## What is M in precipitation?

All precipitation quantities are expressed in millimetres (mm) of liquid water equivalent for the preceeding time interval (or in inches). One millimetre of rain corresponds to 1 litre per square metre of water on the surface, or approximately 10 millimetres of snow.

## What is ERA-interim?

ERA-Interim is a global atmospheric reanalysis that is available from 1 January 1979 to 31 August 2019. It has been superseded by the ERA5 reanalysis. The data assimilation system used to produce ERA-Interim is based on a 2006 release of the IFS (Cy31r2).

How do you convert kg/m2 to MM?

kg/m2/s is equivalent to mm/s. The best way is to multiply the value by 24*60*60 to get the total rainfall in mm per day. I.e. 86400 x kg/m2/s = daily value (mm). For the monthly value, daily value can be multiplied by the number of days e.g. 86400 x kg/m2/s x number of days in a month.

1. Go to ECMWF Web User Interface for ERA-Interim.
2. Make sure you are logged in with your ECMWF user ID (top right of the page)
3. In the left hand menu select if you want daily or monthly data, and surface, pressure levels or model levels.

### What units is precipitation measured in?

The most common rainfall measurement is the total rainfall depth during a given period, expressed in millimeters (mm). For instance, we might want to know how many millimeters of rain fell over the course of 1 h, 1 day, 1 month, or 1 year.

What are the changes from era-interim to ERA5?

According to the ECMWF, ERA5 improves upon ERA-Interim in various aspects. One of the major improvements of ERA5 is the much higher spatial and temporal resolution. Figure 1 illustrates the improved vertical coverage and sampling of ERA5 compared with ERA-Interim.

#### What unit is kg/m 2?

kg/m2 is unit of pressure, where gsm (gram per sq meter) is a standard unit used in textile or paper industry.

#### How do you convert mm to Kg m?

How to Convert Kilogram/Millimeter to Kilogram/Meter (kg/mm to kg/m) By using our Kilogram/Millimeter to Kilogram/Meter conversion tool, you know that one Kilogram/Millimeter is equivalent to 1000 Kilogram/Meter. Hence, to convert Kilogram/Millimeter to Kilogram/Meter, we just need to multiply the number by 1000.

What is Ecmwf model?

The ECMWF (European Centre for Medium-Range Weather Forecasts) is a European global forecast seamless model. It is widely regarded as the best and most reliable model currently in existence.