Questions tagged [measurements]

Questions related to acquiring, processing and interpreting field measurements of any kind. Including instrumentation and data analysis.

19 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
9
votes
0answers
85 views

What field studies have developed or supported the Penman-Monteith equations for estimating evapotranspiration?

I'm trying to understand transpiration estimation methods. The FAO recommends a standard Penman-Monteith methodology for modeling evapotranspiration based on meteorological and vegetation parameters (...
6
votes
0answers
70 views

High-resolution laterolog array tool

Does anybody know if it is necessary to apply corrections to the reading given by this logging tool? Corrections such as bed thickness, borehole diameter, invasion, etc.? If so, is there anywhere I ...
5
votes
0answers
204 views

Was the "'Bama Boom" even recorded by infrasound or by seismic detectors?

The 'Bama Boom ('Bama is short for the US state of Alabama) is a term for some audible "booms" heard by many people in Alabama and now in Colorado. See for example the Popular Mechanics article ...
5
votes
0answers
149 views

How are global cloud cover estimates generated and how is the data accessed?

The website ventusky.com offers three models to produce cloud estimate: ICON, GFS and GEM. They extract a fractional cloud number, shown in percentage. From the ERDDAP portal to the GFS model (...
4
votes
0answers
111 views

How temperature anomaly are measured

Temperature Anomaly is the measure used to show that the earth is warming. The formula for temperature anomaly involves in the subtraction of average temperature measurement over 30 years considered ...
3
votes
0answers
34 views

Where to find meteorological data from road stations?

I am involved on a project that aims to analyze data from road weather stations, like the ones you can see from a German site here: https://www.dwd.de/EN/ourservices/bufr_extensions_national/...
3
votes
0answers
64 views

Is there a sort of "global natural disaster" index?

Is there what could be called a "global disaster index", i.e., a measure of the number, weighted by their intensities, of all the world's natural disasters at given moments in time throughout history?
3
votes
0answers
427 views

Trewartha climate classification overlap?

By my reading of the wikipedia page on the Trewartha climate classification, climate classifications are not mutually exclusive. Let's take a look at the climate classification of Iowa City, IA. The ...
3
votes
0answers
70 views

Capillary rise experiment and obtainable information about the porous medium

I have access to rock core(s) and vacuum saturation chambers as seen in the image below. I can dry the rock core using an oven, measure its geometry and mass. I can place it into the vacuum ...
3
votes
0answers
143 views

Desert greening - Do we have long term (several decades) data on precipitation around the Sahara?

This article of desert greening states that some areas around the Sahara have seen increased plant growth in recent decades, caused by global warming. The causal chain would be warmer air can hold ...
3
votes
0answers
44 views

Conversion factor between different Landsats?

I have collected data (spectral bands) from Landsat 4-5 and Landsat 8. I was calculating NDVI when I noticed that the two Landsats have different band numbers designated as Red and Near Infra Red (...
2
votes
0answers
33 views

How to interpret land use measures in environmental impact papers?

In reading some papers about the environmental impact of agricultural products such as crops and animal rearing, I am puzzled by the way land use is reported. I understand that inputs such as energy, ...
2
votes
0answers
39 views

Books / resources on measurement methods in atmospheric sciences

I have found this very long book from weather.gov (free access) Guide to Meteorological Instruments and Methods of Observation which might be a bit too in-depth for what I'm looking for, so I was ...
2
votes
0answers
70 views

How is tiltmeter data processed?

With what programs can inclinometer data be processed? And how is instrumental correction done?
2
votes
0answers
1k views

Drawing strike lines when given strike and dip

Map 1 shows a hillside with topographic contours at 50 m intervals. At Locality A a coal seam is exposed at the surface. The strike and dip of the seam is as indicated on the map. Use this information ...
2
votes
0answers
55 views

Determining '< x' values as numeric

I do have a large dataset containing nearly a decade of particulate matter measurements. At the lower precision limit of the measuring instrument, there are values given like ...
2
votes
0answers
24 views

Does the level/reading/measurement of solar exposure impact temperatures

Does the level/reading/measurement of solar exposure impact temperatures? What I mean by this is, does a higher level/reading/measurement of solar exposure of a place cause/create higher temperatures, ...
1
vote
0answers
17 views

How to efficiently estimate merchentable volume for timber inventory using species, DBH, and merchentable heights?

I am trying to estimate wood volume for forest stands I have field-inventoried using a variable plot sample method, measuring species, DBH, and height of each tree counted 'in' using a BAF-10 prism. ...
1
vote
0answers
32 views

How would I compare (CO$_2$-eq) kg$^{−1}$ with metric tons?

I'm doing a project and looking at one of my scholarly resources, it says that The carbon footprint per kilogram protein of plant-based substitutes was found in the range of 6–17 carbon dioxide ...