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今日无意见看到一幅图

Feb 4th

@一图胜千言 | 184次浏览(views)

0条评论(comment)

[[Image:Other/20070204c.png|500]]

引自 http://alkibiades.freeblog.hu/archives/2006/01/。作者看来是一位艺术家，能画画又会弹琴，只是全是匈牙利文，看不懂...

[#63] GRIB2 decoded succeed, recent progress (中文/EN)

Feb 4th

@学而时习 | 905次浏览(views)

1条评论(comment)

　　各位好。非常高兴地向大家宣布一个十分重要的进展：今天经过反复试验，通过degrib的方法顺利对GRIB2格式的数据进行了解码。这些数据的精度达0.5度（约55公里），比现在7Timer!所用的GRIB1格式的数据精确8倍。附测试图片，2月4日北京时间20时的GFS自带云量输出图，可以对比一下新格式数据的效果。

　　由于degrib对GRIB2的解码仍然不是非常好用，因此短期内新数据还不会正式投入使用。计划继续对7Timer!-ArP进行升级改造，提供更为智能的ArP运行信息。

[[Image:Other/20070204a.png|500|GRIB1 format (1deg.)]]

[[Image:Other/20070204b.png|500|GRIB2 format (0.5deg.)]]

Hi all, glad to announce a good news: the GRIB2 data has been successfully decoded. GRIB2 format raises the resolution to ~55km, which is eight time better than the currently-used GRIB1 format. Test images are shown here.

As the DEGRIB is not quite smoothly working with GrADS, I've no plan to put the GRIB2 data into use in near future. These days I plan to continue on evaluating 7Timer!-ArP.

7Timer! encounted problem

Feb 2nd

@学而时习 | 173次浏览(views)

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The server moved to a new IP address and this led to another headache problem. This address has a very slow speed to GFS data server, and the ArP cannot get the data (error: connect time out). So 7Timer! suspended since Feb.1. I'm contacting the administrator for a solution.

7Timer!恢复/GRIB2进展

Jan 30th

@叶夜速写 | 1,997次浏览(views)

4条评论(comments)

　　恶补了php+shell课程之后，终于依靠自己把7Timer!弄好了，现在又对php+shell大感兴趣，终于觉得linux好处多多！最妙的就是发现php、shell原来和我学的GrADS下的fortran有些相似，学起来就更有底气了。于是决定拿ArP开刀，把lzq的代码优化一下，增添一些有趣的新功能，然后再自己写几个有意思的php小程序。

　　本来打算修好7Timer!之后，就完善一下ArP，然后开始弄CMCN。没想到又给GRIB2缠上了，因为NCEP的GFS新产品，精度竟然达到0.5度，比现在我用的1度的好多了。（虽然只是差了2倍，可在3维空间里就是2^3=8！所以要努力争取啊）

　　可是么，好东西就是难用上。其实高考结束我就发现它了，但就是因为GrADS不支持GRIB2才放手的。今天忙碌了一个下午，哎…… 这个GrADS也真是慢腾腾，用了2年了，还是1.8-s11和1.9-b4两个版本，估计要等到猴年马月才会支持GRIB2。和我们的班主任王老师讨教了一阵，于是现在有2种办法：

grib2ctl+wgrib2尝试。可这个grib2ctl真是很抠门，在linux+perl下才能运行。LASG给的exe转译文件也没法和wgrib2结合起来。wgrib2么？倒也是可以，但是要在linux环境下自己编译和安装。本人太懒，不大想走这条路，于是留下几个网站：
- http://www.cpc.ncep.noaa.gov/products/wesley/wgrib2/ wgrib2的网站，这个家伙真是够有趣
- http://www.cpc.ncep.noaa.gov/products/wesley/grib2ctl.html grib2ctl的网站，和上面的都是一个人开发的
degrib。现在就在尝试，因为看来要可行的多。其实它就是先把GRIB2转成GRIB1然后再处理，但如果真的能弄成，估计要耗掉一大堆系统资源…… lamost估计要给弄垮了说。不管，我先试试看。
- http://www.nws.noaa.gov/mdl/degrib/grads.php
- http://www.weather.gov/mdl/degrib/ 这就是我们要用的degrib。一开始，我第一次有这种感觉：“天啊！怎么是windows的图形界面？难道就没有linux的……”放心，绝对不会亏待你的，找到linux版本了。

　　于是现在事情看起来简单多了。在服务器上安一个degrib，然后就用新学的php+shell调度下载GRIB2的数据然后degrib成GRIB1，再由你宰割吧。哈哈哈哈！不过，其他的task就又要delay了……

7Timer! recovery done

Jan 30th

@学而时习 | 257次浏览(views)

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After fixed several problems, the ArP is now working properly. ArP version now upgrade to 2.1-b4, and 7Timer! version now is 3.2-s2.

I'm now working on these fields:

Try to switch to GRIB2 files, it will raise the resolution from 1 deg to 0.5 deg.
Evaluating ArP, for more funtion.
Develop 7Timer!-Live (temp name), for daily/regular usage.

WordPress升级到2.1s

Jan 30th

@叶夜速写 | 406次浏览(views)

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　　经过3天的停电，Yeiht恢复运行。本站内核Wordpress也升级到最新稳定版2.1s。

7Timer! recovery delay

Jan 30th

@学而时习 | 224次浏览(views)

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Sadly, the ArP (Auto-run Program) encounted a problem again, the processing software, GrADS, was not properly set and led to complex problems. I'm unable to handle it today. Give it another try tomorrow.

7Timer! recovery progress

Jan 25th

@学而时习 | 230次浏览(views)

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Today word for a whole day on the ArP, thankfully I finally locate the problems and have them fixed, after some "php snacks" for a basic knowledge of php coding. GrADS can be started by the shell files.

After around half an hour the Crontab will automatically started the ArP and we can figure how it works after these operations...

7Timer! recovery progress

Jan 24th

@学而时习 | 147次浏览(views)

0条评论(comment)

As the auto-run program (ARP) does not compile with the new server, 7Timer! still doesn't work right so far. Now the downloader can run but it seems GrADS cannot be started by shell file. So ARP is now downloading the latest data but the problem is still not fixed. Please be patient, things should be all right soon.