = SH,
    LEVTYPE    = SFC,
    PARAM      = 229.140/245.140,
    TIME       = 0000,
    STEP       = 600/624/648/672,
    DOMAIN     = G,
    TARGET     = "output.grib",
    PADDING    = 0,
    DATE       = 20180101/20180102/20180103/20180104/20180105/20180106/20180107/20180108/20180109/20180110/20180111/20180112/20180113/20180114/20180115/20180116/20180117/20180118/20180119/20180120/20180121/20180122/20180123/20180124/20180125/20180126/20180127/20180128/20180129/20180130/20180131

mars - INFO   - 20190215.100826 - Web API request id: xxx
mars - INFO   - 20190215.100826 - Requesting 248 fields
mars - INFO   - 20190215.100826 - Calling mars on 'marsod', callback on 36551
mars - INFO   - 20190215.100827 - Server task is 228 [marsod]
mars - INFO   - 20190215.100827 - Request cost: 72 fields, 17.2754 Mbytes on 1 tape, nodes: hpss [marsod]
2019-02-15 11:08:59 Request is active
mars - INFO   - 20190215.102300 - Transfering 18114554 bytes
mars - WARN   - 20190215.102301 - Visiting database marsod : expected 248, got 72
mars - ERROR  - 20190215.102301 - Expected 248, got 72.
mars - ERROR  - 20190215.102301 - Request failed
...

有没有办法允许接收比请求更少的字段或任何其他优雅的解决方案来解决这个问题，除了只请求星期一和星期四的正确日期？

Answer 1

毕竟我设法在MARS文档中找到了答案。在控制部分使用expect = any解决了这个问题。更多信息可以在这里找到：https://confluence.ecmwf.int/pages/viewpage.action?pageId=43521134

retrieve,
class=od,
date=2018-01-01/to/2018-12-31,
expver=1,
param=229.140/245.140,
step=600/624/648/672,
stream=waef,
time=00:00:00,
type=cf,
expect=any,
target="output.grib"