NAD meaning in Earth Science ?

Answer: What is North American Datum mean?

The North American Datum (NAD) is the horizontal datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the Earth along with an "anchor" point for the coordinate system. In surveying, cartography, and land-use planning, two North American Datums are in use for making lateral or "horizontal" measurements: the North American Datum of 1927 (NAD 27) and the North American Datum of 1983 (NAD 83). Both are geodetic reference systems based on slightly different assumptions and measurements.

Vertical measurements, based on distances above or below Mean High Water (MHW), are calculated using the North American Vertical Datum of 1988 (NAVD 88).

NAD 83, along with NAVD 88, is set to be replaced with a new GPS- and gravimetric geoid model-based geometric reference frame and geopotential datum in 2022.

reference

Full Form	Category
Network Addresing Domain	Academic & Science
Network Addressing Domain	Academic & Science
Macanal	Airport Code
Nuveen Dividend Advantage Municipal Fund	Business
National Animated And Design	Business
National Advertising Division	Business
North American Division	Business
Namakwa Di.	Business
North Australian Diamonds, LTD.	Business
National Associations the Deaf	Community
National Association for the Deaf	Community
New Acoustic Dimension	Community
National Association of the Deaf	Community
Noise Adding Device	Computer Hardware
Not Adapt	Computing
Network Adapter Disk	Computing
Network Access Disk	Computing
Network Attached Disk	Computing
Namibian Dollar	Country Currency
Name and Address Data	Database Management
North American Datum	Earth Science
Note Amplitude Data	Electronics
Ned Atomic Dustbin	General
Nicotinamide Adenin Dinucleotide	General
Network Access Device	General
No Audio Derivates	General
Nikotinamid Adenin Dinukleotid	General
National Associate of the Deaf	General
Nicotinamide Adenine Dinucleotid	General
North American Design	General
Nodo Additiviazione	General
National Alfa Day	General
National Aborigines’ Day	General
Not Actually Done	General
National Aboriginal Day (Canada, June 21st)	General
National Appeals Division	General
North America Datum	General
No Asbestos Detected	General
NACTA Agent Digest	General
No Apparent Distress	General
Node Addon Developer	General
Naval Ammunition Depot	Governmental
Naturally Aspirated Diesel	Governmental
Name and Address Details	Governmental
Naturally Aspirated Deisel	Governmental
NED Animal Drug number	Governmental
NAGDA JN	Indian Railway Station
Nangroe Aceh Darussalam	International
Not At Desk	Internet
Next Available Date	Internet
Next Action Deterministic	Maths
No Acute Disease	Medical
Non-Animal Derived	Medical
Non Adherent Dressing	Medical
No Abnormality Detected	Medical
No Active Disease	Medical
No Acute Distress	Medical
Nothing Abnormal Detected	Medical
Nicotinamide Adenine Dinucleotide	Medical
Nicotinamide Adenosine Dinucleotide	Medical
No Appreciable Disorders	Medical
Not Actually Diagnosed	Medical
Non Accidental Death	Medical
Naval Armament Depot	Military and Defence
Network Address Directory	Networking
Network Attached Device	Networking
Nihilistic Animation Data	Physics Related
Macanal, Colombia	Regional
Nagda Junction	Transport & Travel