GIS:如何阅读METAR& TAF值可获取海平面压力? [英] GIS: How to read METAR & TAF values to get the pressure at sea level?

问题描述

我有此链接，了解如何在Android中获取高度->

I have this link on how to get the altitude in Android -> SensorManager.getAltitude(pressure at sea level, atmospheric pressure)

但是...需要了解海平面压力"的值.我已从Android文档中阅读了以下声明，以了解如何获取它.

But... need to know the value for PRESSURE AT SEA LEVEL. I have read the below statement from Android documentation on how to obtain it.

必须知道海平面的压力，通常可以将其取回 从附近的机场数据库中获取.

The pressure at sea level must be known, usually it can be retrieved from airport databases in the vicinity.

然后，我发现可以通过提供机场代码来提供值的网址.就我而言，它是东京国际机场(羽田).机场代码为 HND .

Then, I found url that may give the values by providing the airport code. In my case, it's Tokyo International Airport (Haneda). The airport code is HND.

这是Web服务提供商的URL: http://avdata.geekpilot.net/

Here's the web service provider url: http://avdata.geekpilot.net/

以下是东京国际机场的示例输出( http://avdata.geekpilot.net/weather/HND )

Here's the sample output for Tokyo International Airport (http://avdata.geekpilot.net/weather/HND)

<weather>
<ident>RJTT</ident>
<error/>
<metar>
2011/09/22 08:00
RJTT 220800Z 04019KT 9999 -SHRA FEW012 BKN025 BKN040 21/18 Q1000 NOSIG
</metar>
<taf>
2011/09/22 04:12
TAF 
      AMD TAF 
      AMD RJTT 220409Z 2204/2306 08016KT 9999 FEW030 SCT050 
      BECMG 2204/2206 05014KT 
      TEMPO 2207/2209 36018G30KT SHRA 
      BECMG 2303/2306 10008KT
</taf>
</weather>

问题:不知道如何读取以上信息来获取值.

Problem: don't know on how to read the above information to obtain the value.

推荐答案

我发现要翻译的网址获取了它并将其翻译成可读格式.

I found url to translate obtain it and translate it to readable format.

找到当地海平面压力

我的机场代码是RJTT(东京羽田国际机场)

My airport code there is RJTT (Tokyo International Airport Haneda)

这是示例输出(压力(高度计):30.21英寸汞柱(1023.0 mb)):

METAR text:      RJTT 260100Z 03011KT 9999 FEW025 BKN110 BKN170 20/14 Q1023 NOSIG RMK 1CU025 6AC110 7AC170 A3021
Conditions at:  RJTT (TOKYO INTL AIRPO, JP) observed 0100 UTC 26 September 2011
Temperature:    20.0°C (68°F)
Dewpoint:   14.0°C (57°F) [RH = 68%]
Pressure (altimeter):   30.21 inches Hg (1023.0 mb)
Winds:  from the NNE (30 degrees) at 13 MPH (11 knots; 5.7 m/s)
Visibility:     6 or more miles (10+ km)
Ceiling:    11000 feet AGL
Clouds:     few clouds at 2500 feet AGL
broken clouds at 11000 feet AGL
broken clouds at 17000 feet AGL
Weather:    no significant weather observed at this time 

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